bluuebunny/crossref_metadata_2025 huggingface dataset:
Radio/X-Ray Correlation in the Mini-outbursts of Black Hole X-Ray Transient GRS 1739–278
Authors: Xie Fu-Guo , Yan Zhen , Wu Zhongzu
Published: March 2020

We present quasi-simultaneous radio and X-ray observations of the black hole X-ray binary GRS 1739–278 during the 2015–2016 mini-outbursts, i.e., between 2015 June 10 and 2016 October 31, with the X-ray-to-radio time interval being less than one day. The monitor campaign was run by Swift in the X-rays and by VLA in the radio (at both 5 and 8 GHz). We find that the brightest radio emission is actually achieved during the soft sate, and the spectrum is marginally optically thick with the spectral index α ≈ −0.28 ± 0.17 (flux F

ν
 ∝ ν

α
). For the radio emission in the hard state, we find a large diversity in the spectral index, i.e., a majority of radio spectra are optically thick with −0.5 ≲ α ≲ 0.5, while a few are optically thin, with α being lower than −1 in certain cases. We then investigate the correlation between the luminosities in radio (monochromatic at 5 GHz,

) and 1–10 keV X-rays (

) during the hard state. We find that for more than two orders of magnitude variation in the X-ray luminosity, this source exhibits a flat correlation with p ≈ 0.16 (in the form of

), i.e., it belongs to the “outlier” (to the standard correlation with p ≈ 0.6) category that may follow a hybrid correlation. Both the slope and the corresponding luminosity range agree well with those in H1743–322, the prototype of the hybrid correlation. Theoretical implications of our results are discussed.
On the Chemical and Kinematic Consistency between N-rich Metal-poor Field Stars and Enriched Populations in Globular Clusters
Authors: Tang Baitian , Fernández-Trincado J. G. , Liu Chao , Yu Jincheng , Yan Hongliang , Gao Qi , Shi Jianrong , Geisler Douglas
Published: March 2020

Interesting chemically peculiar field stars may reflect their stellar evolution history and their possible origin in a different environment from where they are found now; this is one of the most important research fields in Galactic archeology. To explore this further, we have used the CN–CH bands around 4000 Å to identify N-rich metal-poor field stars in LAMOST DR3. Here we expand our N-rich, metal-poor field star sample to ∼100 stars in LAMOST DR5, where 53 of them are newly found in this work. We investigate light elements of common stars between our sample and APOGEE DR14. While Mg, Al, and Si abundances generally agree with the hypothesis that N-rich metal-poor field stars come from enriched populations in globular clusters, it is still inconclusive for C, N, and O. After integrating the orbits of our N-rich field stars and a control sample of normal metal-poor field stars, we find that N-rich field stars have different orbital parameter distributions compared to the control sample—specifically, apocentric distances, maximum vertical amplitude (Z
max), orbital energy, and z-direction angular momentum (Lz
). The orbital parameters of N-rich field stars indicate that most of them are inner-halo stars. The kinematics of N-rich field stars support their possible GC origin. The spatial and velocity distributions of our bona fide N-rich field star sample are important observational evidence to constrain simulations of the origin of these interesting objects.
Resolution Study for Three-dimensional Supernova Simulations with the Prometheus-Vertex Code
Authors: Melson Tobias , Kresse Daniel , Janka Hans-Thomas
Published: March 2020

We present a carefully designed, systematic study of the angular resolution dependence of simulations with the Prometheus-Vertex neutrino-hydrodynamics code. Employing a simplified neutrino heating–cooling scheme in the Prometheus hydrodynamics module allows us to sample the angular resolution between 4° and 0.°5. With a newly implemented static mesh refinement (SMR) technique on the Yin-Yang grid, the angular coordinates can be refined in concentric shells, compensating for the diverging structure of the spherical grid. In contrast to previous studies with Prometheus and other codes, we find that higher angular resolution and therefore lower numerical viscosity provides more favorable explosion conditions and faster shock expansion. We discuss the possible reasons for the discrepant results. The overall dynamics seem to converge at a resolution of about 1°. Applying the SMR setup to marginally exploding progenitors is disadvantageous for the shock expansion, however, because the kinetic energy of downflows is dissipated to internal energy at resolution interfaces, leading to a loss of turbulent pressure support and a steeper temperature gradient. We also present a way to estimate the numerical viscosity on grounds of the measured turbulent kinetic energy spectrum, leading to smaller values that are better compatible with the flow behavior witnessed in our simulations than results following calculations in previous literature. Interestingly, the numerical Reynolds numbers in the turbulent, neutrino-heated postshock layer (some 10 to several hundred) are in the ballpark of expected neutrino drag effects on the relevant length scales. We provide a formal derivation and quantitative assessment of the neutrino drag terms in an appendix.
Pinguicula rosmarieae Casper, Bussmann & T.Henning (Lentibulariaceae), a new butterwort from the Amotape-Huancabamba Zone (northern Peru)
Authors: Casper S. Jost , Bussmann Rainer W. , Henning Tilo
Published: March 2020

The insectivorous genusPinguiculaoccurs along the whole Andean mountain chain from Colombia-Venezuela in the north to Tierra del Fuego in the south with a short interruption in the Peruvian-Chilean desert range. This paper describes a new and striking species ofPinguiculathat occurs in the south-eastern part of the Amotape-Huancabamba Zone in north Peru. It grows either as a lithophyte on moist rocks or as an epiphyte onPolylepis multijugaPilg. in the wet highlands of the Cordillera Central.Pinguicula rosmarieaeCasper, Bussmann & T.Henning,sp. nov.is clearly distinguished by a basal rosette of ovate-obovate leaves spread out flat on the ground and especially by a two-partite corolla with a straight uniform tube-spur complex, two features unknown from other AndeanPinguiculaspecies. The morphological similarity toP. calyptrataKunth is discussed and the habitat and distribution ofP. rosmarieaeare characterised.
Checklist of hover flies (Diptera, Syrphidae) of the Republic of Georgia
Authors: Mengual Ximo , Bot Sander , Chkhartishvili Tinatin , Reimann André , Thormann Jana , von der Mark Laura
Published: March 2020

A checklist of the Syrphidae species of the Republic of Georgia is presented. New hover fly (Diptera: Syrphidae) records from Georgia are provided as a result of field work conducted in 2018. At the same time, published syrphid records for the country are here reviewed and updated. A total of 357 species of hoverflies are now documented from Georgia, 40 of which are reported for the first time. Moreover, DNA barcodes were sequenced for 238 specimens, representing 74 species from this country.
Current State and Influencing Factors of Nurse Resilience and Perceived Job-Related Stressors
Authors: Leng Min , Xiu Hong , Yu Peng , Feng Juan , Wei Yuling , Cui Yanuan , Zhang Mingming , Zhou Yun , Wei Holly
Published: March 2020

Background:

Resilience is a characteristic and skill that nurses can learn. This study examined the current state and influencing factors of nurse resilience and nurse perceived job-related stressors.

Method:

This cross-sectional survey study was conducted at a university-affiliated hospital in China between May and August 2018. The Connor-Davidson Resilience Scale was used to measure nurse resilience.

Results:

A total of 2,981 nurses participated in the study, with an average resilience score of 61.35 ± 13.12. Nurse resilience was significantly correlated with age, years of employment, clinical rank, and education (
p
< .05). Main job-related stressors included frequent inspections and examinations, heavy workload, mandatory overtime, and low wages.

Conclusion:

The participants had resilience scores that were lower than in the general public in the United States and China, as well as in nurses in developed countries. This study indicated a need for hospital leaders to find ways to reduce nurse work-related stress. Building nurse resilience should be an important focus for leaders.

[
J Contin Educ Nurs
. 2020;51(3):132–137.]
Geophysical measurements for site effects characterisation in the urban area of Girona, Spain
Authors: Macau Albert , Benjumea Beatriz , Gabàs Anna , Bellmunt Fabian , Figueras Sara
Published: March 2020

Amplitude level, duration, and spectral content of earthquake ground motions are strongly influenced by local soil conditions. Reliable estimation of site effects is, therefore, crucial in order to avoid damage to infrastructures and mitigate other losses. Traditional geophysical exploration techniques are restricted in urban environments due to the presence of anthropogenic noises causing low seismic signal‐to‐noise ratio and other logistical issues. These problems are even more critical when the maximum investigation depth extends to hundreds of metres.

The city of Girona, located in northeastern Spain, has seismic hazard represented by a peak ground acceleration value of 0.08 g for a return period of 500 years. The city was built at the confluence of four rivers, generating a complex surface geology with bedrock outcrops and the presence of stiff soils, soft soils, and also a volcanic basalt layer. This paper presents the results of the geophysical work, which was carried out in order to characterise the soil layers present in the urban area of Girona. All information obtained in this research will be useful in computing the amplification of ground motion and to perform microzonation studies. We have obtained the shear‐wave velocity profile in the study area using a combination of seismic noise array and multichannel analysis of surface waves techniques. Using the horizontal‐to‐vertical spectral ratio method, we have obtained the soil fundamental frequency. The combination of shear‐wave velocity and values of soil fundamental frequency provides a complete map of the bedrock topography. The expected velocity inversion due to the presence of shallow basalt flow has been targeted. Electrical resistivity tomography is found to be suitable to define the volcanic basalt thickness. This thickness value is used to constrain the inversion of surface wave dispersion curves and reduce shear‐wave velocity uncertainty. The new methodology overcomes the limitations that are typical to urban conditions and other geological complexities.
Site characterisation in Barreiro urban area (Portugal) using H/V and ReMi techniques
Authors: Vicêncio Henrique , Teves‐Costa Paula , Sá Caetano Paulo
Published: March 2020

Barreiro is an urban county located in the Lisbon metropolitan area (Portugal) with several hazardous industrial facilities. This area shows a moderate seismicity, but due to its geotectonic location, it has been subject in the past to earthquakes responsible for high social and economic losses. Earthquakes that occurred in 1531 (Mw ≈ 6.6), 1755 (M ≥ 8) and 1909 (Mw ≈ 6) are examples of destructive events that hit Barreiro. In this study, we present an analysis of ambient vibration measurements together with local geology and geotechnical properties of the shallower units. Horizontal‐to‐vertical spectral ratio (H/V) computed from ambient vibrations, shear wave velocity profiles, and value distributions were compared with the geological and geotechnical properties of the shallower units, looking for potential site effects.

Geotechnical characterisation was based on the analysis of 289 logs and 1109 Standard Penetration Tests. A total of 214 refraction microtremor measurements were performed, obtaining profiles and values for 34 different sites. The results from ambient vibration records carried out at 136 sites (Vicêncio, Teves‐Costa and Sá Caetano ) were also used. Spatial distributions of profiles, values, the thickness of the shallow formations, the number of blows from Standard Penetration Tests (NSPT values), and H/V peak frequencies are presented and discussed. Correlations between these parameters were established. Three areas prone to seismic amplification, for frequencies between 2.5 Hz to 8 Hz, were identified. Ground classification was performed according to Eurocode 8 using the estimated values. The results will be made available to the Barreiro municipality for support of land and emergency planning.
Underwater ERT surveying in water with resistivity layering with example of application to site investigation for a rock tunnel in central Stockholm
Authors: Dahlin Torleif , Heng Loke Meng
Published: March 2020

We present an approach to underwater electrical resistivity tomography surveying under conditions with several water layers with different resistivity in the water above the electrode layout. The approach is verified against a synthetic model example and tested in full scale on data from a field survey. The field survey was carried out in central Stockholm as part of pre‐investigations for a new metro train (T‐bana) tunnel planned to pass under seawater. The water passage is associated with major tectonic zones that can potentially be very difficult from a tunnel construction point of view. The aim was to identify variations in depth of the bottom sediments and variations in rock quality including the possible presence of weak zones in the rock. Survey conditions are complicated by boat traffic and electrical disturbances from the power grid and train traffic. The water depth was mapped using sonar combined with recording pressure transducers, and water resistivity as a function of water depth was recorded using geophysical borehole logging equipment. Water resistivity as a function of depth was integrated in the inversion model. The results show that the rather difficult survey conditions could be handled in a satisfactory way thanks to adequate equipment, careful planning, and attention to details. The measured data contain information that is relevant for creating coherent models of the variation in depth to rock, which corresponds well with data from drilling. The results also indicate that information in variation in rock quality that can be of critical importance for planning of underground construction can be derived from the data.
Seismic interferometry facilitating the imaging of shallow shear‐wave reflections hidden beneath surface waves
Authors: Liu Jianhuan , Draganov Deyan , Ghose Ranajit
Published: March 2020

High‐resolution reflection seismics is a powerful tool that can provide the required resolution for subsurface imaging and monitoring in urban settings. Shallow seismic reflection data acquired in soil‐covered sites are often contaminated by source‐coherent surface waves and other linear moveout noises (LMON) that might be caused by, e.g., anthropogenic sources or harmonic distortion in vibroseis data. In the case of shear‐wave seismic reflection data, such noises are particularly problematic as they overlap the useful shallow reflections. We have developed new schemes for suppressing such surface‐wave noise and LMON while still preserving shallow reflections, which are of great interest to high‐resolution near‐surface imaging. We do this by making use of two techniques. First, we make use of seismic interferometry to retrieve predominantly source‐coherent surface waves and LMON. We then adaptively subtract these dominant source‐coherent surface waves and LMON from the seismic data in a separate step. We illustrate our proposed method using synthetic and field data. We compare results from our method with results from frequency–wave‐number (f‐k) filtering. Using synthetic data, we show that our schemes are robust in separating shallow reflections from source‐coherent surface waves and LMON even when they share very similar velocity and frequency contents, whereas f‐k filtering might cause undesirable artefacts. Using a field shear‐wave reflection dataset characterised by overwhelming LMON, we show that the reflectors at a very shallow depth can be imaged because of significant suppression of the LMON due to the application of the scheme that we have developed.
Value Creation, Value Capturing, and Management Challenges in Innovation Ecosystems
Authors: Yaghmaie Pegah , Vanhaverbeke Wim , Roijakkers Nadine
Published: March 2020

This study explores how organizations in innovation ecosystems co-create and capture value and what types of challenges they face in creating and capturing value. Based on a multiple case study, the authors show that organizations in nano-electronics establish innovation ecosystems to access not only knowledge and technology, but also other complementary assets. The analysis of various value creation and capturing mechanisms enables the authors to generate a framework to illustrate the potential challenges and required management activities in developing innovation ecosystems. Finally, the authors offer some reflections on the theoretical implications of this study and the lessons for managers and policymakers.
Management Model for Dairy Production Based on a Business Ecosystem Concept
Authors: Bonamigo Andrei , Ferenhof Helio Aisenberg , Tezza Rafael , Forcellini Fernando Antonio
Published: March 2020

This article proposes and evaluates a management model to boost the dairy production development from the perspective of a business ecosystem concept. This study proposes a management model based on two bibliographic systematic reviews of the dairy production. To analyze the resulting portfolio, the authors used a prior content analysis proposed by another researcher, which served as the basis for analysis and discussion of the elements for the model construction. Then, the model was tested with dairy experts. This research identified a total of 13 models which apply to dairy production and 2 models from the business ecosystem concept perspective. Consulting with 450 experts in the dairy sector, the authors empirically evaluated the model. The authors found that the results demonstrated an important validity indicator and model reliability in practice. Based on the finding, this article proposes a management model for dairy production from the business ecosystem concept.
MHD Heat Transfer Flow of Casson Fluid with Velocity and Thermal Slips over a Stretching Wedge in the Presence of Thermal Radiation
Authors: Bano Nasreen , Singh B.B. , Sayyed Shoeb R.
Published: March 2020

This article investigates the boundary layer flow and heat transfer of an electrically conducting Casson fluid over a stretching wedge by considering the effects of suction/injection, velocity and thermal slips and thermal radiation. By applying the appropriate similarity transformations,the governing partial differential equations are transformed to highly non-linear ordinary differential equations. These resulting similarity equations are then solved by a new analytic method namely DTM-BF, based on differential transformation method (DTM) and base function (BF). A comparativestudy of the present numerical results has been made with the already published results available in the literature. The effects of various governing parameters on the flow and heat transfer characteristics have been discussed graphically.
MHD Stagnation-Point Flow and Heat Transfer over an Exponentially Stretching/Shrinking Vertical Permeable Cylinder
Authors: Bano Nasreen , Singh B.B. , Sayyed Shoeb R.
Published: March 2020

The present literature analyzes the MHD stagnation-point flow of an incompressible fluidover an exponentially stretching/shrinking permeable cylinder in the presence of a transverse magnetic field, and suction/injection. The governing partial differential equations in cylindrical form aretransformed into coupled ordinary differential equations (ODEs) using suitable similarity transformations. These ODEs are solved using optimal homotopy analysis method (OHAM) via Mathematicasoftware BVPh 2.0 package. The effects of various governing parameters such as curvature parameter, magnetic parameter, wall transpiration parameter, velocity ratio parameter and Prandtl number onvelocity and temperature profiles have also been examined graphically.
Effects of Retardation Time on Non-Newtonian Electro-Osmotic Flow in a Micro-Channel
Authors: Adamu G.T. , Kwami A.M. , Abdulhameed Mohammed , Yakubu D.G.
Published: March 2020

In this paper, we have studied the effects of retardation time of non-Newtonian Oldroyd-B type fluid driven by Helmholtz-Smoluchowski velocity in a micro-channel. The potential electric field is applied along the length of the micro-channel describing by the Poisson–Boltzmann equation. The governing model equation was solved analytically using the classical method of partial differential equations. Analytical solution was simulated with the help of MATHEMATICA software and the graphical results for various physical flow parameters were analyzed. Results shows that for larger values of retardation time of a viscoelastic fluid the higher the viscoelastic effect of the fluid and this makes it to need more time for the stress to respond to deformation. Also, the electrokinetic width of micro-channel play a vital rule on the performance of velocity distribution.
Effects of Inlet and Outlet Ports of Ventilated Square Cavity on Flow and Heat Transfer
Authors: Laidoudi Houssem , Helmaoui Mustapha , Azeddine Belbachir , Ayad Adel , Ghenaim Abedallah
Published: March 2020

This paper deals with numerical simulations of forced convection from a pair of identical cylinders arranged in tandem manner inside a square cavity of single inlet and outlet ports. The gap distance between the cylinders is fixed with half of square length. The main purpose of this study is to see the effect of inlet and outlet port positions on fluid flow and heat transfer rate. The governing equations of continuity, momentum and energy have been solved using finite-volume method in laminar, steady and two dimensional directions. The work has been done in the range of these conditions: Re = 1 to 40, at fixed Pr = 7.01. Three positions of inlet and outlet port have been selected. The mean results of flow patterns and distribution temperature are illustrated under the contours of streamline and isotherm respectively. The drag and lift coefficients of each cylinder is computed and discussed. The average Nusselt number of both cylinders is also presented and discussed. It was found that the inlet and outlet ports have significant effects on heat transfer from the confined cylinders.
Ursus gr. spelaeus from Grotta del Bandito (Piedmont, Northern Italy). 1. Morphodynamics of teeth and indications of an evolutionary step
Authors:   University of Pavia, Dipartimento di Scienze della Terra e dell’Ambiente, Pavia, Italy, Santi Giuseppe , Rossi Mario ,   Museo Civico di Storia Naturale, Verona, Italy
Published: March 2020

This study is focused on cave bears from the Grotta del Bandito (Cuneo Province, Piedmont Region, Northern Italy), especially their teeth. The morphodynamic analyses have been elaborated and compared with other cave bears from Northern Italy, and other cave bear taxa from particular European sites. The Grotta del Bandito bears are similar in size to other cave bears from Italy, and no differences were observed with the other cave bear species or subspecies (e.g. U. ingressus, U. s. ladinicus, U. s. eremus). Thus their inclusion in the U. gr. spelaeus is the most appropriate classification, and they show a simpler dental surface than the “modern” cave bears (i.e. ingressus). The question of whether a single species of spelaeus lived in North Italy, is also introduced. In fact, the differences in size are probably the result of population variability, and no clear evidence of other spelaeoid species and/or subspecies, i.e. ingressus, s. ladinicus and s. eremus, was discovered.
Evaluating Trends and Seasonality in Modeled PM2.5 Concentrations Using Empirical Mode Decomposition
Authors: Luo Huiying , Astitha Marina , Hogrefe Christian , Mathur Rohit , Rao S. Trivikrama
Published: March 2020

Abstract. Regional-scale air quality models are being used for studying the sources, composition, transport, transformation, and deposition of fine particulate matter (PM2.5). The availability of decadal air quality simulations provides a unique opportunity to explore sophisticated model evaluation techniques rather than relying solely on traditional operational evaluations. In this study, we propose a new approach for process-based model evaluation of speciated PM2.5 using improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (improved CEEMDAN) to assess how well version 5.0.2 of the coupled Weather Research and Forecasting model – Community Multiscale Air Quality model (WRF-CMAQ) simulates the time-dependent long-term trend and cyclical variations in the daily average PM2.5 and its species, including sulfate (SO4), nitrate (NO3), ammonium (NH4), chloride (Cl) organic carbon (OC) and elemental carbon (EC). The utility of the proposed approach for model evaluation is demonstrated using PM2.5 data at three monitoring locations. At these locations, the model is generally more capable of simulating the rate of change in the long-term trend component than its absolute magnitude. Amplitudes of the sub-seasonal and annual cycles of total PM2.5, SO4 and OC are well reproduced. However, the time-dependent phase difference in the annual cycles for total PM2.5, OC and EC reveal a phase shift of up to half year, indicating the need for proper temporal allocation of emissions and for updating the treatment of organic aerosols compared to the model version used for this set of simulations. Evaluation of sub-seasonal and inter-annual variations indicates that CMAQ is more capable of replicating the sub-seasonal cycles than inter-annual variations in magnitude and phase.
On the alignment of velocity and magnetic fields within magnetosheath jets
Authors: Plaschke Ferdinand , Jernej Maria , Hietala Heli , Vuorinen Laura
Published: March 2020

Abstract. Jets in the subsolar magnetosheath are localized enhancements in dynamic pressure that are able to propagate all the way from the bow shock to the magnetopause. Due to their excess velocity with respect to their environment, they push slower ambient plasma out of their way, creating a vortical plasma motion in and around them. Simulations and case study results suggest that jets also modify the magnetic field in the magnetosheath on their passage, aligning it more with their velocity. Based on Magnetospheric Multiscale (MMS) jet observations and corresponding superposed epoch analyses of the angles ϕ between the velocity and magnetic fields, we can confirm that this suggestion is correct. However, while the alignment is more significant for faster than for slower jets, and for jets observed close to the bow shock, the overall effect is small: typically, reductions in ϕ of around 10∘ are observed at jet core regions, where the jets' velocities are largest. Furthermore, time series of ϕ pertaining to individual jets significantly deviate from the superposed epoch analysis results. They usually exhibit large variations over the entire range of ϕ: 0 to 90∘. This variability is commonly somewhat larger within jets than outside them, masking the systematic decrease in ϕ at core regions of individual jets.
HighResMIP versions of EC-Earth: EC-Earth3P and EC-Earth3P-HR. Description, model performance, data handling and validation
Authors: Haarsma Rein , Acosta Mario , Bakhshi Rena , Bretonnière Pierre-Antoine Bretonnière , Caron Louis-Philippe , Castrillo Miguel , Corti Susanna , Davini Paolo , Exarchou Eleftheria , Fabiano Federico , Fladrich Uwe , Fuentes Franco Ramon , García-Serrano Javier , von Hardenberg Jost , Koenigk Torben , Levine Xavier , Meccia Virna , van Noije Twan , van den Oord Gijs , Palmeiro Froila M. , Rodrigo Mario , Ruprich-Robert Yohan , Le Sager Philippe , Tourigny Étienne , Wang Shiyu , van Weele Michiel , Wyser Klaus
Published: March 2020

Abstract. A new global high-resolution coupled climate model, EC-Earth3P-HR has been developed by the EC-Earth consortium, with a resolution of approximately 40 km for the atmosphere and 0.25 degree for the ocean, alongside with a standard resolution version of the model, EC-Earth3P (80 km atmosphere, 1.0 degree ocean). The model forcing and simulations follow the HighResMIP protocol. According to this protocol all simulations are made with both high and standard resolutions. The model has been optimized with respect to scalability, performance, data-storage and post-processing. In accordance with the HighResMIP protocol no specific tuning for the high resolution version has been applied. Increasing horizontal resolution does not result in a general reduction of biases and overall improvement of the variability, and deteriorating impacts can be detected for specific regions and phenomena such as some Euro-Atlantic weather regimes, whereas others such as El Niño-Southern Oscillation show a clear improvement in their spatial structure. The omission of specific tuning might be responsible for this. The shortness of the spin-up, as prescribed by the HighResMIP protocol, prevented the model to reach equilibrium. The trend in the control and historical simulations, however, appeared to be similar, resulting in a warming trend, obtained by subtracting the control from the historical simulation, close to the observational one.
Special Issue. The Social Protection of Women and Girls: Links to Crime and Justice at CSW63. Guest Editors' Introduction
Authors: Ranjan Sheetal , Barberet Rosemary , Beichner Dawn , Arnull Elaine
Published: March 2020

We are pleased to introduce this special issue of the International Journal for Crime, Justice and Social Democracy, titled ‘The Social Protection of Women and Girls: Links to Crime and Justice at CSW63’. This issue contains a selection of articles from presentations at a series of parallel and side events held at the Commission on the Status of Women’s 63rd session (CSW63) at the UN Headquarters in New York City, United States.
A usability evaluation of Web user interface scrolling types
Authors: Sharma Sushil , Murano Pietro
Published: March 2020

This paper details a usability evaluation of scrolling techniques on websites. The scrolling methods evaluated were normal scrolling (with default pagination), infinite scrolling, infinite scrolling with a ‘load more’ button and Infinite Scrolling with ‘pagination’. The four scrolling types were evaluated in the context of tasks that involved either serendipitous type tasks or goal-oriented type tasks. The evaluation was principally about the ‘raw’ performance and participant perceptions. This is because it was felt that the greatest gap in knowledge concerned these aspects. The evaluation was done by means of an experiment and the data collected was statistically analysed. The results were mixed in nature, where no single scrolling method stood out as being the most usable.
Reason vs. emotion in the Brexit campaign: How key political actors and their followers used Twitter
Authors: Rosa Jorge Martins , Jiménez Ruiz Cristian
Published: March 2020

Online social network platforms have been, since their rise to prominence, considered as relevant gateways to study individual behaviors. One of those realms is politics, from massive movements and demonstrations to institutionalized events like general elections or referendums in democratic countries. In this paper, we are interested in the behavior of professional politicians in the United Kingdom European Union membership referendum of June 2016, colloquially known as the “Brexit referendum”. We ask how, during the final weeks of the campaign, four key political actors (Jeremy Corbyn, David Cameron, Boris Johnson, and Nigel Farage) used Twitter through their official accounts regarding this popular consultation and how that action was received by their followers. To be more precise, we ask if they predominantly appealed to emotions or to rational arguments (Usage Axis), and what was, in each case, the impact of the tweets (Impact Axis). We conclude that, regardless of the way each actor used Twitter during the campaign, the appeal to emotions and the debasement of the opposing views tended to have more relevance, which may be a distressing hypothesis for democracy.
Antioxidant and Glucose Lowering Effects of Hydroethanolic Extract of Baillonella toxisperma Pulp
Authors: Roussel Takuisssu Nguemto Guy , Laure Ngondi Judith , Enyong Oben Julius
Published: March 2020

Hyperglycemia and oxidative stress play an important role in the pathogenesis of diabetes. Their management is a key point in the prevention and treatment of this disease which is a potential cause of mortality in the world. We evaluated the antioxidant and glucose lowering effects of hydroethanolic extract of Baillonella toxisperma pulp. The total polyphenol and flavonoid contents were determined and the antioxidant activity was evaluated by 3 mechanisms: scavenging by DPPH•, ABTS• and NO• radicals; reducing property by MoO42+ and Fe3+ reduction; metal chelation by Cu2+ and Fe2+. Glucose adsorption capacity was evaluated followed by the capacity to promote insulino-sensitivity through glucose uptake by yeast and muscle cell assays. The hydroethanolic extract of B. toxisperma pulp possessed high total polyphenols and flavonoids; 459.55 µg Equivalent Gallic Acid/mg and 252.15 µg of Equivalent Catechin /mg respectively. This showed their ability to scavenge DPPH•, ABTS• and NO• radicals with SC50 of 3.49, 3.24 and 4.28 mg/ml respectively. The extract also reduced MoO42+ and Fe3+ and chelated Cu2+ through inhibiting their capacity to induce hemolysis with the IC50 of 3.49 mg/ml. The extract showed a high glucose binding capacity with a glucose binding percentage rise of 60 %. It increased yeast cell absorption of glucose with the increasing percentage varying from 42.97 to 56.62 %. In the muscle cells, after 30 min of administration of the extract, we also noted an increased glucose absorption with the percentage glucose reducing to 22 %. We demonstrated that hydroethanolic extract of B. toxisperma pulp possess antiradical, reducing, metal chelating, glucose binding and insulino-sensitivity promoting properties. These mechanisms imply that B. toxisperma pulp is both a good antioxidant and an antihyperglycemiant, thus a potential agent in the management of diabetes and its complications.
The Chreia in the Forrest
Authors: Rois Robert
Published: March 2020

Interpretation of poetry becomes manageable when we find in the poets' background elements of early training which are revealed in their work. In the schools of the British Renaissance Aphothonius’ Progymnasmata was the preferred manual of classical rhetoric used to teach students how to write. The composition exercises in this manual of rhetoric were applied to the art of letter writing, since this was the most common means for communication at the time.

Among the various writing exercises from the Progymnasmata used in the grammar schools of the English Renaissance, the chreia predominates. We can see that the main thematic headings and subdivisions used in the epistolary lyric fit this particular format. John Donne introduced this innovation to English poetry. Ben Jonson perfected the technique, as we see in his book of poems, The Forrest. Several of his best known poems fit the chreia pattern. We close our study with a suggestion that To Heaven, one of the best known poems of the English Renaissance, can be interpreted as a letter addressed directly to God.
Modelización científica escolar para explorar el sistema circulatorio en Educación Infantil
Authors: De Alba Villaseñor Vanessa , Ramos de Robles Silvia Lizette
Published: March 2020

Se presenta un estudio cuyo propósito fue analizar, a través de la interacción en el aula, los procesos de modelización científica en un grupo de estudiantes de Educación Infantil durante una secuencia didáctica relacionada con el sistema circulatorio. El marco teórico-metodológico se basó en las acciones de modelización propuestas por Mortimer y Scott (2003). Los resultados dan cuenta de que la acción más recurrente son las descripciones empíricas. Por su parte, en la construcción del modelo, los estudiantes fueron incorporando elementos de la estructura, características y funciones que dieron como resultado una visión más compleja del modelo del sistema circulatorio en el cual involucran a órganos de diferentes partes del cuerpo e intentan relacionarse a través del paso de la sangre.
Una propuesta innovadora de inclusión de valores morales en la enseñanza de Matemáticas
Authors: Miranda Isaias , Freire Gard Elena Glenda
Published: March 2020

El objetivo de este artículo es doble: 1) documentar el diseño de una secuencia didáctica innovadora que relaciona problemas sobre el concepto de función a trozos con preguntas que involucran dilemas sobre valores morales, y 2) analizar cómo estudiantes de Enseñanza Media (17-18 años de edad), al responder a los dilemas, relacionan el concepto de función a trozos con valores morales específicos. La metodología para elaborar la secuencia se basó en un enfoque socioformativo del aprendiz. El análisis se llevó a cabo a partir del discurso escrito y hablado de los estudiantes en clase. Los resultados indican que, al responder los dilemas, los estudiantes manipulan el concepto de función a trozos tanto en términos de su significación matemática como de su valoración moral. Se concluye que la propuesta puede ayudar a organizar una enseñanza más integral para el estudiante de Matemáticas.
PREWENCJA W SYSTEMIE KONTROLI PRZESTĘPCZOŚCI EKONOMICZNEJ
Authors: Bałandynowicz Andrzej
Published: March 2020

Aktualnie problematyce, jaką jest przestępczość gospodarcza, nie wystarczy tylko adaptacja różnych konstrukcji teoretycznych, wymagana jest również konfrontacja zróżnicowanych interpretacji tego zjawiska na przestrzeni dziejów i zmian polityczno-społecznych. Zasadnicze kwestie wymagające badań to: a) przyczyny i sposoby ustanawiania przepisów, b) przyczyny i sposoby ich naruszania, c) zakres
i pokrywające się obszary działalności organów wymiaru sprawiedliwości i organów kontroli. Istotą rzeczy w tych trzech kwestiach jest pytanie o uprawnienia – legitymację dla ustawodawcy, dla ludzi związanych z gospodarką i dla działań organów przymusu. W artykule przedstawiono rozważania dotyczące możliwości przeciwdziałania patologiom w administracji i biznesie, zwracając uwagę na podejście Brathwaite’a i Geisa, wskazano na prowadzenie nielegalnych i zorganizowanych działań oraz możliwości wykorzystania środków zapobiegawczych.
The effect of vitamin C on the gene expression profile of sperm protamines in the male partners of couples with recurrent pregnancy loss: A randomized clinical trial
Authors: Hamidian Saeideh , Talebi Ali Reza , Fesahat Farzaneh , Bayat Mohammad , Mirjalili Ali Mohammad , Ashrafzadeh Hamid Reza , Rajabi Mahya , Montazeri Fateme , Babaei Saeid
Published: March 2020

Objective: Since sperm abnormalities are known to be a major reason for recurrent pregnancy loss (RPL), any defects in DNA structure and chromatin condensation can place embryos at risk in the early stage of development and implantation. As antioxidants such as vitamin C may play a protective role against the destruction of protamine genes in sperm chromatin, this study was conducted to evaluate the effects of vitamin C on chromatin and the expression of protamine genes in the male partners of couples with RPL.Methods: Twenty male partners of couples with RPL were selected as the intervention group and received vitamin C supplementation (250 mg daily for 3 months). Healthy fertile men (n=20) were included as controls. Sperm chromatin, DNA integrity, and the expression levels of protamine genes were evaluated before and after treatment.Results: Significant differences were found in sperm morphology, protamine deficiency, and apoptosis between the two groups and before and after vitamin C administration. A significant change was found in mRNA levels of PRM1, PRM2, and the PRM1/PRM2 ratio after treatment.Conclusion: Daily oral administration of vitamin C may improve human sperm parameters and DNA integrity by increasing protamine gene expression levels in the male partners of couples with RPL. The beneficial effects of vitamin C supplementation as an antioxidant for the male partners of couples with RPL could lead to improved pregnancy outcomes in these cases.
Verificação da Reprodução de Workflows Científicos por meio de Algoritmos de Detecção de Plágio
Authors: Santiago Filipe Tadeu , de Oliveira Daniel
Published: March 2020

Atualmente, diversos experimentos científicos são realizados por intermédio de simulações computacionais. Além da especificação, execução e monitoramento desses experimentos, um dos principais desafios da comunidade científica é como podemos verificar a reprodução de tais experimentos. Para que um experimento possa ser classificado como científico, seus resultados devem ser passíveis de reprodução por terceiros em condições similares. Em experimentos modelados como workflows científicos e executados em sistemas de gerência de workflows científicos, os dados de proveniência capturados são capazes de descrever tanto a especificação do workflow quanto o histórico da execução do mesmo. Dessa forma, esses dados oferecerem a base para verificar se uma determinada execução de um experimento é a reprodução de uma execução anterior. Entretanto, como comparar os dados de proveniência de execuções distintas de workflows não é uma tarefa trivial. Para verificar a reprodução desses workflows, nesse artigo fazemos uso de algoritmos de detecção de plágio. Tais algoritmos são capazes de verificar a semelhança entre execuções bastando ter acesso à base de proveniência prospectiva e retrospectiva do experimento.
E-SECO ProVersion: Manutenção e Evolução de Experimentos Científicos
Authors: Sirqueira Tassio F. M. , Dalpra Humberto L. O. , Braga Regina , Araújo Marco A. P. , David José Maria N. , Campos Fernanda
Published: March 2020

Este trabalho discute algumas características de um ecossistema de software científico e do ciclo de vida de um experimento, com ênfase em manutenção e evolução dos experimentos, usando dados de proveniência. Uma extensão do modelo PROV é apresentada conjuntamente com uma ontologia, PROV-OEXT. O artigo também apresenta repositórios de workflows existentes e discute o suporte provido por esses no que tange a manutenção e evolução.
CrossFlow: Interpolando Dados Pluviométricos com Apoio de Validação Cruzada em Workflows Científicos
Authors: Tomaz Ulisses , Santos Ednaldo , Lyra Gustavo , da Cruz Sergio
Published: March 2020

Os estudos de eventos atmosféricos extremos são importantes para a sociedade em geral. A chuva, tendo a altura pluviométrica como principal variável, insere-se neste contexto. Os dados pluviométricos brutos muitas vezes apresentam-se como longas séries que contém erros e falhas. Essas condições representam um desafio para a análise de padrões e predição de eventos. Esse trabalho apresenta uma abordagem inédita baseada em workflows científicos que conjugam quatro métodos de interpolação e de cruzamento de dados para o preenchimento de falhas nas séries históricas. Nossos experimentos utilizaram dezenas de estações no estado do Rio de Janeiro em um período de 75 anos e produziram análises e dados curados de alta qualidade e livres de falhas.
An Architecture for Animal Sound Identification based on Multiple Feature Extraction and Classification Algorithms
Authors: Tacioli Leandro , Toledo Luíz , Medeiros Claudia
Published: March 2020

Automatic identification of animals is extremely useful for scientists, providing ways to monitor species and changes in ecological communities. The choice of effective audio features and classification techniques is a challenge on any audio recognition system, especially in bioacoustics that commonly uses several algorithms. This paper presents a novel software architecture that supports multiple feature extraction and classification algorithms to help on the identification of animal species from their recorded sounds. This architecture was implemented by the WASIS software, freely available on the Web.
Coordenando permissões de postagem em blogs por meio de Web fingerprinting
Authors: Queiroz Jordan , Correa Samantha , Feitosa Eduardo , Gadelha Bruno
Published: March 2020

Web fingerprinting é uma técnica que consiste em obter caracter ísticas relacionadas ao software e hardware do dispositivo. De posse dessas características, uma chave de identificação pode ser gerada com alta probabilidade de ser única, dessa forma, identificando unicamente o usuário. Sua adoção dar-se a partir de duas perspectivas: benigna (autenticação e evitar fraudes) e maligna (rastrear usuários e explorar vulnerabilidades). Neste trabalho é proposto uma ferramenta que emprega Web fingerprinting para gerenciar as permissões de postagens dos usuários em ambientes de sistemas colaborativos.
Laboratórios Online Móveis em um Ambiente de Experimentação Colaborativo
Authors: Simão José Pedro Schardosim , de Lima João Paulo Cardoso , Saliah-Hassane Hamadou , da Silva Juarez Bento , Alves João Bosco da Mota
Published: March 2020

Os laboratórios remotos têm papel importante no aumento da flexibilização e do grau de alcance de atividades práticas no ensino. No entanto, o modelo atual de distribuição dos laboratórios remotos não considera um cenário dinâmico que inclua colaboração, laboratórios peer-to-peer e móveis. Neste artigo é apresentado um conjunto de ferramentas para criação de ambientes colaborativos de aprendizagem com laboratórios online móveis que permite aos estudantes criarem seus próprios laboratórios móveis e compartilhá-los com colegas e professores. A abordagem utilizada mostra-se compatível com configurações máquinas e redes que o usuário alvo possui em escolas e na sua residência e prevê a recuperação de informações para avaliação de aprendizagem.
Uma Abordagem para Identificação de Entidades Influentes em Eventos Comentados nas Redes Sociais Online
Authors: M. Neto Rayol , Souza Bruno Á. , Almeida Thais G. , Nakamura Fabíola G. , Nakamura Eduardo F.
Published: March 2020

Redes Sociais Online (RSO) permitem aos usuários compartilhar conteúdo de qualquer tipo. Nestas redes, os usuários podem ser vistos como sensores sociais, onde suas opini˜oes e comentários a respeito de um evento podem ser utilizados para estudo (e.g., caracterização de eventos, reconhecimento de entidades influentes). RSO podem ser modeladas como redes complexas, onde as entidades são representadas pelos vértices e as arestas caracterizam a conexão entra elas. Utilizando esta abordagem, podemos determinar quais são as entidades mais influentes no contexto estudado através de medidas de centralidade (e.g., Betweenness e Pagerank). Com base nisto, este artigo apresenta uma análise das entidades mais fluentes sob a perspectiva de um evento em Redes Sociais Online e apresenta um estudo das comunidades detectadas. Como resultados percebemos que as medidas de centralidade apresentam diferentes entidades influentes, isto demonstra que embora todas as entidades façam parte do mesmo evento, algumas tem influência maior dependendo do aspecto estudado. Com relação a detecção de comunidades percebemos que entidades que foram agrupadas juntas, estão diretamente ligadas a um sub-evento dentro do contexto estudado.