bluuebunny/crossref_metadata_2025 huggingface dataset:
The Toxicity Assessment of Iron Oxide (Fe3O4) Nanoparticles on Physical and Biochemical Quality of Rainbow Trout Spermatozoon
Authors: Özgür Mustafa Erkan , Ulu Ahmet , Balcıoğlu Sevgi , Özcan İmren , Köytepe Süleyman , Ateş Burhan
Published: October 2018

The aim of this study was to evaluate the in vitro effect of different doses (50, 100, 200, 400, and 800 mg/L) of Fe3O4 nanoparticles (NPs) at 4 °C for 24 h on the kinematics of rainbow trout (Oncorhynchus mykiss, Walbaum, 1792) spermatozoon. Firstly, Fe3O4 NPs were prepared at about 30 nm from Iron (III) chloride, Iron (II) chloride, and NH3 via a co-precipitation synthesis technique. Then, the prepared Fe3O4 NPs were characterized by different instrumental techniques for their chemical structure, purity, morphology, surface properties, and thermal behavior. The size, microstructure, and morphology of the prepared Fe3O4 NPs were studied by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) spectroscopy, and scanning electron microscopy (SEM) equipped with an energy-dispersive X-ray spectrometer (EDS). The thermal properties of the Fe3O4 NPs were determined with thermogravimetric analysis (TGA), differential thermal analysis (DTA), and differential scanning calorimeter (DSC) analysis techniques. According to our results, there were statistically significant (p < 0.05) decreases in the velocities of spermatozoon after treatment with 400 mg/L Fe3O4 NPs. The superoxide dismutase (SOD) and catalase (CAT) activities were significant (p < 0.05) decrease after 100 mg/L in after exposure to Fe3O4 NPs in 24 h. As the doses of Fe3O4 NPs increases, the level of malondialdehyde (MDA) and total glutathione (tGSH) significantly (p < 0.05) increased at doses of 400 and 800 mg/L.
The Gravity of Light-Waves
Authors: Van Holten Jan Willem
Published: October 2018

Light waves carry along their own gravitational field; for simple plain electromagnetic waves, the gravitational field takes the form of a p p -wave. I present the corresponding exact solution of the Einstein–Maxwell equations and discuss the dynamics of classical particles and quantum fields in this gravitational and electromagnetic background.
Memory T Cells in Flavivirus Vaccination
Authors: Li Guangyu , Teleki Cody , Wang Tian
Published: October 2018

Flaviviruses include many medically important viruses, such as Dengue virus (DENV), Japanese encephalitis (JEV), tick-borne encephalitis (TBEV), West Nile (WNV), yellow fever (YFV), and Zika viruses (ZIKV). Currently, there are licensed human vaccines for DENV, JEV, TBEV and YFV, but not for WNV or ZIKV. Memory T cells play a central role in adaptive immunity and are important for host protection during flavivirus infection. In this review, we discuss recent findings from animal models and clinical trials and provide new insights into the role of memory T cells in host protective immunity upon vaccination with the licensed flavivirus vaccines.
Effect of Climate Change on Soil Erosion in a Mountainous Mediterranean Catchment (Central Pindus, Greece)
Authors: Stefanidis Stefanos , Stathis Dimitrios
Published: October 2018

The aim of this study was to assess soil erosion changes in the mountainous catchment of the Portaikos torrent (Central Greece) under climate change. To this end, precipitation and temperature data were derived from a high-resolution (25 × 25 km) RegCM3 regional climate model for the baseline period 1974–2000 and future period 2074–2100. Additionally, three GIS layers were generated regarding land cover, geology, and slopes in the study area, whereas erosion state was recognized after field observations. Subsequently, the erosion potential model (EPM) was applied to quantify the effects of precipitation and temperature changes on soil erosion. The results showed a decrease (−21.2%) in annual precipitation (mm) and increase (+3.6 °C) in mean annual temperature until the end of the 21st century, and the above changes are likely to lead to a small decrease (−4.9%) in soil erosion potential.
Evaluation of Genetic Variation among Sorghum Varieties from Southwest China via Genome Resequencing
Authors: Yan Songxian , Wang Li , Zhao Liang , Wang Heyu , Wang Diqiang
Published: October 2018

Little is known regarding genomic variation among glutinous sorghum [Sorghum bicolor (L.) Moench] varieties grown in southwest China, which are primarily used to brew the popular Jiang‐flavor liquor. This study evaluated genomic variation among six representative sorghum accessions via whole‐genome resequencing. The evaluation revealed 2365,363 single‐nucleotide polymorphisms (SNPs), 394,365 insertions and deletions, and 47,567 copy number variations among the six genomes. Chromosomes 5 and 10 showed relatively high SNP densities, whereas whole‐genome diversity in this population was low. In addition, some chromosomal loci exhibited obvious selection during the breeding process. Sorghum accessions from southwest China formed an elite germplasm population compared with the findings of other geographic populations, and the elite variety ‘Hongyingzi’ contained 79 unique genes primarily involved in basic metabolism. The six sorghum lines contained a large number of high‐confidence genes, with Hongyingzi in particular possessing 104 unique genes. These findings advance our understanding of domestication of the sorghum genome, and Chinese sorghum accessions will be valuable resources for further research and breeding improvements.
Development and Application of High‐Density Axiom Cajanus SNP Array with 56K SNPs to Understand the Genome Architecture of Released Cultivars and Founder Genotypes
Authors: Saxena Rachit K. , Rathore Abhishek , Bohra Abhishek , Yadav Pooja , Das Roma Rani , Khan Aamir W. , Singh Vikas K. , Chitikineni Annapurna , Singh Indra P. , Kumar C. V. Sameer , Saxena K. B. , Varshney Rajeev K.
Published: October 2018

As one of the major outputs of next‐generation sequencing (NGS), a large number of genome‐wide single‐nucleotide polymorphisms (SNPs) have been developed in pigeonpea [Cajanus cajan (L.) Huth.]. However, SNPs require a genotyping platform or assay to be used in different evolutionary studies or in crop improvement programs. Therefore, we developed an Axiom Cajanus SNP array with 56K SNPs uniformly distributed across the genome and assessed its utility in a genetic diversity study. From the whole‐genome resequencing (WGRS) data on 104 pigeonpea lines, ∼2 million sequence variations (SNPs and insertion–deletions [InDels]) were identified, from which a subset of 56,512 unique and informative sequence variations were selected to develop the array. The Axiom Cajanus SNP array developed was used for genotyping 103 pigeonpea lines encompassing 63 cultivars released between 1960 and 2014 and 40 breeding, germplasm, and founder lines. Genotyping data thus generated on 103 pigeonpea lines provided 51,201 polymorphic SNPs and InDels. Genetic diversity analysis provided in‐depth insights into the genetic architecture and trends in temporal diversity in pigeonpea cultivars. Therefore, the continuous use of the high‐density Axiom Cajanus SNP array developed will accelerate high‐resolution trait mapping, marker‐assisted breeding, and genomic selection efforts in pigeonpea.
FINDING A PROMISING VENTURE CAPITAL PROJECT WITH TODIM UNDER PROBABILISTIC HESITANT FUZZY CIRCUMSTANCE
Authors: Zhang Weike , Du Jiang , Tian Xiaoli
Published: October 2018

Considering the risk aversion for gains and the risk seeking for losses of venture capitalists, the TODIM has been chosen as the decision-making method. Moreover, group decision is an available way to avoid the limited ability and knowledge etc. of venture capitalists. Simultaneously, venture capitalists may be hesitant among several assessed values with different probabilities to express their real perception because of the uncertain decision-making environment. However, the probabilistic hesitant fuzzy information can solve such problems effectively. Therefore, the TODIM has been extended to probabilistic hesitant fuzzy circumstance for the sake of settling the decision-making problem of venture capitalists in this paper. Moreover, due to the uncertain investment environment, the criteria weights are considered as probabilistic hesitant fuzzy information as well. Then, a case study has been used to verify the feasibility and validity of the proposed TODIM. Also, the TODIM with hesitant fuzzy information has been carried out to analysis the same case. From the comparative analysis, the superiority of the proposed TODIM in this paper has already appeared.
The SFR–M* Correlation Extends to Low Mass at High Redshift
Authors: Iyer Kartheik , Gawiser Eric , Davé Romeel , Davis Philip , Finkelstein Steven L. , Kodra Dritan , Koekemoer Anton M. , Kurczynski Peter , Newman Jeffery A. , Pacifici Camilla , Somerville Rachel S.
Published: October 2018

To achieve a fuller understanding of galaxy evolution, SED fitting can be used to recover quantities beyond stellar masses (M
*) and star formation rates (SFRs). We use star formation histories (SFHs) reconstructed via the Dense Basis method of Iyer & Gawiser for a sample of 17,873 galaxies at 0.5 < z < 6 in the Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey GOODS-S field to study the nature and evolution of the SFR–M
* correlation. The reconstructed SFHs represent trajectories in SFR–M
* space, enabling us to study galaxies at epochs earlier than observed by propagating them backward in time along these trajectories. We study the SFR–M
* correlation at z = 1, 2, 3, 4, 5, 6 using both direct fits to galaxies observed at those epochs and SFR–M
* trajectories of galaxies observed at lower redshifts. The SFR–M
* correlations obtained using the two approaches are found to be consistent with each other through a K-S test. Validation tests using SFHs from semi-analytic models and cosmological hydrodynamical simulations confirm the sensitivity of the method to changes in the slope, normalization, and shape of the SFR–M
* correlation. This technique allows us to further probe the low-mass regime of the correlation at high z by ∼1 dex and over an effective volume of ∼10× larger than possible with just direct fits. We find that the SFR–M
* correlation is consistent with being linear down to M
* ∼ 106
M
⊙ at z > 4. The evolution of the correlation is well described by

, where t
univ is the age of the universe in Gyr.
The Identification of a Planar Magnetic Structure within the ICME Shock Sheath and Its influence on Galactic Cosmic-Ray Flux
Authors: Shaikh Zubair I. , Raghav Anil N. , Vichare Geeta , Bhaskar Ankush , Mishra Wageesh
Published: October 2018

A Forbush decrease is a sudden decrease in cosmic-ray intensity caused by transient interplanetary disturbances. The substructure of an interplanetary counterpart of a coronal mass ejection (ICME) such as a shock sheath and/or a magnetic cloud independently contributes to cosmic-ray decrease, which is evident as a two-step decrease. Our earlier work has shown multistep decrease and recovery within the ICME-driven shock-sheath region. Further, we have suggested that the presence of a small-scale flux rope within the shock-sheath region causes a steady/gradual recovery in cosmic-ray intensity. Here, we demonstrate the presence of a planar magnetic structure (PMS) and small-scale flux rope within a single shock sheath of an ICME. The plot of the elevation (θ) versus azimuthal (ϕ) angle of the interplanetary magnetic field (IMF) is used for the identification of the PMS. The planarity, efficiency, and a plane-normal vector are estimated by employing a minimum variance analysis (MVA) technique, which confirmed the presence of the PMS. In addition, a 2D-hodogram method in conjunction with the MVA technique is utilized to identify the flux-rope structure and turbulent conditions in the corresponding ICME region. The observation in the visible suggests that the PMS region within the ICME shock sheath caused the decrease in the cosmic-ray flux observed at Earth. It has also been observed that the sharp variations in the IMF (i.e., turbulence) cause a decrease, whereas the flux-rope structure is responsible for the recovery of the CR flux. Further studies are needed to investigate their origins and to confirm their effects on space weather.
Modeling of the Quasar Main Sequence in the Optical Plane
Authors: Panda Swayamtrupta , Czerny Bożena , Adhikari Tek P. , Hryniewicz Krzysztof , Wildy Conor , Kuraszkiewicz Joanna , Śniegowska Marzena
Published: October 2018

The concept of the quasar main sequence is very attractive since it stresses correlations between various parameters and implies the underlying simplicity. In the optical plane defined by the width of the Hβ line and the ratio of the equivalent width of the Fe ii to Hβ observed objects form a characteristic pattern. In this paper we use a physically motivated model to explain the distribution of quasars in the optical plane. Continuum is modeled as an accretion disk with a hard X-ray power law uniquely tight to the disk at the basis of observational scaling, and the broad-line region distance is determined also from observational scaling. We perform the computations of the Fe ii and Hβ line production with the code CLOUDY. We have only six free parameters for an individual source, maximum temperature of accretion disk, Eddington ratio, cloud density, cloud column density, microturbulence, and iron abundance, and only the last four remain as global parameters in our modeling of the whole sequence. Our theoretically computed points cover well the optical plane part populated with the observed quasars, particularly if we allow for supersolar abundance of heavy elements. Explanation of the exceptionally strong Fe ii emitter requires stronger contribution from the dark sides of the clouds. Analyzing the way our model covers the optical plane, we conclude that there is no single simple driver behind the sequence, as neither Eddington ratio nor broadband spectrum shape plays the dominant role. Also, the role of the viewing angle in providing the dispersion of the quasar main sequence is apparently not as strong as expected.
Buoyancy-driven Magnetohydrodynamic Waves in a Partially Ionized Plasma
Authors: Hague A. , Erdélyi R.
Published: October 2018

A magnetohydrodynamic (MHD) fluid description is typically employed to study the magnetized plasma comprising the solar atmosphere. This approach has had many successes in modeling and explaining solar phenomena. Most often, the plasma is assumed to be fully ionized. While this approach is justified in the higher atmosphere, i.e., the solar corona; the temperature in the lower solar atmosphere is such that a large proportion of the fluid may be electrically neutral. This begs the question: to what degree are the results derived from a fully ionized MHD description valid? In this article, we investigate the effect of partial ionization on buoyancy-driven MHD waves (the MHD analog of internal gravity waves) by applying a simplified two-fluid description. We show that previously derived results may be applied, when the fluid is weakly ionized, if the ion–neutral collision frequency is high. We derive dispersion relations for buoyancy-driven MHD waves, which include correction factors and damping rates due to ion–neutral collisions.
Évaluation du coût de la prise en charge des patients atteints de Leucémie Myéloïde Chronique (LMC) en Midi-Pyrénées : impact économique des différents Inhibiteurs de Protéines Kinases
Authors: Mounié Michael , Costa Nadège , Gauthier Martin , Palmaro Aurore , Delpierre Cyrille , Despas Fabien , Lapeyre Mestre Maryse , Laurent Guy , Savy Nicolas , Molinier Laurent
Published: October 2018

La Leucémie Myéloïde Chronique (LMC), syndrome myéloprolifératif fréquent, représente 15 à 20% des cas de leucémie. L’introduction des Inhibiteurs de Protéine Kinase (IPK) a révolutionné le pronostic de survie des patients, transformant la LMC en maladie chronique avec une prise en charge sur le long terme et particulièrement coûteuse. L’objectif de l’étude est d’estimer le coût de la prise en charge des patients atteints de LMC en Midi-Pyrénées et particulièrement l’impact économique des différents Inhibiteurs de Protéines Kinases. L’analyse économique a été réalisée du point de vue de l’Assurance Maladie à partir des données du Système National d’Information Inter Régime de l’Assurance Maladie (SNIIRAM). Les coûts directs médicaux ont été étudiés de 3 mois avant jusqu’à 12 mois après l’initiation du traitement. Ces coûts ont été ajustés au moyen d’un modèle multivarié longitudinal. Le coût moyen de la prise en charge, pour l’année suivant l’initiation des IPK, a été évalué à 35 521€ (+/- 12 984). Le poste de dépense le plus important était les IPK, représentant 87% du coût total de la prise en charge. Une prise en charge par IPK de seconde génération entrainait une augmentation du coût de 51% à 84%. Cette étude est la première étude évaluant le coût de la prise en charge de la LMC en France. Elle met en évidence le caractère onéreux de la LMC et renforce la nécessité de mettre en œuvre des travaux complémentaires en prenant en considération une population d’étude plus importante et en intégrant des postes de dépenses supplémentaires.
Language, communication, and the politics of hope: Solidarity and work in the Italian migration infrastructure
Authors: Del Percio Alfonso
Published: October 2018

Cet article décrit le rôle du langage dans les coopératives sociales, des organismes qui œuvrent auprès de travailleurs transnationaux en Italie pour promouvoir leur accès à l’emploi et à l’indépendance socio-économique. Cette contribution soutient que, tout comme l’État, dont la gestion des inégalités se définit par des idéologies du colonialisme et un nationalisme genré et racialisé, les coopératives italiennes gèrent la contradiction entre les promesses démocratiques libérales d’égalité et une sélection sociale par le truchement d’un processus de mystification reposant sur le langage. Ceci mène alors à la reproduction de hiérarchies qui viennent compliquer l’accès des travailleurs transnationaux à l’égalité sociale.
Usages de l’Internet banking par les entreprises et effets sur la qualité de service
Authors: Fourati Ennouri Mona , Chaabouni Jamil
Published: October 2018

Les usages bancaires en ligne sont en évolution continue. Cependant, peu de recherches s’intéressent à ces usages et à leurs impacts sur les entreprises. Ce papier s’interroge sur les effets des usages des services bancaires en ligne sur la qualité des échanges entreprise-banque en termes de qualité de service. Les résultats de l’étude qualitative, menée auprès de neuf entreprises tunisiennes, ont permis de valider la typologie des usages développée théoriquement. Ils montrent que les usages de l’Internet banking sont basiques et que leurs effets sur la qualité de service sont plutôt mitigés.
Analyse des rôles des professionnels de GRH face à l’enjeu de la fidélisation des consultants
Authors: Tillou Caroline
Published: October 2018

En se basant sur une typologie adaptée des rôles des professionnels de GRH (Ulrich et Brockbank, 2005), cet article offre un nouvel éclairage sur la définition de leurs rôles dans un contexte de fidélisation des travailleurs du savoir. Cette recherche qualitative exploratoire menée au sein de cabinets de conseil en management français fait notamment apparaître le rôle pivot des professionnels RH en tant qu’experts de la fonction RH dans la mise en place d’une telle politique de fidélisation.
Contract Theory in the Spotlight: Oliver Hart and Bengt Holmström, 2016 Nobel Prize Winners
Authors: Fleckinger Pierre , Martimort David
Published: October 2018

Oliver Hart et Bengt Holmström ont reçu le Prix de la Banque de Suède en sciences économiques en mémoire d’Alfred Nobel pour leurs contributions à la Théorie des Contrats. Leurs travaux établissent une Théorie de la Firme et des organisations fondée sur deux piliers. (1) Les parties contractantes exercent des efforts ou accomplissent des investissements qui accroissent la valeur de leur relation, mais ces actions sont parfois cachées, ne peuvent être directement observées, et ne peuvent donc pas être spécifiées dans des contrats mise en œuvre par des cours de justice. (2) Les contrats et les structures de propriétés sont des réponses (imparfaites) à ces frictions informationnelles. Les contributions de ces auteurs ont ainsi conjointement ouvert la voie à un renouvellement complet de la Théorie de la Firme et de la Théorie des Organisations.
Parafoveal Retinal Vessel Density Assessment by Optical Coherence Tomography Angiography in Healthy Eyes
Authors: Arya Malvika , Rebhun Carl B. , Alibhai A. Yasin , Chen Xuejing , Moreira-Neto Carlos , Baumal Caroline R. , Reichel Elias , Witkin Andre J. , Duker Jay S. , Sadda SriniVas R. , Waheed Nadia K.
Published: October 2018

BACKGROUND AND OBJECTIVE:

To assess variability in vessel density (VD) measurements across three optical coherence tomography angiography (OCTA) devices to identify a methodology that offers the least amount of variation in VD, and to assess the effect of averaging of multiple scans on VD variability.

PATIENTS AND METHODS:

Fifteen eyes of eight healthy individuals were imaged consecutively on three OCTA devices. Segmentations at the superficial, deep, and full retinal layers were generated. Repeat scans for each retinal layer were registered and averaged to generate one OCTA image. Two different automated thresholding techniques were used to calculate vessel area density (VAD) from binarized images and vessel skeleton density (VSD) from skeletonized images. Vessel length, a linear measure of the combined lengths of vessels, was calculated. Foveal avascular zone (FAZ) area was measured.

RESULTS:

All three OCTA devices were significantly different (
P
< .0001). This finding remained after averaging images (
P
< .0001). VSD was more repeatable within a device but less reproducible across devices. Conversely, VAD demonstrated less repeatability but greater reproducibility. Differences in VSD between devices were systematic and attributable to differences in resolution. Vessel length, unaffected by resolution, demonstrated no significant differences between the devices (
P
> .107). There was no significant difference in FAZ area across devices (
P
= .51). After averaging images, VD was significantly different from the single images for each device and plexus (
P
< .05) but remained within 1% of the value of a single scan.

CONCLUSIONS:

OCTA devices show variability in VD for healthy individuals. With greater repeatability, VSD appeared useful for following a patient on one device. VAD and vessel length seemed ideal for comparing vessel parameters between OCTA devices. After averaging multiple scans, VSD remained within 1% of a single scan, for which clinical significance remains to be determined. Caution is advised when comparing quantitative analyses across OCTA devices.

[
Ophthalmic Surg Lasers Imaging Retina
. 2018;49:S5–S17.]
Progression to Surgery for Patients With Idiopathic Epiretinal Membranes and Good Vision
Authors: Chen Xuejing , Klein Kendra A. , Shah Chirag P. , Heier Jeffery S.
Published: October 2018

BACKROUND AND OBJECTIVE:

Patients with idiopathic epiretinal membranes (ERMs) and visual acuity of 20/40 or better are often monitored until vision or associated symptoms worsen to affect everyday living. This study looks at the rate of progression to surgery and the characteristics associated with progression.

PATIENTS AND METHODS:

This study was a retrospective, consecutive case series of patients with newly diagnosed idiopathic ERMs who were referred to the Retina Service at the Ophthalmic Consultants of Boston between January 2009 and May 2015 with 20/40 or better visual acuity. Surgical membrane peel was typically offered when vision worsened to 20/50 or beyond and/or when patients could not tolerate symptoms attributable to the ERM. All eligible eyes were categorized by baseline optical coherence tomography (OCT) morphology into normal, mild or incomplete, or complete loss of foveal contour. Visual acuities were averaged through conversion to logMAR. Kaplan-Meier survival curves for progression to surgical membrane peel were calculated. The main outcome measure was progression to surgical intervention.

RESULTS:

The study included 201 eyes from 170 patients; 29.8% had normal, 18.9% had mild loss, and 51.2% had complete loss of foveal contour on baseline OCT. Overall, 13% of eyes progressed to surgery at 7 years. However, only 5% of eyes with normal foveal contour progressed to surgery by 5.5 years, whereas 17% with incomplete and 16% with complete loss of foveal contour progressed to surgery at 6 and 7 years, respectively. Eyes with worse foveal contours progressed to surgery more rapidly.

CONCLUSION:

A minority of patients with newly diagnosed ERMs who did not need surgical intervention progressed to needing surgery at 7 years with the rate and speed of progression dependent on baseline OCT morphology. These statistics can be useful in counseling patients who are deciding between watchful waiting and surgical intervention.

[
Ophthalmic Surg Lasers Imaging Retina
. 2018;49:S18–S22.]
Les Juifs de Rouen au Moyen Âge
Authors: Golb Norman
Published: October 2018

Il a fallu l’érudition, l’ingéniosité et la persévérance d’un grand maître de la paléographie et de la recherche historique tel que le professeur Norman Golb, pour situer Rouen sur le plan de l’histoire juive. M. Golb a pu découvrir et rassembler un vaste ensemble de textes concernant la vie culturelle, communale et économique du Rouen juif du xie au xive siècles. Il a insufflé une nouvelle vie à ces documents par ses savants commentaires. Ses efforts ont eu pour récompense deux événements inattendus : la découverte d’une grande maison juive d’étude et de dévotion au cours de fouilles archéologiques et l’identification d’un livre de prières illustré qui suit le rite pratiqué à Rouen, le Grand Mahazor conservé au Musée juif d’Amsterdam...

La totalité de ces découvertes est enfin présentée dans ce livre à tous ceux qu’intéresse l’histoire fascinante des juifs de la France médiévale.
La création du DEA « Migrations, Espaces et Sociétés » : extraits d’un entretien réalisé auprès de Gildas Simon
Authors: Simon Gildas , Lassailly-Jacob Véronique , Dubus Gilles
Published: October 2018

Créé en 1991, le DEA « Migrations, Espaces et Sociétés » est le premier diplôme de ce niveau dédié en France à l’étude des migrations internationales. Son fondateur, Gildas Simon, est alors professeur de géographie à l’Université de Poitiers. Il avait déjà fondé le laboratoire Migrinter et la Revue Européenne des Migrations Internationales (REMI). Dans cet entretien, il apporte un éclairage très complet sur les difficultés et les satisfactions de cette passionnante expérience pédagogique.
Les migrations dans la presse quotidienne en classe de Quatrième
Authors: Maridet-Tjon-A-Tai Christel , Dumont Antoine
Published: October 2018

Cet article présente l'expérience d'un enseignement de la migration internationale en classe de 4e. Mené par un professeur d'histoire-géographie et un professeur documentaliste. Cet enseignement s'est déroulé pendant la « Semaine de la presse » du 20 au 25 mars 2017 en salle de classe et au centre de documentation et d'information (CDI) du collège Frida Kahlo de Pontchâteau.
BIM Macro Adoption Study
Authors: McAuley Barry , Hore Alan V. , West Roger P.
Published: October 2018

Since 2016, the BIM Innovation Capability Programme (BICP) has captured the capability of the Irish construction industry and the higher education institutes response to the increased requirement for BIM on construction and engineering projects. One of the primary responsibilities of the BICP research team was to collate data to assist the National BIM Council of Ireland in the formulation of a National BIM Roadmap. To assist the council with this task, the BICP research team applied five macro BIM maturity conceptual models to assess Ireland's BIM maturity. The application of the models has helped identify the key policies' outputs and the macro maturity components that were used to identify deliverables within the now-published Irish roadmap. The results from the models were further utilised to develop a managing-complex-change matrix. The matrix has helped identify the necessary ingredients for a successful digital transformation programme for Ireland's construction industry for the period 2018-2021. The results from both studies have provided crucial information in highlighting areas that will need to be addressed if Ireland is to continue its current momentum in promoting the use of BIM within the Irish construction industry.
Filtration of Terrorism-Related Texts in the E-Government Environment
Authors: Alguliyev Rasim M. , Aliguliyev Ramiz M. , Niftaliyeva Gunay Y.
Published: October 2018

E-government expresses the process of utilizing advanced information and communication technologies (ICT) to automate internal activities of government agencies and their external relations with citizens and businesses. All these interactions provide better, faster and more secure public services. In this article, a method for the detection of terrorism-related activities in the e-government environment has been suggested. In the proposed method, terrorism-related activities are defined based on the similarity between the users' opinions and the vocabulary database created linked to terrorism.
Ecological Impact of Green Computing Using Graphical Processing Units in Molecular Dynamics Simulations
Authors: Marquetti Izabele , Rodrigues Jhonatam , Desai Salil S.
Published: October 2018

Molecular dynamics (MD) models require comprehensive computational power to simulate nanoscale phenomena. Traditionally, central processing unit (CPU) clusters have been the standard method of performing these numerically intensive computations. This article investigates the use of graphical processing units (GPUs) to implement large-scale MD models for exploring nanofluidic-substrate interactions. MD models of water nanodroplets over flat silicon substrate are tracked wherein the simulation attains a steady state computational performance. Different classes of GPU units from NVIDIA (C2050, K20, and K40) are evaluated for energy efficiency performance with respect to three green computing measures: simulation completion time, power consumption, and CO2 emissions. The CPU+K40 configuration displayed the lowest energy consumption profile for all the measures. This research demonstrates the use of energy efficient graphical computing versus traditional CPU computing for high-performance molecular dynamics simulations.
A Reliable Data Provenance and Privacy Preservation Architecture for Business-Driven Cyber-Physical Systems Using Blockchain
Authors: Liang Xueping , Shetty Sachin , Tosh Deepak K. , Zhao Juan , Li Danyi , Liu Jihong
Published: October 2018

Cyber-physical systems (CPS) including power systems, transportation, industrial control systems, etc. support both advanced control and communications among system components. Frequent data operations could introduce random failures and malicious attacks or even bring down the whole system. The dependency on a central authority increases the risk of single point of failure. To establish an immutable data provenance scheme for CPS, the authors adopt blockchain and propose a decentralized architecture to assure data integrity. In business-driven CPS, end users are required to share their personal information with multiple third parties. To prevent data leakage and preserve user privacy, the authors isolate and feed different information retrieval requests using tokens specifically generated for each type of request. Providing both traceability of data operations, and unlinkability of end user activities, a robust blockchain-based CPS is prototyped. Evaluation indicates the architecture is capable of assured data provenance validation and user privacy preservation at a low overhead.
Role of Smartphone in Women Empowerment
Authors: Goel Shashank , Gupta Prateek
Published: October 2018

The technological development in the field of electronics and telecommunication has brought about a revolution in the life of people. The technical products so developed have brought about a noticeable change for the better in the personal and professional lives of people by enhancing their capabilities and empowering them to enrich their life and life experiences. In the Indian scenario where the female community was not traditionally empowered, the acceptance of smartphones and connecting to technology through the smartphone has empowered Indian women, whether working or non-working. This article is an effort to highlight the role played by smartphone in empowering women and enriching their lives. The findings of the survey study are presented in the article.
Design of Knowledge Based Analytical Model for Organizational Excellence
Authors: Pathak Sonal , Agrawal Rashmi
Published: October 2018

Knowledge is the key resource which always contributes to an improved performance of an organization if it is properly harnessed and leveraged. The administration of assets related to intellect has become an essential managerial task. An ample variety of organizations have commenced initiative to contribute their best ideas on knowledge management. This article focuses this progression in more detailed approach with a description of its basic elements. Organizations have always faced a challenge to the acceptance of knowledge management in their firms. The authors of the article suggest a model for knowledge management (KM) from system perspective. This article includes an overview of knowledge management components and the proposal of an analytical model which includes all the factors required for an excellent knowledge-based system. As knowledge is generally disseminated among almost all systems in any organization, the proposed research model supports the evaluation of knowledge within the organization, using both subjective and objective dimensions which are a challenge point out in many of the existing research studies.
Assessing Travel Websites Based on Service Quality Attributes Under Intuitionistic Environment
Authors: Tandon Abhishek , Sharma Himanshu , Aggarwal Anu Gupta
Published: October 2018

Digitalization has increased the importance of online marketing as compared to its traditional counterpart. Over the years, the number of customers using online portals for booking tickets and hotel rooms via online travel agencies (OTAs) has shown an increasing trend. This may be due to the discounts and add-on services provided by OTA retailers. Quality of the website attracts customers to make a visit and henceforth a purchase. Since the satisfaction of online customers impacts the success of a website, a model is proposed to rank OTA websites on the basis of factors that affect website quality. The website quality criteria considered are trust, ease of use, tangibility, ease of booking, navigation, customization, system availability, responsiveness, and interactivity of ewom (electronic word-of-mouth) systems. The model combines the multi criteria group decision making (MCGDM) techniques of intuitionistic fuzzy analytic hierarchy process (IFAHP) and intuitionistic fuzzy preference ranking order method for evaluation enrichment (IFPROMETHEE). A case study is provided to validate the model. The results of the case study show the higher ranking given to the OTA website with most efficient service quality attributes.
Combining Features of Metal Oxide Nanoparticles
Authors: Kuz'min Victor E , Ognichenko Liudmila N , Sizochenko Natalia , Chapkin Valery A. , Stelmakh Sergii I. , Shyrykalova Angela O. , Leszczynski Jerzy
Published: October 2018

A poor applicability of classic 2D descriptors for representation of metal oxide nanoparticles is briefly discussed. The combination of 1D descriptors with previously calculated size-dependent descriptors is utilized to represent the structural features of nanoparticles in QSAR modeling. For this purpose, descriptors based on the fundamental characteristics of atoms (nuclear charge, oxidation level, electronegativity, ionic radius, ionic refraction etc.) were combined with those derived from structural formula (doublets –A2, AB, …; triplets – A3, A2B, ABC, … etc.) and “liquid drop model” derived size-dependent parameters. Nano-QSAR models are developed for cytotoxicity of metal oxide nanoparticles against E. coli and HaCaT cells. Two developed nano-QSAR models are discussed in terms of cluster analysis.
Economic Decision Making and Risk Management
Authors: Galli Brian J.
Published: October 2018

The definition of long-term objectives in corporate management as well as means of achieving them is often associated with uncertainty. The reason for this is apparent: managers in corporate entities cannot predict all circumstances, whether positive or negative, that is likely to occur in the future. Management during the decision-making process must be able to make informed decisions given the existence of insecurities and uncertainties in the course of business operations. Management must, therefore, take into account the risks that might occur in the future. As a result, this article aims at discussing the risks affecting corporate entities. The paper also defines and analyzes the risks, thus explaining how business entities can tackle them through making informed business decisions.
The Indicators of the Corporate Social Responsibility
Authors: Asdiou Abdelkarim , Mokhtari Bouchaib
Published: October 2018

The objective of the present paper is to propose an explanatory model identifying the determinants of the recourse to the CSR indicators and spotting the real motivation of companies to use them: for efficiency or a concern for legitimacy towards stakeholders? To carry out this research, the researchers have chosen a qualitative methodology by analysing eight cases of companies labelled CSR. The researchers try to show that the use of CSR indicators obeys to two different but complementary theoretical frameworks. The contingent theory explains the architecture of management control systems according to the “technical environment” of the company that seeks greater efficiency. Whereas in the neo-institutional perspective, the use of CSR indicators can be explained by the “social and institutional environment” in which the enterprise, seeking greater legitimacy, evolves. Through the combination of these two theoretical frameworks, this paper provides an academic basis for future studies which envisage testing the model through a quantitative study.
Structured Data Facilitate Learning Design for Energetic Transition
Authors: Ahamer Gilbert
Published: October 2018

For the immense but necessary task of global climate protection, avenues for action should be designed to consider the intrinsically autopoietic and self-guided behaviour of global power politics. Thus, pragmatic approaches may provide solutions and educational strategies have to prepare global society. This article proposes a “design of social processes” as a lasting global educational strategy that may enhance the societal and institutional transition to a non-fossil future, as called for by the recent Paris climate conference. In a path-dependent world, self-adaptive learning is needed, given the wide distribution of learners' profiles – and their interests. Sound education is identified as the genesis of structures that lead to changes in action. Three principles for such a design of social processes are proposed: rhythmisation, multi-perspectivism, and underdeterminism, as found in game play.
Spectrophotometric Study of Complex Compounds of Polyacrylate and Polymethacrylate of Guanidine, and also of Composites on their Basis with Fe (II) Ions
Authors: Isupova Zalina Yu. , Zhansitov Azamat A. , Khashirova S.S. , Khashirova S.Yu.
Published: October 2018

New complex compounds of polyacrylate and polymethacrylate guanidine and composites based on them with Fe (II) ions were studied by the spectrophotometric method. The optimal conditions for complexation were studied. Thus, it was revealed that metal-complex polymers are formed at λ = 500 nm for PAG and λ = 510 nm for PMAG. The formation of complexes at pH = 6-7 was also proved.
Investigation of the Influence of the Catalyst on the Kinetics of the Synthesis of Polyesters PET and PBT
Authors: Mamkhegov Rustam M. , Murzakanova Marina M. , Tsurova Ashat T. , Khashirova S.Yu.
Published: October 2018

A series of syntheses of polyesters PET and PBT in the presence of an industrial catalyst of an antimony oxide, a titanium catalyst and various catalytic systems based on it was carried out. The catalytic activity of these systems was investigated and their effect on the kinetics of the synthesis process was revealed.
Development of Composite Materials for 3d Printing on the Basis of Polyphenylenesulfone
Authors: Slonov Azamat L. , Zhansitov Azamat A. , Khakulova Diana M. , Kurdanova Zh.I. , Musov Ismel V. , Khashirova S.Yu.
Published: October 2018

The influence of talc and various polymeric additives on the basic mechanical properties of polyphenylenesulfone was investigated. It was found out that with the increase in the filler concentration there is an increase in stiffness, tensile strength and a decrease in the plasticity of the polyphenylenesulfone. While studying of polymer-polymer composites based on polyphenylenesulfone, high efficiency of polycarbonate as a modifier of impact strength was revealed. An effective method for producing a composite with a high impact strength and a modulus of elasticity has beendeveloped; it is based on the features of the distribution of the filler in the binary system polyphenylenesulfone – polycarbonate. The concentration of the filler in the polycarbonate phaseleads to low values of impactstrength, while its concentration in the phase of polyphenylenesulfone, followed by the introduction of polycarbonate leads to the formation of a high impact and high modulus composite. The samples obtained by 3D printing have high mechanical characteristics.
Mechanical Properties of Samples of Polyphenylene Sulfone Obtained by the 3D-Printing Method
Authors: Slonov Azamat L. , Khashirov Azamat A. , Zhansitov Azamat A. , Rzhevskaya Elena V. , Musov Ismel V. , Khashirova S.Yu.
Published: October 2018

The effect of process conditions on the 3D-print to physical-mechanical properties of products made of polyphenylene sulfone obtained by layering the molten polymer filament (FDM) was investigated. The dependence of physical-mechanical properties of polyphenylene sulfone on the following printing parameters: angle of orientation of yarn laying (bitmaps), the air gap between the circuits and rasters, the air gap between the raster, raster width was revealed. It is shown that the best physical and mechanical characteristics of polyphenylene sulfone close to the injection, are achieved by printing in a longitudinal orientation of the filaments with minimum width and negative clearances between them.
Methods for the Synthesis of Polyethereketone
Authors: Shakhmurzova K.T. , Kurdanova Zh.I. , Baikaziev Arthur E. , Teunova Karina Kh. , Zhansitov Azamat A. , Khashirova S.Yu.
Published: October 2018

The data on the methods for the preparation of polyetherketones by electrophilic and nucleophilic methods are considered and generalized. It is shown that polyetherketones by electrophilic substitution are carried out as homopolycondensation aromatic monocarboxylic acids and their halides and polycondensation of polynuclear aromatic hydrocarbons with aromatic dicarboxylic acids or their halides, and phosgene in organic solvents (1,2-dichloroethane, methylene chloride, nitrobenzene and etc.) in the presence of Ziegler-Natt catalysts. However, this process has not found an industrial application in view of such disadvantages as low yield of the desired product, the formation of a polymer with low molecular weight, synthesis time (15-40 hours), the use of large amounts of catalyst, the complexity of polymer purification of it.
A Carbon Nanotubes Aggregation in Polymer Nanocomposites
Authors: Atlukhanova Louise B. , Kozlov George V.
Published: October 2018

Carbon nanotubes aggregation process in aggregates (bundles) has been studied. This process results in essential reduction of nanocomposites attainable elasticity modulus. The bundles packing density is defined by aggregation expectation time and corresponding carbon nanotube walk dimension up to sticking with a similar nanotube.
The quality of guidelines in non-pharmacological prevention and management of chemotherapy-induced neuropathy: A review
Authors: Salarvand Shahin , Hemati Simin , Adibi Payman , Taleghani Fariba
Published: October 2018

Chemotherapy-induced peripheral neuropathy is a common adverse effect occurring in patients undergoing neurotoxic chemotherapy. However, there is no FDA-approved treatment option for it. Given the importance of clinical practice guidelines in this area, this study aimed to determine the methodological quality of extant CIPN guidelines. The study was done as part of the adaptation process of CIPN related CPGs at Isfahan University of Medical Sciences, Iran. A systematic search of published CPGs about chemotherapy-induced CIPN in which the AGREE II instrument was applied for appraising CPGs of CIPN was performed. In general, amongst all of the AGREE II Instrument’s domains in the evaluated CPGs, the clarity of presentation and stakeholder involvement domains took favorable scores; and other domains obtained unfavorable and relatively favorable scores. The quality of cancer therapy-induced neuropathy CPGs needs to be improved and designing high-quality CPGs must be considered.
Level of awareness and treatment of anxiety and depression during pregnancy in southeast Nigeria
Authors: Sunday Ezeme M. , Okoli Paul C. , Dinwoke Vincent O.
Published: October 2018

Background: Anxiety and depressive disorders are somewhat masked by features of pregnancy; hence many women are ignorant of them and are untreated.Aim: To determine the level of awareness and treatment of anxiety and depression in pregnancy.Setting: The study was carried out at the antenatal clinic of Enugu State University Teaching Hospital, Enugu, Nigeria.Method: This was a cross-sectional and descriptive study of 200 pregnant women in consecutive attendance of the antenatal clinic using the Hospital Anxiety and Depression Scale (HADS) and a sociodemographic questionnaire.Results: Of the participants, 23.5% had anxiety and/or depression, 7.5% of them were aware of their condition and only 0.5% of all the participants or 6.7% of those who were aware of their problem received treatment.Conclusion: Anxiety and depression are prevalent among pregnant women. Because of overlap of symptoms of anxiety and depression with those of pregnancy, the awareness is very low; hence many of them suffer immensely without treatment.
An Inverse Problem for the Magnetic Schrödinger Equation in Infinite Cylindrical Domains
Authors: Bellassoued Mourad , Kian Yavar , Soccorsi Éric
Published: October 2018

We study the inverse problem of determining the magnetic field and the electric potential entering the Schrödinger equation in an infinite 3D cylindrical domain, by the Dirichletto–Neumann map. The cylindrical domain we consider is a closed waveguide in the sense that the cross section is a bounded domain of the plane. We prove that knowledge of the Dirichlet-to-Neumann map determines uniquely and even Hölder-stably the magnetic field and the electric potential. Moreover, if the maximal strength of both the magnetic field and the electric potential is attained in a fixed bounded subset of the domain, we extend the above results by taking only finitely extended boundary observations of the solution.
Lecture Notes On Differential Calculus on $\sf {RCD}$ Spaces
Authors: Gigli Nicola
Published: October 2018

These notes are intended to be an invitation to differential calculus on

\sf {RCD}

spaces. We start by introducing the concept of an "

L^2

-normed

L^\infty

-module" and show how it can be used to develop a first-order (Sobolev) differential calculus on general metric measure spaces. In the second part of the manuscript we see how, on spaces with Ricci curvature bounded from below, a second-order calculus can also be built: objects like the Hessian, covariant and exterior derivatives and Ricci curvature are all well defined and have many of the properties they have in the smooth category.