bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of Metallicity on the Leavitt Law from Geometrical Distances of Milky Way and Magellanic Cloud Cepheids
Authors: Breuval Louise , Kervella Pierre , Wielgórski Piotr , Gieren Wolfgang , Graczyk Dariusz , Trahin Boris , Pietrzyński Grzegorz , Arenou Frédéric , Javanmardi Behnam , Zgirski Bartłomiej
Published: May 2021

The Cepheid period–luminosity (PL) relation is the key tool for measuring astronomical distances and for establishing the extragalactic distance scale. In particular, the local value of the Hubble constant (H
0) strongly depends on Cepheid distance measurements. The recent Gaia Data Releases and other parallax measurements from the Hubble Space Telescope (HST) already enabled us to improve the accuracy of the slope (α) and intercept (β) of the PL relation. However, the dependence of this law on metallicity is still largely debated. In this paper, we combine three samples of Cepheids in the Milky Way (MW), the Large Magellanic Cloud (LMC), and the Small Magellanic Cloud (SMC) in order to derive the metallicity term (hereafter γ) of the PL relation. The recent publication of extremely precise LMC and SMC distances based on late-type detached eclipsing binary systems provides a solid anchor for the Magellanic Clouds. In the MW, we adopt Cepheid parallaxes from the early third Gaia Data Release. We derive the metallicity effect in V, I, J, H, K

S
, W

VI
, and W

JK
. In the K

S
band we report a metallicity effect of −0.221 ± 0.051 mag dex−1, the negative sign meaning that more metal-rich Cepheids are intrinsically brighter than their more metal-poor counterparts of the same pulsation period.
Morphological Types of DM Halos in Milky Way-like Galaxies in the TNG50 Simulation: Simple, Twisted, or Stretched
Authors: Emami Razieh , Genel Shy , Hernquist Lars , Alcock Charles , Bose Sownak , Weinberger Rainer , Vogelsberger Mark , Marinacci Federico , Loeb Abraham , Torrey Paul , Forbes John C.
Published: May 2021

We present a comprehensive analysis of the shape of dark matter (DM) halos in a sample of 25 Milky Way-like galaxies in TNG50 simulation. Using an enclosed volume iterative method, we infer an oblate-to-triaxial shape for the DM halo with median T ≃ 0.24. We group DM halos into three different categories. Simple halos (32% of the population) establish principal axes whose ordering in magnitude does not change with radius and whose orientations are almost fixed throughout the halo. Twisted halos (32%) experience levels of gradual rotations throughout their radial profiles. Finally, stretched halos (36%) demonstrate a stretching in the lengths of their principal axes where the ordering of different eigenvalues changes with radius. Subsequently, the halo experiences a “rotation” of ∼90° where the stretching occurs. Visualizing the 3D ellipsoid of each halo, for the first time, we report signs of a reorienting ellipsoid in twisted and stretched halos. We examine the impact of baryonic physics on DM halo shape through a comparison to dark matter only (DMO) simulations. This suggests a triaxial (prolate) halo. We analyze the impacts of substructure on DM halo shape in both hydrodynamical and DMO simulations and confirm that they are subdominant. We study the distribution of satellites in our sample. In simple and twisted halos, the angle between satellites’ angular momentum and the galaxy’s angular momentum grows with radius. However, stretched halos show a flat distribution of angles. Overlaying our theoretical outcome on the observational results presented in the literature establishes a fair agreement.
Photometric Classifications of Evolved Massive Stars: Preparing for the Era of Webb and Roman with Machine Learning
Authors: Dorn-Wallenstein Trevor Z. , Davenport James R. A. , Huppenkothen Daniela , Levesque Emily M.
Published: May 2021

In the coming years, next-generation space-based infrared observatories will significantly increase our samples of rare massive stars, representing a tremendous opportunity to leverage modern statistical tools and methods to test massive stellar evolution in entirely new environments. Such work is only possible if the observed objects can be reliably classified. Spectroscopic observations are infeasible with more distant targets, and so we wish to determine whether machine-learning methods can classify massive stars using broadband infrared photometry. We find that a Support Vector Machine classifier is capable of coarsely classifying massive stars with labels corresponding to hot, cool, and emission-line stars with high accuracy, while rejecting contaminating low-mass giants. Remarkably, 76% of emission-line stars can be recovered without the need for narrowband or spectroscopic observations. We classify a sample of ∼2500 objects with no existing labels and identify 14 candidate emission-line objects. Unfortunately, despite the high precision of the photometry in our sample, the heterogeneous origins of the labels for the stars in our sample severely inhibit our classifier from distinguishing classes of stars with more granularity. Ultimately, no large and homogeneously labeled sample of massive stars currently exists. Without significant efforts to robustly classify evolved massive stars—which is feasible given existing data from large all-sky spectroscopic surveys—shortcomings in the labeling of existing data sets will hinder efforts to leverage the next generation of space observatories.
DNA barcodes of birds from northern Colombia
Authors: Pulgarín-R Paulo , Olivera-Angel Martha , Ortíz Luisa , Nanclares Duván , Velásquez-Restrepo Sara , Díaz-Nieto Juan
Published: May 2021

DNA barcode datasets are a useful tool for conservation and aid in taxonomic identification, particularly in megadiverse tropical countries seeking to document and describe its biota, which is dropping at an alarming rate during recent decades. Here we report the barcodes for several low elevation bird species from northern Colombia with the goal to provide tools for species identification in this region of South America. We blood-sampled birds in a lowland tropical forest with various degrees of intervention using standard 3 × 12 m mist-nets. We extracted DNA and sequenced the COI barcode gene using standard primers and laboratory methods. We obtained 26 COI sequences from 18 species, 10 families and three orders and found that barcodes largely matched (but not always) phenotypic identification (> 90%) and they also facilitated the identification of several challenging passerine species. Despite our reduced sampling, our study represents the first attempt to document COI barcodes for birds (from blood samples) in this part of Colombia, which fills a considerable gap of sampling in this part of South America.
Hemithea aestivaria (Hübner) (Lepidoptera: Geometridae), a Palaearctic moth, new to eastern North America
Authors: Schmidt Christian , Anctil Alexandre
Published: May 2021

The geometrid mothHemithea aestivaria(Hübner, 1789) was introduced from Europe to North America, first being detected in British Columbia in 1973. Until 2019, its North American range was limited to a restricted area of the Pacific Northwest. Here, we report on the first records ofH. aestivariafor eastern North America from three widely separated urban centres in eastern Canada during 2019-2020.
A checklist of spiders from Yongxing Island, South China Sea, with taxonomic notes on four species of goblin spiders
Authors: Tang Jiaxin , Liang Wei , Shi Haitao , Gao Caixia , Li Shuqiang , Zheng Guo
Published: May 2021

Yongxing Island (about 1.85 km2) is the largest island of the Xisha Islands. It is located in the Western South China Sea and belongs to the tropical ocean monsoon climate zone. Yongxing Island is quite rich in biological resources, for example, plants and birds which have been well documented. However, there are limited reports on spider resources in Yongxing Island.

A preliminary checklist of spiders of the Yongxing Island is provided, based on a short-term study undertaken in January 2008. A total of 23 species, belonging to 21 genera and 11 families, were recorded from the area, which forms baseline information of spiders of the Yongxing Island. Amongst these, Oonopidae, Pholcidae, Araneidae and Salticidae were found to have more species in the area. Brignolia parumpunctata (Simon, 1893), Opopaea apicalis (Simon, 1893), Opopaea deserticola Simon, 1891 and Xyphinus baehrae Kranz-Baltensperger, 2014 were firstly reported from China, for which we provide taxonomic description in this paper.
Corrigenda: Stygobromus bakeri, a new species of groundwater amphipod (Amphipoda, Crangonyctidae) associated with the Trinity and Edwards aquifers of central Texas, USA. Subterranean Biology 38: 19–45. https://doi: 10.3897/subtbiol.38.61787
Authors: Gibson Randy , Hutchins Benjamin T. , Krejca Jean K. , Diaz Peter H. , Sprouse Peter S.
Published: May 2021

N/A
L’épidémie de Covid-19 révèle et aggrave les inégalités
Authors: Théry Hervé
Published: May 2021

L’épidémie de Covid-19 a été un traumatisme majeur pour le Brésil et ce sont les plus pauvres qui en ont le plus souffert, car il leur a été difficile d’observer les règles d’hygiène dans leurs logements précaires, et parce que la nécessité pressante de sortir pour gagner de quoi se nourrir et nourrir leur famille les a empêchés de respecter celles du confinement. L’épidémie n’a évidemment pas créé ces inégalités, elle les a seulement mises tragiquement en évidence, et aggravées. Pour en mesurer l’impact, l’article mesure d’abord l’ampleur des inégalités préexistantes, à plusieurs échelles, avant de chercher à déterminer quels sont les facteurs associés à l’épidémie, là aussi à plusieurs échelles. On peut alors vérifier si l’on a affaire à des inégalités conjoncturelles ou à des inégalités structurelles renforcées par ce dramatique épisode.
De la rencontre à la place
Authors: Terpereau Stéphane , Pföhl Valérie , Puybareau Antoine , Elatré Lydie
Published: May 2021

Des professionnels exerçant en hôpitaux de jour se penchent sur leurs pratiques et essayent d’en faire ressortir les points forts. L’hôpital de jour y est décrit comme espace intermédiaire mais aussi lieu d’individualisation et d’autonomisation. Les pratiques sont abordées ici à travers le travail de différents acteurs de l’équipe pluriprofessionnelle : infirmier(e)s, psychomotricien(ne)s, psychologues.
Sublimation de l’agressivité à l’adolescence : l’exemple de la Psychoboxe
Authors: Raufast Lionel
Published: May 2021

L’article présente l’accompagnement d’un adolescent délinquant placé en Centre Éducatif Fermé à la suite de plusieurs faits de violence. La méthode est atypique. Elle a consisté à proposer des séances de Psychoboxe. Le travail de sublimation a ainsi permis de décaler l’objectif de la mort réelle de l’autre au profit d’un travail commun de symbolisation. Les processus sublimatoires ont aussi soutenu, grâce à leurs dimensions d’esthésie affective, la nécessaire revitalisation des scènes expressives du corps de l’adolescent.
Actualité de la figure du zombie : temps et mélancolie chez les adolescents reclus en panne de symbolisation
Authors: Muths Stéphane
Published: May 2021

Les nouvelles technologies situent les adolescents dans des formes de temporalités vectorisées par un idéal d’immédiateté. Les productions culturelles témoignent des idéaux et de la symptomatologie d’une époque mettant à l’épreuve les adolescents reclus en panne de symbolisation. Outre les figures de métamorphoses propres au pubertaire, la figure du zombie tend à proliférer. Notre propos interroge la figure du zombie à partir d’éléments de la clinique d’adolescents reclus révélant un temps de suspension typique d’une stase mélancolique propre à l’actualité du malaise dans la culture.
The Final Diagnosis: Retinoblastoma or Pseudoretinoblastoma
Authors: Mirzayev Ibadulla , Gündüz Ahmet Kaan , Biçer Özlem , Tarlan Berçin
Published: May 2021

Purpose:

To review the authors' experience in the diagnosis of retinoblastoma and to explore the frequency of intraocular conditions that mimic this malignancy according to patient age at presentation.

Methods:

This was a retrospective observational study including 549 patients (769 eyes) who were referred for confirmation and/or management of retinoblastoma between October 1998 and June 2019 at a single tertiary center. A detailed ocular examination was done by the same ocular oncologist under general anesthesia for every patient.

Results:

Of 549 patients referred for diagnostic confirmation or management of retinoblastoma, 393 (71.6%) patients were found to have retinoblastoma and 156 (28.4%) patients received the diagnosis of pseudoretinoblastoma. The mean patient age at presentation was 52.1 months, ranging from 1 to 276 months. The most common diagnoses among patients with pseudoretinoblastoma younger than 1 year were persistent fetal vasculature (PFV) (n = 19; 28.8%), Coats disease (n = 7; 10.6%), chorioretinal coloboma (n = 4; 6.1%), retinal dysplasia (n = 4; 6.1%), and retinal detachment (n = 4; 6.1%). In patients with pseudoretinoblastoma who were 1 to 5 years old, the most common diagnoses were Coats disease (n = 10; 25.6%), PFV (n = 7; 17.9%), and optic disc hypoplasia (n = 3; 7.7%). Patients older than 5 years were most likely to have Coats disease (n = 8; 15.7%), optic disc drusen (n = 5; 9.8%), retinopathy of prematurity (n = 4; 7.8%), and combined hamartoma (n = 4; 7.8%).

Conclusions:

This study shows that 28.4% of patients referred for suspicion or management of retinoblastoma were classified as having pseudoretinoblastoma. The most common conditions causing diagnostic confusion with retinoblastoma included PFV and Coats disease, similar to previous publications from both high-and low-income countries.

[
J Pediatr Ophthalmol Strabismus
. 2021;58(3):161–167.]
La reutilización de antigüedades en al-Ándalus: ¿recurso o discurso?
Authors: Elices Ocón Jorge
Published: May 2021

En el presente artículo se estudia la reutilización de antigüedades en al-Ándalus durante los siglos VIII-X. Se propone prestar atención al valor dado a los materiales a través de las fuentes escritas y arqueológicas, poniendo de manifiesto la existencia de una primera etapa donde la reutilización afecta a elementos arquitectónicos decorativos con un valor constructivo y decorativo, empleados además de forma masiva en los edificios. No obstante, a finales del siglo IX se detecta un cambio. Las antigüedades reutilizadas son singulares, como sarcófagos o estatuas, consideradas “maravillas” y capaces de evocar una reflexión sobre el pasado. Una fetua de finales del siglo IX ilustra acerca de este cambio y evidencia el control de los Omeyas sobre estas piezas, cuyo testimonio más destacado es el conjunto de antigüedades de Madīnat al-Zahrā’.
Las unidades de Yunquera y Saucillo en la parte occidental de la Zona Interna Bética: significado regional
Authors: Sanz de Galdeano Carlos
Published: May 2021

Conocer mejor las unidades tectónicas occidentales alpujárrides es importante para la comprensión de la evolución de las Béticas, particularmente de su frente orogénico alpino. Por ello se analiza la estratigrafía y el contexto geológico de la unidad de Yunquera. Esta unidad es una escama tectónica cabalgada por el Complejo Alpujárride del que forma parte. A su vez cabalga a la Dorsal y esta lo hace al Subbético. Por este cabalgamiento, la base de la unidad se encuentra muy biselada de manera que en su parte norte corresponde a niveles estratigráficos altos, conservándose otros más bajos al sur. Parte de ese cepillamiento basal pudo también producirse durante el corte oblicuo que sufrió la Dorsal que en ese sector quedó localmente laminada por completo. Todo ello se produjo en el contexto del progresivo avance de la Zona Interna hacia el oeste, el cual no se hizo de forma homogénea, sino según segmentos, con mayor desplazamiento de los más meridionales. Aunque estas deformaciones pueden separarse en varias etapas, realmente se produjeron en un cuadro de evolución continua que abarcó desde finales del Oligoceno al Burdigaliense. Por sus características litológicas, la unidad de Yunquera formó originalmente parte de la unidad alpujárride superior, generalmente conocida como unidad de Jubrique o Los Reales (este nombre se usa cuando se considera también a las peridotitas situadas en su base), cuyos afloramientos comprenden prácticamente todo el sector occidental de dicho complejo. Esta correlación de unidades permite una mejor comprensión de la estructura y evolución geológica del complejo Alpujárride. Por su parte, la unidad del Saucillo (que se encuentra afectada por una zona de falla formada durante el estiramiento de la Dorsal, en la que también hay restos tectónicos de otras unidades) es claramente relacionable con las llamadas Unidades Intermedias, tectónicamente situadas entre los complejos Alpujárride y Maláguide.
Non-Traditional Labs and Lab Network Initiatives: A Review
Authors: Esposito Giovanni , Mezzogori Davide , Reverberi Davide , Romagnoli Giovanni , Ustenko Maria , Zammori Francesco
Published: May 2021

Lab-based education has always played an important role in teaching students. Making remote and virtual labs communicate with one another by creating networks of labs can enhance the traditional way of learning as well as reduce the costs of implementing and using labs. This paper provides a review of the literature on non-traditional labs and lab network initiatives up to 2020. With the term ‘non-traditional labs’, we mean virtual, remote and hybrid labs, whereas with the term ‘lab network’, we indicate a set of two or more cooperating labs typically connected through the internet. In this study, we used a recent and comprehensive framework for data collection, organization and analysis to gather information on 40 non-traditional labs and lab network initiatives. Thanks to this framework, the outcomes of our work highlight interesting trends of lab-based education, which pertain to didactical, organizational and technical aspects.
Like a Cog in a Machine
Authors: Mahmoud Ali B.
Published: May 2021

Similar to its sisters, the Fourth Industrial Revolution (Industry 4.0) has sparked varying sentiments and views regarding the ethicality and effectiveness of employing artificial intelligence (AI) tools in human resource management (HRM) in a way that triggers the need for a synthesis of current published work on the different views in that respect. This chapter presents an attempt to engage the different cogs with each other so the millstone will go around, and an updated understanding of AI-powered HRM from different angles is provided. This work reviews the main concepts revolving around AI and Industry 4.0. Also, it offers an up-to-date investigation of AI uses in HRM (e.g., People Analytics) and what risks or ethical concerns are being argued in contemporary discourse.
Media and Content in an Active Economy
Authors: Bradish Cheri L. , Burton Nick
Published: May 2021

A vibrant active economy is dependent upon many factors to thrive and be successful. At the very core of this, is centralized communication—and links to myriad communication networks and tools—to keep the community engaged. Media and content, from traditional to digital communication, and its content through other outlets are key when engaging individual citizens and key stakeholders to share vital information as well as provide a means of storytelling. And, as media has been democratized by a variety of social platforms (such as Facebook, Twitter, etc.), the distinction and diversity of voices active via media and content in an active economy is significant. This chapter reviews the concepts of media and content for an active economy including an historical overview of media, digital transformation, related trends, and includes relevant case studies for discussion and critical analysis.
Dynamic Route Planning (DRP) Module for Distribution Business
Authors: Dayaratne Darshana T. , Gunasekara Sachini
Published: May 2021

In the Sri Lankan logistics industry, delivery route planning is a very important and critical task. It requires many skilled labours and is time-consuming as well. The project aims to develop a Dynamic Route Planning (DRP) Algorithm to computerize the task and make it fast and efficient. The system comprises many features, including identifying the fastest route to deliver goods to all the given delivery locations (drop points). It also captures the cargo volume, vehicle capacity and provides an indication of the number of vehicles required to complete the full delivery by running a calculation using the volume of the cargo and truck capacity. The biggest challenge faced in developing the algorithm is calculating the distance among the delivery locations electronically. There are many electronic maps found online but each one has its own drawbacks. Most of the maps do not get an update very frequently, and changes on roads are not available. There are some maps, which are restricted to use in certain countries and not allowed to use worldwide. The algorithm and application what this project expecting to develop must be available to use in any country. Finally, we derived to a point where we can use Google maps which has minimal negative points. This project uses Google Maps as a tool when it is calculating the distances between two points, and inbuilt intelligence of Google Maps to identify the fastest route between two delivery points (drop points). At the beginning of the development of the algorithm, knowledge extracted by studying Dijkstra’s Algorithm, which is used in Google Maps, supported to identify the direction of experiments. There are certain limitations in the use of Google Map APIs. As well as the number of hits made per day in the free version is limited and identifying different graded roads such as “A” & “B” are some of them. Users can upload the details of the cargo and delivery location (drop point) details to the application. The application will then generate the fastest route in a report form or plotted in the map.
Factors Affecting for the Service Quality of Three-Wheeler Transportation in Kurunegala City
Authors: Nuwarapaksha S.M. , Kankanamge C.A. , Jayarathna D.G.N.D.
Published: May 2021

Public Transport service is vital to the wellbeing of any country. Three-wheeler transportation service in Sri Lanka has become poor in quality and unreliable due to the expectations of passengers. Therefore, the scope of this study was limited three-wheeler transportation in Kurunegala city. Quality service is a procedure of total evaluation of service or product. If the service provider is separate from the service it offers, then the passengers regularly get attached to the service quality. Transportation service in Sri Lanka is in poor quality because it does not meet the passenger expectations and needs. Quality three-wheeler service implementation in urban areas is a main concern to regulators as well as to the passengers.Quantitative research approach has been conducted to analyse data in the study. Therefore, 306 passengers have been used as sample population and then exploratory factor analysis has been used to identify the major quality factors. SPSS version 16.0 has been used to analyse data.There were 19 independent variables taken by referring to past studies. Next, research objectives were identified, nature of service quality dimensions and overall service quality, relationship between individual factors and service quality and significant factors influencing on service quality of three-wheeler transportation in Kurunegala City.Finally, researcher evaluated the overall service quality level of three-wheeler service in Kururnegala city and proposed several solutions to increase the service quality related to three-wheeler transportation. This research also provides some recommendations to develop three-wheeler service in near future and recommendations to make a good quality service to the passengers in order to fulfill the passenger satisfaction about service quality of three-wheeler transportation.
Pilot Study, Antihypertensive Prescription Analysis of Hypertensive Patients at Community Pharmacy Outlet; Sri Lankan Perspectives
Authors: Senarathne R.N. , Silva N.S. , Mallawaarachchi R.Y. , Hasanthi M.M.P.M. , De Silva H.H.V.K.N. , Kumari S.B.H.P. , Hettihewa L.M.
Published: May 2021

Prescribing pattern of antihypertensive medicines is much concerned in the context of treating this disease hypertension. The main objective was to determine prescribing patterns of antihypertensive medicines. Hundred prescriptions were collected from one community pharmacy outlet for three days. Prescriptions of hypertensive patients were analysed by using Microsoft Excel. Out of hundred prescriptions, 57% accounted for female and 43% for male. According to the results, antihypertensive drugs were widely prescribed for patients (54%) above 60 years, as expected following 45% of patients within 20-60 years age category. But, only one patient below 20 years of age (1%) was prescribed with anti-hypertensives. Out of all the prescribed anti-hypertensives, 59% accounted for Angiotensin Receptor Blockers (ARBs) & Angiotensin Converting Enzyme Inhibitors (ACEIs) followed by Calcium Channel Blockers (CCB) (16%), Diuretics (13%), β-Blockers (5%) and others (Alpha blockers, Potassium channel blockers, α & β blockers & Alpha-2 adrenergic receptor agonists) (7%) respectively. Losartan was the highly prescribed ACEI and ARBs (85%) followed by HCT (Diuretic) (75%) Diltiazem and Nifedipine (CCB) (36% equally) and Bisoprolol (β-Blocker) (57%) as highly prescribed anti-hypertensives under each category. Study concluded that, ACEIs and ARBs were the highly prescribed drug category following the drug Losartan. 1% from the total prescriptions were accounted for prescribing Nifedipine (CCB) only for the age below 20. But there were antihypertensive drug combinations prescribed for the 20-60 and above 60 age categories rather than prescribing a single antihypertensive. Further recommended to analyse the types of anti-hypertensive combinations among each age category.
Drill core pictures and description of samples collected from the REE Kwyjibo deposit (SOQUEM warehouse, Val d'Or, Quebec - October 2015)
Authors: Sappin A -A , Perreault S
Published: May 2021

The Kwyjibo property, located in the northeastern part of the Grenville Province, hosts iron oxide-copper-gold (IOCG) mineralization and the Josette rare earth element (REE) iron oxide-apatite (IOA) deposit. The property comprises several Mesoproterozoic
Fe-Cu-REE-(Au) mineralized zones (e.g., Gabriel, Gabruge, Andradite, Fluorine, Malachite, and Josette), occurring semi-continuously over a ~4-km NE-SW strike length area. In the years following the discovery of the Kwyjibo property, the main mineralized zones, especially the Josette horizon,
have been extensively diamond drilled which culminated in the current resources calculations of 6.92 Mt at 2.72% total rare earth oxide (TREO) and 53% Fe2O3 (measured + indicated) and 1.33 Mt at 3.64% TREO and 48% Fe2O3 (inferred). As part of a research project in collaboration with
the Université Laval (Québec) and the Ministère de l'Énergie et des Ressources naturelles du Québec (MERN), aiming to characterize the Sm-Nd isotopic signatures of the main REE deposits of the Quebec Province, a visit was carried out in 2015 at the Soquem's warehouse in Val
d'Or (Quebec) to collect some drill core samples from the main areas with high-grade REE mineralization of the Kwyjibo property. This report under the TGI-6 sub-activity "Mineral systems with IOCG and affiliated critical metal deposits" document the context of the representative samples collected
from four boreholes, which intersected the Josette deposit and the Fluorine prospect of the Kwyjibo property, as well as the drill core pictures of the main rock types and the field relationships between each of the units.
Orbital and intracranial complications after acute rhinosinusitis
Authors: Kastner J. , Lisy J. , Taudy M. , Grabec P. , Betka J.
Published: May 2021

BACKGROUND/OBJECTIVES: Nowadays, intracranial abscess is a rare complication of acute rhinosinusitis. The consequent orbital and intracranial complications of acute rhinosinusitis are rare but must be mutually excluded in complicated rhinosinusitis even when proper surgical and medical treatment tend to efficiently heal the orbital complication. METHODS: We report a case of a patient who primarily revealed symptoms of orbitocellulitis as a complication of odontogenous rhinosinusitis. Proper diagnostic and therapeutical measures were undertaken to manage the disease immediately after stationary admission. RESULTS: Two weeks after an inconspicuous healing period, hemiparesis due to formation of an intracranial abscess developed. An emergent situation reveals which was unusual to the clinical situation. CONCLUSION: The possible role of underlying mechanisms of intracranial abscess formation is discussed and review of literature concerning orbital and intracranial rhinosinusitis complications is performed. The correct indication of imaging methods and accurate evaluation of diminutive symptoms are essential. We assume that performance of a complementary CT of the brain or MRI even when previous CT scan of the orbit/paranasal sinuses reveals no cerebral pathology should be done to avoid or minimize future patients with consecutive orbital and intracranial complications of acute rhinosinusitis.
Plastinated nasal model: a new concept of anatomically realistic cast
Authors: Durand Marc , Pourchez Jeremie , Louis Bruno , Pouget Jean Francois , Isabey Daniel , Coste Andre , Prades Jean Michel , Rusch Philippe , Cottier Michele
Published: May 2021

BACKGROUND: For many years, researchers have been interested in investigating airflow and aerosol deposition in the nasal cavities. The nasal airways appear to be a complex geometrical system. Thus, in vitro experimental studies are frequently conducted with a more or less biomimetic nasal replica. AIM: This study is devoted to the development of an anatomically realistic nose model with bilateral nasal cavities, i.e. nasal anatomy, airway geometry and aerodynamic properties as close as possible to in vivo behaviour. METHODS: A specific plastination technique of cephalic extremities was developed by the Anatomy Laboratory at the Saint-Etienne University in the last 10 years. The plastinated models obtained were anatomically, geometrically and aerodynamically validated using several techniques (endoscopy, CT scans, acoustic rhinometry and rhinomanometry). RESULTS: Our plastination model exhibited a high level of anatomic quality, including a very good mucosa preservation. Aerodynamical and geometrical investigations highlighted a global behaviour of plastinated models perfectly in accordance with a nasal decongested healthy subject. CONCLUSIONS: The present plastination model provides a realistic cast of nasal airways, and may be a useful tool for nasal flow, drug delivery and aerosol deposition studies.
E-Learning Management Systems- A Feature-based Comparative Analysis
Authors: Salah Saeed , Thabet Mahmoud
Published: May 2021

One of the main important resources for higher education is a Learning Management System (LMS), which has shown an enhancement of students’ progress with high quality learning outcomes worldwide. Many e-learning tools exist, each one has its own weaknesses and strongest points to the online learning process. This number increases continuously, and the existing tools are being updated, redeveloped, and upgraded. The aim of this study is to present a comprehensive comparative analysis between existing e-learning management systems. Unlike other relevant studies that have narrow scope either in terms of the number of tools or the number of comparative features, this work considers top twenty, highly recommended tools, both open source and commercial. Furthermore, more than twenty evaluation features were used carefully to fulfil students’ and instructors’ current needs. The results of this study have shown that Moodle outperforms the others and it is considered as the best free open source tool for educational purposes. It supports more than 100 different languages and provides its services to more than tens of millions of customers worldwide. Besides to Moodle, Chamilo, TotaraLearn, Open edX and Sakai have more built-in features that provide services to educational institutions. Also, this study showed that Docebo, SkyPrep, ProProfs, SAP Litmos, Moodle, TotaraLearn, Open edX and Opigno systems have more built-in security mechanisms such as antispam, antivirus, IP Blocker, data protection and complex password enforcement. Most considered systems have gamification features except Schoology, ATutor, Sakai, and Ilias, and most commercial systems can offer 24/7 customer care services, except Edmodo and Telnet, whereas open source tools offer this service on specific time slots except Opigno, Ilias, TotaraLearn, Chamilo, and Canvas where the service is offered 24/7.
Knowledge Translation Improvement Strategies in Universities of Medical Sciences in Iran: A Qualitative Study
Authors: Sogand Tourani  , Narges Rafiei  , Shahnaz Rimaz  , Seyed Kazem Malakouti  , Alireza Heidari
Published: May 2021

BACKGROUND፡ Recently, one of the challenges in the health system of the country is the need for research contributing to policy-making. Therefore, it is crucial to develop activities in the field of knowledge Translation (KT). This study aimed to propose KT improvement strategies in universities of medical sciences in Iran.METHODS: In this qualitative study, 18 semi-structured interviews were conducted with key informants from the medical universities in Iran during January-July 2018. The transcribed documents were analyzed using the Gale framework analysis approach. Data organization was carried out using MAXQDA version 10 software.RESULTS: According to framework analysis, six KT improvement strategies were identified including improving the abilities and skills of researchers, improving the processes and quality of knowledge production, revising policies and laws, mproving the prerequisites, culture-building, and promoting the, use of evidence.CONCLUSION: Given the challenges and strategies outlined in this study, it seems that the mechanism of KT and its effects on improving health plans for policymakers and researchers has not been elucidated yet. Therefore, considerable changes in prerequisites, knowledge production processes, academic procedures, policies and laws are necessary for implementing KT in universities of medical sciences in Iran.
Factors Associated with Multi-Drug Resistant Tuberculosis among TB Patients in Selected Treatment Centers of Amhara Region: A Case-Control Study
Authors: Getahun Yeshiwas Ambaye  , Gebiyaw Wudie Tsegaye
Published: May 2021

BACKGROUND: Multi-drug Resistant Tuberculosis (MDR-TB) is found to be a major public health problem both in developed and developing countries. Ethiopia is one of the 30 high MDR-TB burden countries in the world. Although several studies were done to identify the determinants of MDR-TB, the reported findings are heterogeneous across the world.METHODS: Unmatched case-control study was conducted at Debre Markose Referral Hospital, Debre Birhan Referral Hospital, and Boru Media District Hospital in Amhara Region, Northern Ethiopia, from March 01/2019- April 30/2019. Cases were all tuberculosis patients with culture or line probe assay confirmed mycobacterium tuberculosis resistant to at least both Isoniazid and Rifampicin and registered on second-line TB treatment. Controls were all patients with Bacteriological (molecular) proven drug-susceptible TB strains and whose recent smears result were turned to negative and registered as cured from January 01/2014 – December 31/2018. A pre-tested checklist was used to collect the data.RESULT: Of the total reviewed documents (393), 98 cases and 295 controls were involved in this study. And, 54(55.1%) among cases and 162(54.9%) among controls were males. sixty nine(70.4%) among cases and 163(55.3) among controls were within the age group of 26-45 years. In the multivariable logistic regression analysis, age between 26-45years old (AOR=3.35; 95% CI: 1.15, 9.77), previous history of TB treatment (AOR= 14.2;95%CI: 7.8, 25.3) and being HIV positive (AOR=4.4; 95% CI:1.8, 10.4) were significantly associated with MDR-TB.CONCLUSION: Age between 26-45 years old, previously treated cases and TB/HIV co-infection were identified as the determinants of MDR-TB. Special attention should be given to age between 26-45 years old, previous history of TB treatment and TB/HIV co-infection to prevent and control MDR-TB in the local context.
The dynamics of households’ adoption behaviour of solar home systems (SHSS) in Ashongman Estate in the Greater Accra Region of Ghana
Authors: Mensah Gloria , McWilson Wilson Kodwo
Published: May 2021

Ghana heavily relies on hydrogenated and thermal electricity. For the past thirteen years, the dynamics of climate change and increasing fuel prices have engendered an electricity crisis since the supply of electricity cannot match the ever-burgeoning demand from households and industries. While this is so, the uptake of renewable energy sources has been abysmal in Ghana. This study thus seeks to assess the adoption behaviour of solar home systems, an environmentally friendly and convenient alternative electricity source by households in Ashongman Estate, a suburb of Accra, Ghana. Using a mixed research approach including binary logistic regression analysis, the study found that education, income levels, the performance expectation and housing tenure arrangements were crucial factors that determine the willingness of households to adopt the solar energy sources. We recommend that to encourage the uptake of Solar Home Systems (SHSs) which are environmentally sustainable, it is expedient that government collaborates with relevant stakeholders to provide solar home systems (SHSs)for households with the necessary technical capacity while putting financial policy measures in place to ensure their affordability regardless of socio-economic status. In addition, we recommend further studies to explore the role of incentives in solar home systems adoption to inform policies that will encourage their uptake.
Novel Organic Fertilisers for Management of Root-Knot Disease of Soybean [Glycine max (L.) Merrill]
Authors: Atungwu JJ , Jude GE , Olabiyi TI , Orisajo SB
Published: May 2021

Organic farming is currently receiving great impetus in Africa due to its potentials to improve nutrition, income and livelihoods of resource-poor smallholder farmers. Sustainable management of root-knot nematodes in organically grown soybean remain a major challenge in Africa. Greenhouse studies were conducted to evaluate the efficacy of three novel organic fertilisers (sunshine, neem, and IAR & T fertilisers) as organic nematicides for control of Meloidogyne incognita (Mi) in a susceptible soybean variety. The organic fertilisers were applied two weeks before planting. All three organic fertilisers were significant (P < 0.05) in reducing (96 – 99 %) Minematode populations in soil leading to 86 – 100 % improvement in soybean grain yield. There were high and positive relationships between plant heights stem girth and yield components. Root gall development on test crop was negatively correlated with plant growth (r = - 0.47 to – 0.48) and yield (r = - 0.57 to – 0.59).Keywords ·Root-knot nematodes · Neem · Soil amendments
Visceral Effect of Female Genital Mutilation as Explained by Married People in Nigeria: Implications for Counselling
Authors: Umoh SH , Adeoye EA , Bukoye RO , Rotimi OJ
Published: May 2021

This study investigated the visceral effect of female genital mutilation as explained by married men and women in Nigeria. A Structured  questionnaire designed by the researchers was administered to 500 respondents. Mean scores, Standard Deviation and Rank Order were used to analyse the responses collected. On the whole, the findings showed that women who were genitally mutilated faced several visceral effects after the surgical operation. These included self-reproach, poor self-image, painful menstrual periods and severe bleeding. Men whose partners were genitally mutilated confirmed that their wives faced these challenges. Based on these findings, it is recommended that counselling and education should be given to groups that still enforce this practice.Keywords · Early Childhood Education · Management Strategies · Funding
Evaluation of the Blended Learning approach to Teaching Software Engineering
Authors: Bada JK
Published: May 2021

This research presents experimentation of MOODLE course management system for teaching software engineering and process modelling to master’s degree students. The students used MOOLE for online  discussions, assignments and for downloading lecture notes for a duration of four months. Thereafter, they evaluated the learning environment with questionnaires. The results indicate that MOODLE is a highly accepted learning management system for teaching and learning in a resource limited country. However, for a learning management system like MOODLE to be effectively implemented in a University setting, it is important for the University management toinvest in the initial computer hardware equipment and Internet connectivity infrastructure to overcome technology barriers.Keywords · MOODLE · Blended learning · E-learning
Influence of fluorescent Pseudomonas on the growth of Mimosa scabrella seedlings
Authors: Barcellos Daniceli , Dambros Vanessa Gisele , Kondo Yanka Rocha , Flôres Andressa Vasconcelos , Stinghen Jussara Cristina , Botelho Gloria Regina
Published: May 2021

Bracantiga (Mimosa scabrella Benth) is a native leguminous specie from the south of Brazil, with great potential for commercial use. It can be used to recover degraded areas due to their fast growth, high adaptability and root nodule formation capacity. One alternative to reduce fertilization costs of seedlings production, are the plant growth promoting rhizobacteria. The fluorescent group of Pseudomonas is common at several plant rhizosphere. The objective of this work was to assess the growth stimulus of fluorescent Pseudomonas isolates at bracatinga seedlings. The seeds were inoculated with three bacterial isolates (CBSAL14, CBSAL18 and CBSAL05), genetically identified as Pseudomonas sp. They were previously grown in 50 mL of Luria Bertani medium for 48 h and then the seeds were submerged for 30 min in the suspensions. Subsequently, they were sown in tubes containing sterilized commercial substrate and kept in greenhouse for five months. From 61 days after sowing, seedling height and stem diameter were measured monthly. The CBSAL14 and CBSAL18 isolates promoted promoted increase in growth of seedlings height of inoculated individuals compared to control, suggesting their potential use as plant growth promoters.
What Marketing Is and What Marketing Is Not
Authors: Di Muro Fabrizio
Published: May 2021

This presentation provides a definition of marketing and identifies the four conditions required for marketing to occur. These conditions are illustrated through the use of an example. The presentation concludes with a brief discussion of what marketing is not.
Explicitly solvable systems of two autonomous first-order Ordinary Differential Equations with homogeneous quadratic right-hand sides
Authors: Calogero Francesco , Payandeh Farrin
Published: May 2021

After tersely reviewing the various meanings that can be given to the
property of a system of nonlinear ODEs to be solvable, we identify a special
case of the system of two first-order ODEs with homogeneous quadratic
right-hand sides which is explicitly solvable. It is identified by 2 explicit
algebraic constraints on the 6 a priori arbitrary parameters that characterize
this system. Simple extensions of this model to cases with nonhomogeneous
quadratic right-hand sides are also identified, including isochronous cases.
Mind Games with the Views of Classroom Teachers
Authors: Kula Sultan Selen
Published: May 2021

This study aimed to determine the views of classroom teachers about mind games in Turkey and a survey model was used. The research was carried out with the phenomenological design from qualitative research methods. Thirty-one primary school teachers were selected by the criterion sampling method which is one of the purposeful sampling methods. In order to collect the data, the opinion form prepared by the researcher was completed by classroom teachers. The documents obtained were analyzed with the content analysis method. It was seen in the study that teachers usually play mind games with students in the Free Activities course, mainly for 2 hours per week, strategy games were played most, memory games were the least played games, and mind games contributed to communication, creativity, problem solving, mathematical and logical thinking, and academic skills. In addition, classroom teachers experienced some problems related to classroom management, to physical conditions and student characteristics while playing mind games. In line with the results, it is suggested that the multi-dimensional development of students be supported by playing mind games at every grade level.
Error Analysis of Written Essays: Do Private School Students Show Better EFL Writing Performance?
Authors: Alsher Tasnim
Published: May 2021

This study investigated writing errors committed by engineering students at An-Najah National University in Palestine and compared these errors based on school type. It analyzed errors in essays of 54 undergraduate students, 28 attended governmental schools, and 26 attended private schools. Errors were classified based on James's taxonomy. Results showed that both groups faced the same problems when writing in English, as the frequency of committed errors for both groups had the order of morphology, spelling, punctuation, formal, syntactic, semantic and ordering, except for formal errors being higher than punctuation for private school students. The study also concluded that no statistical significant differences were apparent in frequency of errors committed by the two groups. This indicates that private school students do not outperform their governmental school peers in school performance. Such results are necessary for parents and for the Ministry of Education as they oppose the general belief that performance of private school students is better.
Enhanced 7E Instructional Model towards Enriching Science Inquiry Skills
Authors: Lubiano Michael Leonard D. , Magpantay Marife S.
Published: May 2021

This study enhanced the 7E instructional model towards enriching the science inquiry skills of senior high school learners in General Chemistry 1. A total of 136 Grade 12 learners enrolled in the Science, Technology, Engineering, and Mathematics (STEM) strand participated in the study. The study was composed of three phases. In Phase I, the generated themes nature of topics, learning environment, learner-related and teacher-related issues were found to be the causes of difficulty in science inquiry skill enrichment. The learners’ meaningful learning experiences during the process were encapsulated in Phase II. Finally, Phase III used the generated themes in the enhancement of 7E instructional model promoting inquiry-based and constructive learning among senior high school learners.