bluuebunny/crossref_metadata_2025 huggingface dataset:
A Hierarchical Learning Model based on Deep Learning and its Application in a SPOC and Flipped Classroom
Authors: An Xiangming , Qu Chengliang
Published: May 2021

In accordance with the progressive knowledge-to-ability transformation laws, a hierarchical learning model composed of cognitive layer, application layer, and design layer was created and applied to college computer teaching. This model was used to facilitate the deep learning among students through the association establishment, step-by-step understanding, and comprehensive application of new and old knowledge. In the teaching design process, the “5-problem” teaching, which centered on “student–problem–activity–resource,” was conducted and applied to the “Small Private Online Course (SPOC) + flipped classroom.” The teaching result was assessed using the proposed hierarchical classification method. Results demonstrate that the improved teaching model remarkably enhances the ability of noncomputer major students to solve the practical problems encountered in their specialties by virtue of computational thinking through the data analysis of evaluation results and students’ survey feedback. The students obviously speak more highly of the improved teaching model than the traditional blended teaching in the aspects of teaching content organization, learning effect, integration degree with the specialty and satisfaction. The degree of their participation in the flipped classroom reached as high as 90%.
Development of Learning Everywhere Class (LEKAS) Platform for Economic Education
Authors: Megasari Rizza , Haryono Agung , Putri Rizky Dwi , Rokhmani Lisa , Inayati Ro’ufah , Handayani Sri , Annisya’ Annisya’
Published: May 2021

The main objective of this research is to develop an Android-based mobile learning platform for economic education students so that they can study anywhere and anytime. Following the current trend, learning must be flexible in accordance with learning styles that tend to lead to online learning. Students will be more comfortable studying with their smartphones anywhere than having to carry books everywhere. This platform consists of several features, namely lecture material, evaluation results and progress of reading material in the form of PDF and video embedding. The design development in this study uses the ADDIE model, which consists of 5 stages, namely Analysis, Design, Development, Implementation, and Evaluation. This product was tested on 60 students of economic education class 2019 in introduction of macroeconomics courses. The final product of this research is an Android-based mobile learning platform with the title LEKAS (Learning Everywhere Class). The results of the evaluation of this product are that there is still a need for improvements in the ease of access to various types of android. The advantage is that students can immediately learn and find out the extent of understanding by taking tests after studying the material that has been shared. Through this platform students can study material and evaluate the material they read anywhere and anytime. The convenience provided on this platform will be able to increase the effectiveness and efficiency of learning in economic education.
Cristalliser l’histoire
Authors: Vallard Annabel , Bellina Bérénice , Evrard Olivier
Published: May 2021

La Thaïlande péninsulaire compte peu de vestiges archéologiques à l’exception de perles qui cristallisent des passions dévorantes. Collectées, portées, commercialisées, elles font régulièrement la une des journaux. À partir d’une enquête ethnographique réalisée auprès de la mission archéologique franco-thaïe en péninsule thaïe-malaise, cet article éclaire les pratiques de collecte de ces perles par divers acteurs locaux, et envisage les discours et représentations parfois contradictoires auxquels elles donnent lieu.
Défendre les intérêts moraux et économiques des inventeurs : des formes d’action collective sous la Révolution (1790-1798)
Authors: Demeulenaere-Douyère Christiane
Published: May 2021

En 1790-1791, est constituée une « société libre » composée de praticiens et de gens de métier d’horizons industriels divers, la Société des inventions et découvertes. Elle s’illustre particulièrement en obtenant de la Constituante le vote des lois protectrices de l’invention, dont elle est largement l’inspiratrice. Quelques années plus tard, en 1798, la situation des inventeurs en France s’étant à nouveau dégradée, elle se donne un nouveau règlement, comportant un projet innovant de société industrielle et commerciale assurant « l’exécution des inventions utiles […] au profit des auteurs et au sien ». Cet article se propose de revenir sur ce projet, resté dans les cartons, mais qui témoigne des aspirations d’un groupe socio--professionnel à prendre en main lui-même ses intérêts moraux et économiques.
« Attention, demoiselles, l’électricité passe ! » Représentations et expériences des rapports électricité-mobilité dans les Asturies (1880-vers 1920)
Authors: Pérez Zapico Daniel
Published: May 2021

Cet article réfléchit sur la nature singulière de l’électricité perçue du point de vue de la mobilité dans les Asturies pendant la période 1880-1920. L’électricité étant associée par les élites de la région au progrès, à la maîtrise de la distance et du temps et, par conséquent, au développement des affaires, nous souhaitons proposer ici une réflexion autour des différentes formes qu’ont revêtues la réception de cette énergie et la perception de la mobilité qui lui est associée. De ce point de vue, l’électricité, en tant que métaphore et support technique de ces notions de mobilité, a permis de construire des discours positifs, mais elle a été reçue de manière très complexe dans les différents groupes sociaux et idéologiques.
Le véhicule hybride rechargeable : un nouveau système sociotechnique
Authors: Pierre Magali , Huguet Jérôme
Published: May 2021

Le véhicule électrique induit-il de nouvelles façons de se mouvoir ? Ce texte, qui se situe dans le champ de la sociologie des usages, présente les évolutions que le véhicule hybride rechargeable apporte dans le système de mobilité des utilisateurs. Il s’agit en effet, pour les salariés le testant pendant les trois années de l’expérimentation, de modifier leur mode de conduite, mais également d’intégrer la pratique de recharge aux habitudes quotidiennes, afin de rester le plus possible en mode électrique. Les auteurs montrent également que les modalités de mise à disposition du véhicule (voiture de fonction, de service, ou dans un pool) clivent des usages différenciés du dispositif. En effet, l’attribution d’un véhicule à titre individuel (ou non) au sein de l’entreprise est un facteur explicatif des usages, tout aussi puissant que le caractère hybride rechargeable du véhicule : cette attribution nominative encourage des usages réguliers (notamment pour les trajets domicile-travail) et autorise une charge fréquente à domicile, autant d’aspects qui accroissent l’attachement à ce véhicule. Ces modalités contrastées de mise à disposition soulignent l’importance du dispositif sociotechnique complet, autrement dit de l’articulation entre déplacements et stationnement au sein du système de mobilité des individus.
La parentalité gitane et l’espace urbain : une relation renouvelée ?
Authors: Giband David
Published: May 2021

Cet article explore les façons dont une parentalité gitane inédite s’exprime au sein d’un quartier gitan de Perpignan. Il s’agit de comprendre en quoi le rapport à l’espace joue un rôle moteur dans les formes émergentes de parentalité chez les jeunes couples. Le quartier choisi, Saint-Jacques, lieu emblématique de la communauté gitane de la ville, connait des changements impulsés par les pouvoirs publics mais aussi par les familles. Au-delà des singularités propres aux Gitans sédentarisés, cet exemple donne à voir la façon dont s’opère et se renouvelle l’exercice de la parentalité dans les quartiers populaires et la place centrale qu’y tient la dimension spatiale.
Parents en cohabitat. Vers une parentalité élargie ?
Authors: Salembier Chloé , Ledent Gérald
Published: May 2021

Au travers d’une recherche qualitative sur deux projets de cohabitat en Région bruxelloise, cet article interroge les modalités d’une reconfiguration possible de la parentalité. Dans la lignée des études féministes, la parentalité est lue à travers la conciliation des rôles productif, reproductif et social/communautaire, et le logement est compris comme un espace de travail lié au soin des enfants. Dans le cohabitat, différentes stratégies sont déployées pour concilier les rôles parentaux, telles que la mutualisation, l’externalisation, la répartition et la valorisation des tâches liées au soin des enfants. Ces stratégies, développées à travers la coprésence des habitant·e·s, l’appropriation et la cogestion des espaces et des services communs, semblent produire une figure nouvelle de parentalité, « élargie ».
Comparaison et réflexions sur l’image de Yanluo
Authors: Han Jing
Published: May 2021

En tant que composante importante du système de croyances chinois, des légendes du monde souterrain se sont développées sur une très longue période. Les dieux concernant la mort se sont succédés l’un après l’autre et quelquefois se sont mélangés et ont fusionné entre eux. Ainsi les images concernant ce monde et les dieux de ce monde restent-elles toujours très variées. Dans la première partie du travail, nous parlons de quelques dieux et conceptions de la mort avant l’introduction du bouddhisme en Chine, et puis nous essayons d’analyser les images de Yanluo (le roi Yama) dans les sutras et les fictions après son introduction en Chine. Enfin nous voyons que l’évolution de ses images est un processus de dédivinisation.
Quel avenir pour les cimetières à Shanghai ?
Authors: Bellocq Maylis
Published: May 2021

Dans cet article nous nous interrogeons sur la place accordée aux cimetières aujourd’hui à Shanghai. Dans un contexte de forte pression foncière, l’expansion urbaine et le vieillissement de la population font peser de lourdes contraintes sur les cimetières de Shanghai qui n’ont plus la possibilité de s’étendre. Après avoir montré comment la municipalité a toujours veillé à maintenir ses cimetières à distance, nous analysons la manière dont ils sont amenés à se réinventer. Nous voyons également comment internet offre de nouvelles perspectives aux cimetières de la ville en proposant un nouveau type de pratiques funéraires.
Les pratiques funéraires contemporaines japonaises : quels lieux pour les morts et pour la mort au Japon ?
Authors: Duteil-Ogata Fabienne
Published: May 2021

Cet article propose d’examiner les lieux de sépulture et lieux cultuels destinés aux morts au Japon à partir des pratiques funéraires contemporaines afin de considérer les changements survenus depuis le début du XXIe siècle et poser la question d’une nouvelle ontologie du mort. S’appuyant sur plusieurs terrains ethnographiques réalisés en milieu urbain, principalement à Tôkyô, l’étude des nouvelles pratiques montre que l’espace social de la lignée ancestrale tend à s’élargir à des personnes sans lien de parenté, voire même aux animaux de compagnie alors que l’espace de la sépulture et l’espace cultuel, au contraire, tendent à prendre moins d’espace. En effet, les tombes traditionnellement liées au groupe domestique deviennent des tombes collectives, les cendres des morts sont dispersées dans la nature réduisant le défunt à un élément naturel ou bien encore les objets cinéraires (contenant des cendres ou fabriqués à base de cendres), concentrent dans un artefact portable et mobile le défunt. Assiste-t-on à un changement de paradigme, à une nouvelle ontologie du mort au Japon ?
La toilette mortuaire en soins palliatifs : une mise en corps et en espace de la mort
Authors: Drillaud Frédérique
Published: May 2021

En soins palliatifs, une équipe interdisciplinaire est présente afin d’accompagner la personne malade qui ne peut être guérie ainsi que son entourage. Dans ce contexte, la toilette mortuaire illustre à elle seule la large dimension symbolique et éthique que revêt l’accompagnement en soins palliatifs, lieu où la mort ne peut être évitée. Cet accompagnement ultime prodigué par les soignants, ce face-à-face avec la mort, correspond à une mise en corps et en espace de cette dernière où sont aussi bien considérés les vivants que les morts. La chambre hospitalière devient le lieu d’une ritualisation qui semble mettre en scène, à l’aide de mots, de gestes et de silences, le passage de la présence à l’absence de l’occupant de cette chambre. À travers la matérialisation de la préparation du corps du défunt et de l’espace chambre semble se jouer la configuration d’un espace imaginaire lié à la mort où le prendre soin ne s’arrête pas lorsque le cœur a cessé de battre. Un espace dédié où la mort n’est pas occultée mais accompagnée semble révéler la leçon de la mort sur la vie, mettant en exergue les notions de quête de sens et de reconnaissance où la relation à l’autre devient primordiale. À travers l’effet-miroir de la mort sur la vie, ce sont les formes de solidarité et d’organisation de notre société qui sont interrogées.
Les lieux de la mort dans les Contes fantastiques du pavillon des loisirs de Pu Songling
Authors: Liu Xinyi
Published: May 2021

Les lieux des morts constituent une problématique directrice dans les Contes de Pu Songling (fin du XVIIe siècle), œuvre classique et fantastique qui exerce encore une grande influence sur la culture chinoise de nos jours. L’auteur crée une série de lieux des morts comme la tombe, la maison fantôme, les lieux subaquatiques, le monde des enfers, le monde des Immortels etc., où la frontière entre la visibilité et l’invisibilité est floue et même effacée. Cette ambiguïté donne libre cours à un riche imaginaire sur l’univers des morts où l’horreur et le tabou peuvent se transformer en idylle et volupté. La quintessence des croyances chinoises (cultes primitifs, bouddhisme, taoïsme, confucianisme) imprègne la création de ces lieux en franchissant l’espace et le temps. En tant que lettré frustré, Pu construit parallèlement une utopie à travers ces lieux surnaturels.
Envers la vie et la mort : passage de la Chine au Japon chez Claudel
Authors: Xu Yi
Published: May 2021

Tout en gardant une place primordiale, la question de la mort chez Paul Claudel a connu une série de nuances durant ses séjours en Chine et au Japon. La perception culturelle, la familiarisation avec la littérature, l’emprunt artistique et la réflexion philosophique ont contribué à créer son propre art de l’« être-vers-la-mort ».
PLANEJAMENTO E IMPLEMENTAÇÃO DE ESTRATÉGIAS POR MEIO DA GESTÃO PARTICIPATIVA ENTRE DIRETORES E ASSOCIADOS DO CLUBE DA AABB DE NAVIRAÍ-MS
Authors: Pereira Jaiane Aparecida , Santos Ana Joyce Godoy dos , Resch Sibelly
Published: May 2021

O objetivo do presente trabalho foi examinar o processo de planejamento e implementação de estratégias no clube da AABB no município de Naviraí-MS. De forma específica, a pesquisa buscou identificar as potencialidades estratégicas do clube e descrever as ações estratégicas desenvolvidas pelas equipes para aprimoramento da associação. Para tanto, a revisão da literatura discutiu sobre estratégia e Visão Baseada em Recursos, e sobre gestão participativa. Como procedimentos metodológicos, adotou-se a pesquisa qualitativa descritiva e a pesquisa-ação. A pesquisa-ação foi desenvolvida por meio da participação de uma das autoras nas reuniões com os envolvidos para formulação do planejamento estratégico da AABB de Naviraí e para desenvolvimento e acompanhamento das ações realizadas. Como resultados, avaliou-se que, com a ideia de práticas de gestão participativa entre diretores e associados e a valorização dos recursos internos, houve um compartilhamento de responsabilidades pelas equipes de trabalho com resultados positivos. Apesar dos aspectos positivos, vale destacar que, a mudança do estilo hierárquico apresenta dificuldades devido ao engessamento da estrutura, o que precisa ser atualizado. Sugere-se que outras associações optem por um modelo mais participativo e democrático, fomentando a troca de informações e formação de parcerias, pois a gestão participativa eficiente depende da interação entre diversos atores.
Post–COVID-19 Syndrome: Theoretical Basis, Identification, and Management
Authors: Scordo Kristine Anne , Richmond Misty M. , Munro Nancy
Published: May 2021

As COVID-19 continues to spread, with the United States surpassing 29 million cases, health care workers are beginning to see patients who have been infected with SARS-CoV-2 return seeking treatment for its longer-term physical and mental effects. The term long-haulers is used to identify patients who have not fully recovered from the illness after weeks or months. Although the acute symptoms of COVID-19 have been widely described, the longer-term effects are less well known because of the relatively short history of the pandemic. Symptoms may be due to persistent chronic inflammation (eg, fatigue), sequelae of organ damage (eg, pulmonary fibrosis, chronic kidney disease), and hospitalization and social isolation (eg, muscle wasting, malnutrition). Health care providers are instrumental in developing a comprehensive plan for identifying and managing post–COVID-19 complications. This article addresses the possible etiology of postviral syndromes and describes reported symptoms and suggested management of post-COVID syndrome.
In vitro and in vivo Application of Eco-friendly Treatments to Control Postharvest Stem-end Rot of Naturally Infected Avocado (cv. Pollock)
Authors: Nilmini R. K. , Kodituwakku T. D. , Abeywickrama K. , Kuruppu M.
Published: May 2021

Purpose: Stem-end rot (SER) is an endophytic fungal infection of avocado causing significant postharvest losses, affecting its marketability. This study was conducted to identify effective concentrations of selected eco-friendly essential oils and chemicals to control SER pathogens by conducting in vitro bioassays and to develop treatments to control SER in naturally infected avocado (cv. Pollock) using less hazardous alternatives to synthetic fungicides.Research Method: In vitro disc volatilization and poison food bioassays were conducted to identify inhibitory concentrations of some essential oils and chemicals against SER pathogens. Avocado fruits were subjected to eco-friendly fumigation and dip treatments and their pathological, physicochemical and sensory properties were assessed after 7 days of storage at 15 °C.Findings: Disc volatilization bioassay revealed that 5 µL/plate clove oil was most effective against Lasiodiplodia theobromae, Diaporthe nelumbonis and Fusarium oxysporum. According to Poisoned food bioassay, 5% (w/v) sodium bicarbonate and 0.07% (v/v) acetic acid were highly effective against the test pathogens. SER incidence of avocado fruits has been successfully delayed for 7 days after subjecting to fumigation treatment with clove oil and dip treatments with sodium bicarbonate and acetic acid, followed by storage at 15 °C. None of the treatments adversely affected physicochemical and sensory properties of avocado.Originality/Value: Treatments could be further improved by conducting a medium-scale in vivo trial to obtain good quality avocado with higher consumer acceptance.
Segnalazioni Faunistiche italiane
Authors: V.V. A.A.
Published: May 2021

626 - Chalybion bengalense (Dahlbom, 1845) (Hymenoptera Sphecidae)

627 - Leistus (Leistus) fulvibarbis fulvibarbis Dejean, 1826 (Coleoptera Carabidae)

628 - Syntomus impressus impressus (Dejean, 1825) (Coleoptera Carabidae)
Lung cancer screening: a literature review
Authors: Piovano Pier Luigi , Grosso Federica , Numico Gianmauro , Maconi Antonio , Polla Biagio
Published: May 2021

Objectives: Critical analysis of Literature on Lung Cancer Screening, synthesis and balance between scientific evidence and real world applicability. Methodology: selection of the most relevant clinical trials on the topic. Results: the most representative and positive studies (NLST, NELSON and MILD) have been examined and discussed, pointing out their limits and unsolved issues. Conclusion: despite clear statistically positive and encouraging results, many concerns still remain about routine implementation in the real world, mainly on the costs, the need for expert and trained dedicated radiologists and technicians, the theorical advantage of shifting resources to smoking cessation programs, the possible next integration of new biological and genetic diagnostic tools.
Scientific updating at the COVID-19 time. The daily newsletter
Authors: Maconi Antonio , Betti Marta , Como Mariasilvia , Dacquino Mariateresa , Donà Silvana , Viazzi Federica
Published: May 2021

Since March 11, 2020, the day on which the WHO declared the coronavirus pandemic, the Infrastruttura Ricerca Formazione Innovazione - Biomedical Library Documentation Center of Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo has been contributing to the dissemination of updated and reliable Covid-19 scientific information. The Library' staff worked with the Communication Office and the Clinical Trial Center to provide a service to stakeholders sending a daily newsletter of scientific evidences. This Working Paper is a report of the creation and development of the "daily newsletter of scientific evidence", enriched with some wider reflections.
Human umbilical cord Wharton's jelly-derived mesenchymal stem cell transplantation could improve diabetic intracavernosal pressure
Authors: Wu Jian-Hong , Wang Dong-Ya , Sheng Lu , Qian Wei-Qing , Xia Shu-Jie , Jiang Qi
Published: May 2021

Mesenchymal stem cells (MSCs) secrete various cytokines with angiogenic and neuroprotective effects. This study aimed to assess the effects of human umbilical cord Wharton's jelly-derived MSCs (hWJ-MSCs) on diabetes-related intracavernosal pressure (ICP) impairment in rats. hWJ-MSCs were isolated from human umbilical cord Wharton's jelly and transplanted into the corpus cavernosum of streptozotocin (STZ)-induced diabetic rats by unilateral injection. The erectile function was evaluated at 4 weeks, as well as the expression levels of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), endothelial nitric oxide synthase (eNOS), and insulin-like growth factor 1 (IGF1). STZ-induced diabetic rats showed impaired ICP, which was significantly improved by hWJ-MSC treatment. VEGF, eNOS, IGF1, and bFGF expression levels were higher in hWJ-MSC injection sites than those in control ones in STZ-induced diabetic rats. These results suggest that hWJ-MSC transplantation might improve diabetic erectile dysfunction through increased production of paracrine growth factors, highlighting a novel potential therapeutic option for erectile dysfunction.
Hormone-Secreting Ganglioneuroma
Authors: Shah Aastha , Thummar Darshan , Mehta Maitrik , Shah Dishu , Suryanarayan U , Anand Dinesh
Published: May 2021

Ganglioneuromas are slow-growing benign counterparts of neuroblastoma groups along with ganglioneuroblastomas. Herein, we report a rare case of hormone-secreting benign ganglioneuroma in a 4-year-old kid. A 4-year-old male child was referred to our outdoor patient department from the primary health center to evaluate for the persistent complaint of increase in weight and raised blood pressure. On computed tomography (CT) of the abdomen and pelvis, an 6.4 cm × 6.5 cm mass lesion was seen over the right adrenal gland which was compressing segments VI and VII of the liver, and the right hilar region showed a 1.6 cm × 1.2 cm × 0.9 cm enlarged lymph node. The rest of the scan was clear. The patient was therefore started on cyclophosphamide and vincristine, received two cycles, and 4 weeks following it, a diagnostic CT scan of the abdomen, pelvis, and thorax was undertaken which showed a 5.1 cm × 4.5 cm × 6 cm lesion over the right suprarenal region abutting inferior vena cava, inferior surface of the liver, and superior renal surface. Surgical laparotomy followed by right adrenalectomy was done which on pathological evaluation to a surprise showed features suggestive of maturing ganglioneuroma with no evidence of any blastemal components. However, the posterior resection margin turned out to be positive. Radiation was omitted despite the margins being positive. Very few cases of hormone-secreting pediatric ganglioneuroma have been reported in literature and their management requires a meticulous approach.
On the triple correlations of fractional parts of
Authors: Technau Niclas , Walker Aled
Published: May 2021

For fixed$\alpha \in [0,1]$, consider the set$S_{\alpha ,N}$of dilated squares$\alpha , 4\alpha , 9\alpha , \dots , N^2\alpha \, $modulo$1$. Rudnick and Sarnak conjectured that, for Lebesgue, almost all such$\alpha $the gap-distribution of$S_{\alpha ,N}$is consistent with the Poisson model (in the limit asNtends to infinity). In this paper, we prove a new estimate for the triple correlations associated with this problem, establishing an asymptotic expression for the third moment of the number of elements of$S_{\alpha ,N}$in a random interval of length$L/N$, provided that$L> N^{1/4+\varepsilon }$. The threshold of$\tfrac {1}{4}$is substantially smaller than the threshold of$\tfrac {1}{2}$(which is the threshold that would be given by a naïve discrepancy estimate).

Unlike the theory of pair correlations, rather little is known about triple correlations of the dilations$(\alpha a_n \, \text {mod } 1)_{n=1}^{\infty } $for a nonlacunary sequence$(a_n)_{n=1}^{\infty } $of increasing integers. This is partially due to the fact that the second moment of the triple correlation function is difficult to control, and thus standard techniques involving variance bounds are not applicable. We circumvent this impasse by using an argument inspired by works of Rudnick, Sarnak, and Zaharescu, and Heath-Brown, which connects the triple correlation function to some modular counting problems.

In Appendix B, we comment on the relationship between discrepancy and correlation functions, answering a question of Steinerberger.
The number of $D_4$-fields ordered by conductor
Authors: Altug S. Ali , Shankar Arul , Varma Ila , Wilson Kevin H.
Published: May 2021

We consider families of quartic number fields whose normal closures over

\mathbb{Q}

have Galois group isomorphic to

D_4

, the symmetries of a square. To any such field

L

, one can associate the Artin conductor of the corresponding 2-dimensional irreducible Galois representation with image

D_4

. We determine the asymptotic number of such

D_4

-quartic fields ordered by conductor, and compute the leading term explicitly as a mass formula, verifying heuristics of Kedlaya and Wood. Additionally, we are able to impose any local splitting conditions at any finite number of primes (sometimes, at an infinite number of primes), and as a consequence, we also compute the asymptotic number of order-4 elements in class groups and narrow class groups of quadratic fields ordered by discriminant.

Traditionally, there have been two approaches to counting quartic fields, using arithmetic invariant theory in combination with geometry-of-number techniques, and applying Kummer theory together with

L

-function methods. Both of these strategies fail in the case of

D_4

-quartic fields ordered by conductor since counting quartic fields containing a quadratic subfield with large discriminant is difficult. However, when ordering by conductor, we utilize additional algebraic structure arising from the outer automorphism of

D_4

combined with both approaches mentioned above to obtain exact asymptotics.
Coordinate distribution of Gaussian primes
Authors: Friedlander John , Iwaniec Henryk
Published: May 2021

We study the problem of writing Gaussian primes as the sum of two squares, both of which are interesting arithmetically, in particular, when one is the square of a prime and the other the square of an almost-prime.
GOE statistics for Lévy matrices
Authors: Aggarwal Amol , Lopatto Patrick , Yau Horng-Tzer
Published: May 2021

We establish eigenvector delocalization and bulk universality for Lévy matrices, which are real, symmetric,

N \times N

random matrices

\mathbf{H}

whose upper triangular entries are independent, identically distributed

\alpha

-stable laws. First, if

\alpha\in(1,2)

and

E\in\mathbb{R}

is bounded away from 0, we show that every eigenvector of

\mathbf{H}

corresponding to an eigenvalue near

E

is completely delocalized and that the local spectral statistics of

\mathbf{H}

around

E

converge to those of the Gaussian Orthogonal Ensemble as

N

tends to

\infty

. Second, we show for almost all

\alpha\in(0,2)

, there exists a constant

c(\alpha)>0

such that the same statements hold if

|E|<c(\alpha)

.
Numerical treatment of singularly perturbed delay reaction-diffusion equations
Authors: Kiltu Gashu Gadisa , Duressa Gemechis File , Bullo Tesfaye Aga
Published: May 2021

This paper presents a uniform convergent numerical method for solving singularly perturbed delay reaction-diffusion equations. The stability and convergence analysis are investigated. Numerical results are tabulated and the effect of the layer on the solution is examined. In a nutshell, the present method improves the findings of some existing numerical methods reported in the literature.

Keywords: Singularly perturbed, Time delay, Reaction-diffusion equation, Layer
Influence of rebar practice in the total cost of building construction projects: The case of Hawassa city, Ethiopia
Authors: Nigussie Tariku , Chandrasekar M.K.
Published: May 2021

Rebar is one of the materials which is so scarce and highly expensive. The existing practices produce a large quantity of wastage; which contributes to the increment of the project cost. This study aimed to analyze the causes, extent, and remedies of steel wastages on the total costs of construction projects in Hawassa city. The study followed descriptive and analytical research designs. The cost estimated in the bill of quantity and the final cost after the provision of the steel with alterations was compared and the reasons for cost overrun were analyzed. The data were analyzed using Central value analysis, correlation and regression analysis using SPSS stat20, RebarWin7.97, ETABS2016. The percentage of the cost of steel wastage in total cost was found 1.43%. The result of the study verdict that frequent design change and bare-benders skill gap contribute much to the material wastage, thus for the cost overrun of projects.

Keywords: Bending gain, cost overrun, detailing, rebar, redesign, steel, wastage
Nhận diện quan niệm của sinh viên ngành công tác xã hội và các ngành khác về người nghèo và sự nghèo đói
Authors: Tiến Lê Minh
Published: May 2021

Công tác xã hội (CTXH) là ngành khoa học ứng dụng hướng đến các cá nhân, các cộng đồng yếu thế trong xã hội trong đó có người nghèo. Nghiên cứu này nhằm tìm hiểu quan niệm của sinh viên về người nghèo và sự nghèo đói của sinh viên ngành CTXH trong so sánh với các sinh viên ngành khác đang học tập tại Trường Đại học Mở Thành phố Hồ Chí Minh. Nghiên cứu sử dụng phương pháp định lượng dựa trên bộ tiêu chí đo lường về nhận thức, thái độ đối với nghèo đói do Yun và Weaver (2010) và Atherton, Gemmel, Haagenstad, và Holt (1993) được Việt hóa cho phù hợp với bối cảnh Việt Nam. Mẫu nghiên cứu bao gồm 180 sinh viên năm thứ hai và năm thứ ba, trong đó có 86 sinh viên CTXH và 94 sinh viên thuộc ba ngành Luật, Kinh tế và Ngoại ngữ. Kết quả cho thấy có sự khác biệt có ý nghĩa giữa hai nhóm sinh viên trong nhận định về nguyên nhân nghèo đói do các yếu tố thuộc cá nhân. Tuy nhiên, cả hai nhóm đều tương đồng trong việc xem các yếu tố thuộc cấu trúc xã hội, sự thiếu cơ hội là nguyên nhân của nghèo đói và cả hai nhóm đều có sự thấu cảm cao đối với người nghèo.
An FFT solver used for virtual Dynamic Mechanical Analysis experiments: Application to a glassy/amorphous system and to a particulate composite
Authors: André Stéphane , Boisse Julien , Noûs Camille
Published: May 2021

FFT-based solvers are increasingly used by many researcher groups interested in modelling the mechanical behavior associated to a heterogeneous microstructure. A development is reported here that concerns the viscoelastic behavior of composite structures generally studied experimentally through Dynamic Mechanical Analysis (DMA). A parallelized computation code developed with complex-valued quantities provides virtual DMA experiments directly in the frequency domain on a heterogeneous system described by a voxel grid of mechanical properties. The achieved precision and computation times are very good. An effort has been made to illustrate the application of such a virtual DMA tool through two examples from the literature: the modelling of glassy/amorphous systems at a small scale and the modelling of experimental data obtained in temperature sweeping mode by DMA on a particulate composite made of glass beads and a polystyrene matrix, at a larger scale. Both examples show how virtual DMA can contribute to question, analyze, and understand relaxation phenomena on either theoretical or experimental points of view.
CARBOHYDRATES, SALIVA AND ORAL HEALTH: A LITERATURE REVIEW
Authors:   Universidade Federal de Juiz de Fora, da Silva Alexandre  Ferraz , Horta Haylla de Faria ,   Universidade Federal de Juiz de Fora, Oliveira Carla de Souza ,   Universidade Federal de Juiz de Fora, Pinto Priscila de Faria ,   Universidade Federal de Juiz de Fora
Published: May 2021

O carboidrato é a principal fonte de energia e desempenha funções importantes para a sobrevivência como combustível energético, além de modular a oxidação das proteínas. A relação entre carboidratos e cárie dentária está na indução da formação de biofilme com micro-organismos cariogênicos. Esta revisão tem como objetivo relacionar a estrutura e a função dos carboidratos, o papel da saliva no ambiente bucal; a possível interação entre o consumo de carboidratos e a manutenção da saúde bucal e a relação da boca com outros aspectos fisiológicos, sociais e políticos por meio de uma revisão de literatura. Foram selecionados artigos nas bases de dados PubMed, SciELO e Google Acadêmico no período de 2016 a 2021, nos idiomas português e inglês. Os estudos analisados mostraram que a presença dos carboidratos e açúcares na forma de monoses é fator que estimula direta ou indiretamente o crescimento bacteriano e o aparecimento de cárie, doenças periodontais e cálculos dentários,portanto, uma alimentação equilibrada é um fator essencial para reduzir a colonização da boca por micro-organismos patogênicos. Conclui-se que o equilíbrio na alimentação, escovação e higienização adequadas e visitas periódicas ao dentista são medidas indispensáveis para garantir a saúde bucal e todos os seus benefícios.
Using PhET Simulations to Improve Scientific Skills and Attitudes of Community College Students
Authors: Taibu Rex , Mataka LLoyd , Shekoyan Vazgen
Published: May 2021

In this study, conceptual and algebra-based physics students were engaged in scientific inquiry using Physics Education Technology (PhET) interactive simulations via semester-long group projects. The instructor and students used the Scientific Abilities Assessment Rubrics (SAAR) to evaluate project presentations and papers (formative assessment). The overall research project was evaluated using Lab Skills Self-Assessment (LSSA) survey (pre and post) and the post reflection survey. The Science Process Skills Inventory (SPSI) was used to analyze some of the students’ responses to the reflection survey. Quantitative analysis of the LSSA survey showed a large effect size for both conceptual and algebra-based physics students (Cohen’s d 0.8, in both courses). Qualitative analysis of the reflection surveys supported this apparent huge gain in lab skills and revealed considerable positive students’ experiences of the PhET simulations (88% of students indicated positive satisfaction).
The Impact of the earlySTEM Program on Teacher and Student Outcomes: The Role of Teachers’ Involvement in the Program Development
Authors: Doganca Kucuk Zerrin , Yabas Defne , Boyaci Hayriye Sinem , Corlu Mehmet Sencer
Published: May 2021

This research aimed to investigate and compare teachers’ conceptualizations of their students’ and their own outcomes of our earlySTEM program at the K4 level in two distinct roles: practitioners only and practitioners and program developers jointly. The study group included 66 teachers, 26 of whom had actively contributed to the development of the earlySTEM program. Teachers in both roles were supported by teacher guides, student books and workshops throughout the 8-month long academic year. Data was collected at the end of the academic year through an open-ended survey. The program developer teachers identified more student outcomes under more diverse categories while the practitioner teachers mainly concentrated on cognitive outcomes and limited their conceptualizations to the national curriculum. In addition, the program developer teachers valued their involvement in the program development process and expressed more diverse professional outcomes referring to different types of teacher knowledge.
Exploring Thinking Process of Students with Mathematics Learning Disability in Solving Arithmetic Problems
Authors: Hobri Hobri , Susanto Herry Agus , Hidayati Alvi , Susanto Susanto , Warli Warli
Published: May 2021

The student's criterion for being diagnosed with MLD (Mathematics Learning Disabilities) can be classified as low arithmetic skills and poor working memory. The goal of this research is to understand students' process of thinking through the Polya stages when tackling arithmetic problems, as it has been expounded by Dr. Polya For students who have mathematics learning difficulties, the information is gathered by administering math problems to both females and males that ask the correct questions and have to be answered in their heads. the data gathered from the study concluded that students exhibit degrees of mental disorder that are caused by 3 distinct stages in which they must be addressed: problem-solving underachievement, when they are overreaching, and cognitive imbalance when they are overcommitted. to arrive at equilibrium, the more significant expansions must be coupled with an extensive assimilation and assimilation process As students with moderate to severe learning disability were completing multi-digit addition and multiplication, they underwent assimilation. Because of this, the cognitive fluidity present at this moment, the students have already found themselves in their present-looking-backward state of mind.
The development of an Ecology of Resources for online English as a Foreign Language (EFL) teachers in a Japanese university during the COVID-19 pandemic
Authors: Cowie Neil
Published: May 2021

English language teaching in Japanese universities can be described as having a very classroom-centered approach with relatively little online presence. Therefore, the transition to emergency remote teaching in April 2020 in response to COVID-19 was particularly challenging. This paper describes how the teaching staff in one English as a Foreign Language (EFL) department at a national university in Japan came together to support one another with various online guides and the creation of peer support groups. This activity is analysed in terms of the development of an Ecology of Resources (EoR) (Luckin, 2008) and an online Community of Practice (Lave & Wenger, 1991). The four collaborative documents and the peer support group that make up the EoR are described together with examples of this teacher development process. By partaking in the creation of the EoR teaching staff learned together how to teach online in an emergency context and this collaboration can be the basis for future online teaching in an institution where it had not happened before.
Prácticas, percepciones y emociones de docentes de Argentina en tiempos de pandemia Covid-19
Authors: Vergara Gabriela , Fraire Vanina , Manavella Agustina , Salessi Solana
Published: May 2021

El artículo presenta un análisis de prácticas, percepciones y emociones en torno a las correcciones de docentes de Córdoba, Buenos Aires y Santa Fe (Argentina), que durante el Aislamiento Social Preventivo y Obligatorio (ASPO) durante 2020, realizaron una enseñanza a distancia por emergencia sanitaria. Desde una sociología de los cuerpos y las emociones, se describen los resultados de 387 casos, que respondieron una encuesta on line durante junio de 2020, diferenciando por niveles educativos y tipos de gestión. El nivel secundario o medio muestra mayor carga de trabajo, con percepciones favorables sobre lo realizado aunque con bajos niveles de innovación. El lugar de lo afectivo en las correcciones se destaca en el nivel inicial. Los y las docentes se reconocen frente a un trabajo que cambia cuantitativa y cualitativamente, pero frente al cual cumplen y creen poder adaptarse a los cambios tecnológicos, sintiendo principalmente alegría y orgullo por lo que hacen. Se sugiere avanzar en el estudio de la construcción de nuevas habilidades y la relación entre cantidad y cualidad de instancias evaluativas en educación secundaria.
KESUKARAN MEMPELAJARI SUBJEK AKIDAH BAGI BUKAN PENUTUR BAHA-SA ARAB: REALITI DAN HARAPAN, PELAJAR PENGAJIAN ISLAM UNISHAMS SEBAGAI SAMPEL
Authors: Sayyed Emam Sallam Amr Mohammed , Hassan Serour Reda Owis , Mohamed Abdou Mohamed Elsayed
Published: May 2021

Pengkaji telah mendapati banyak masalah yang muncul sejak sekian lama dalam kajian ini akan tetapi ianya semakin bertambah dari semasa ke semasa muntakhir ini iaitu masalah kesukaran dalam mempelajari bahasa Arab khususnya bagi perkara yang berkait dengan ilmu-ilmu syar’ie. Perkara ini boleh dilihat melalui pelajar di negara-negara nusantara- khususnya negara Malaysia dan Indonesia, di mana mereka menghadapi kesukaran dalam menguasai pengajian akidah Islam kerana terdapat banyak institusi-institusi dan pusat yang hanya berpegang kepada aspek teori sahaja dan mengabaikan aspek praktikal. Maka adakah ini cara yang diinginkan daripada pengajian akidah, dan apakah cara yang boleh membantu pelajar-pelajar Universiti Islam Antarabangsa Sultan Abdul Halim Muadzam Shah dalam memahami asas-asas akidah dan mengaplikasikannya dalam kehidupan mereka. Sasaran kajian ini bertujuan untuk mengenalpasti kesukaran proses pembelajaran, dan untuk mendapatkan data tentang aspek kepentingan dalam mengatasinya serta data kesukaran yang dihadapi dalam mempelajari akidah daripada pelajar-pelajar UniSHAMS. Di samping itu, untuk diagnosis permasalahan yang bergantung dengan pelajar, tenaga pengajar dan kaedah dalam subjek ini serta apakah hasil dari dignosis ini. Setelah mendapat keputusan, tenaga pengajar dan pendidik dapat membantu dalam menawarkan penyelesaian yang jitu supaya dapat meluaskan lagi pemikiran pelajar dan menambah kepada mereka pelbagai bentuk pengajian agar pemikiran mereka dapat memahami dengan baik.
The Lower Clergy and Popular Culture
Authors: Bárth Dániel
Published: May 2021

The aim of this paper is to examine the role of the Christian lower priesthood in local communities in eighteenth–twentieth century Hungary and Transylvania in cultural transmission. The author intends to map out the complex and changing conditions of the social function, everyday life, and mentality of the priests on the bottom rung of the clerical hierarchy. Particular emphasis is placed on the activity of priests active at the focus points of interaction between elite and popular culture who, starting from the second half of the eighteenth century, often reflected both directly and in a written form on the cultural practices of the population of villages and market towns. The theoretical questions and possible approaches are centered around the complex relations of the priest and the community, their harmonious or conflict-ridden co-existence, questions of sacral economy, stereotypes of the “good priest” and the “bad priest” as shaped from above and from below, the subtleties of “priest-keeping”, the intentions related to preserving traditions and creating new customs, and the different temperaments of priests in relation to these issues.
Carcinoma de células de Merkel
Authors: Rama Andrea Soledad , Neglia Vicenta , Abeldaño Alejandra
Published: May 2021

El carcinoma de células de Merkel (CCM) cutáneo es una neoplasia de curso agresivo, con tasas de mortalidad mayores que las del melanoma y un alto índice de recurrencia locorregional y de metástasis a distancia. Su incidencia es baja, pero en los últimos años se encuentra en aumento y se estima que continuará en ascenso.

Afecta con mayor frecuencia a pacientes añosos, en especial mayores de 65 años, con un ligero predominio en los varones. Su etiopatogenia está relacionada, por un lado, con la exposición a la radiación ultravioleta (RUV) y, por el otro, con la infección por un nuevo poliomavirus (MCPyV), el primero asociado a neoplasias en los seres humanos.

Suele aparecer como una lesión tumoral eritematosa, de consistencia firme y rápido crecimiento, asintomática, en áreas fotoexpuestas de la piel. Debido a que no presenta un rasgo distintivo, su sospecha clínica es baja y, en general, puede confundirse con lesiones benignas.

El diagnóstico se realiza mediante la clínica y el estudio histopatológico e inmunohistoquímico (IHQ) de la lesión. Con tinción de hematoxilina y eosina se observa un tumor compuesto por células basófilas pequeñas, de citoplasma escaso y con núcleos hipercromáticos. La IHQ presenta marcación positiva para la citoqueratina 20, con una elevada sensibilidad.

La extirpación quirúrgica de la lesión primaria es el tratamiento de elección. Las últimas recomendaciones incluyen el estudio histopatológico del ganglio centinela ante el diagnóstico de CCM para obtener una correcta estadificación. De acuerdo con el estadio, se procederá al abordaje terapéutico de forma interdisciplinaria.
Placa eritematodescamativa en el ángulo interno del ojo derecho
Authors: Meilinger Malena , Martínez Mariana , Pereyra Ana Celeste , Madeo Cecilia
Published: May 2021

Una mujer de 39 años, residente de una zona rural del Paraguay, con antecedentes de diabetes mellitus tipo 2, hipertensión arterial y mala adherencia al tratamiento, consultó por presentar una lesión dolorosa en el ángulo interno del ojo derecho, de 8 años de evolución.