bluuebunny/crossref_metadata_2025 huggingface dataset:
Desafíos de la gestión educativa en contexto de pandemia
Authors: Suarez Amaya Wendolin
Published: March 2021

En los últimos tiempos, un acontecimiento sin precedentes en la historia contemporánea ha trastocado los sistemas sociales, dejando al descubierto las vulnerabilidades en nuestro sistema educativo, principalmente en las zonas económicamente desfavorecidas. El covid- 19 llegó de manera intempestiva y obligó a dar cambios rotundos en la forma como se ha venido desarrollando el proceso de enseñanza-aprendizaje. La Unesco (2020) reporta que la pandemia ha afectado a “1.600 millones de alumnos en más de 190 países en todos los continentes. Los cierres de escuelas y otros centros de enseñanza han afectado al 94 % de los estudiantes de todo el mundo, una cifra que asciende al 99 % en países de ingreso bajo y mediano bajo”
Estrategias metodológicas para mejorar el trabajo cooperativo en estudiantes de educación secundaria, Cajamarca 2020
Authors: Mendoza Sánchez Juan Romelio , Mendoza Sánchez Blanca Flor
Published: March 2021

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Neuromarketing y decisión de compra en consumidores de la región Huánuco- Perú
Authors: Chicoma-Ruiz Giuliana del Pilar
Published: March 2021

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Características digitales - económicas en estudiantes universitarios en tiempos de COVID-19
Authors: Martel Carranza Christian Paolo , Zevallos Acosta Uladislao , Pajuelo Garay Paola , Chavez Matos Joel , Palma-Lozano Diana
Published: March 2021

Objetivo. Describir las características digitales - económicas de los estudiantes universitarios en tiempos de COVID-19. Métodos.  La investigación tuvo un enfoque cuantitativo del tipo básico, diseño y nivel observacional - descriptivo, se recolectaron datos por intermedio de una encuesta digital para conocer la variable de estudio en los estudiantes de la Universidad de Huánuco durante el periodo 2020.  Resultados. Se incluyen a 10 155 (100 %) estudiantes, un 58, 7 % del género femenino, el 81,7 % de la sede Huánuco, el 43,4 % cursó entre el V al VIII ciclo, un 25.3% del programa académico de Derecho y Ciencias Políticas. Respecto a los recursos digitales: un 46,8 % usa la laptop para sus sesiones de clase, el 51,4 % hace uso de conexión de internet móvil, el 36,1 % tienen capacidad de ancho de banda normal (4M a 10M); el 58 % se ubica en la zona urbana, mientras que el 84,9 % manifestó poseer problemas de conectividad y el mismo porcentaje indicó emplear accesorios para sus clases. En cuanto a los recursos económicos: los padres del 49,4 % de los estudiantes financian sus estudios, el 89,9 % manifestó que la pandemia afectó sus ingresos económicos y el 57,4 % considera que su continuidad educativa se vio afectada. En relación a la situación de salud, el 71,7 % no se encuentran en el grupo de riesgo de contraer Covid-9, un 63,1 % no utilizó pruebas de descarte, el 62,3 % manifestó que algún miembro de su familia fue contagiado y de este grupo el 9,3 % falleció. Conclusión. Existe un escenario complicado respecto a los recursos digitales, económicos y situación de salud por la que están atravesando los estudiantes universitarios por la presencia del COVID-19, y repercute en su formación profesional.
Design of microstrip coupled-line bandpass filter
Authors: Sasic Mubina , Imeci Sehabbedin Taha
Published: March 2021

This project contains basic information, design, 3D projection, simulation, and analysis of Microstrip Bandpass Filter. The filter was composed of the feed lines connected to the two ports with the parallel coupled lines between them. The separation between these elements is reduced to the minimum for the purpose of reducing the error. Ultimately, the microstrip bandpass filter was designed with a 400 MHz bandwidth. We end up with these result: at the 4.43 GHz, S11 parameter is -9.868 dB and S22 is -1.808 dB, while at the 4.83 GHz, S11 is -9.995 dB and S22 is -1.826 dB.
Designing and analyzing park sensor system for efficient and sustainable car park area management
Authors: Karakebelioglu Ahmet Faruk , Eren Ozkan , Koten Hasan , Alp Huseyin
Published: March 2021

Many problems have been seen in cities because of increasing vehicle density. One of these problems is vehicle density in parking lots. People look for empty parking areas and they spend too much time. While people look for empty parking areas, CO2 (carbon dioxide) emission and energy consumption increase due to density in parking lots. We worked to solve these problems by doing Magnetic Car Park Sensor. Magnetic Car Park Sensor is the system which detects cars in car parks. After cars detected with the system, the system sends information to center server and we can see information data in the system interface. The system helps people to find empty parking lots. As people find empty car park areas fastly, energy consumption and CO2 emission are decreased significantly.
A Review of CZTS Thin Film Solar Cell Technology
Authors: Islam Md. Fakhrul , Md Yatim Nadhrah , Hashim@Ismail Mohd Azman
Published: March 2021

Copper Zinc Tin Sulfide (CZTS) solar cells have recently attracted attention as a potential low-cost earth abundant replacement for CIGS cells. This is due to their constituent’s Zn and Sn are non-toxic and earth-abundant compare to the elements of In and Ga in CIGS. Thus, aiming to analyse solar cells free from the environmental contaminant, CZTS is viewed as a potential candidate as the absorber for the next generation thin film solar cells. However, the conversion efficiency of CZTS based solar cells reported which is relatively low (highest conversion efficiency recorded is 12.5%) from the theoretical conversion efficiency limit of 32.2%. This is due to the low fill factor (FF), open circuit voltage (Voc) and current density (Jsc). In this study analysis of the different CZTS based solar cells and its synthesis methods will be reviewed. The effect of the compositional change and various structure in the CZTS, different buffer layers with their interfaces are thoroughly studied. The challenges regarding improving the conversion efficiency of CZTS solar cells and their future in the thin film solar cell application are discussed.
Comentários acerca de alguns pontos do Projeto de Lei das Fake News sob a ótica da responsabilidade civil
Authors: Borges Gabriel Oliveira Aguiar , Longhi João Victor Rozatti , Martins Guilherme Magalhães
Published: March 2021

O presente trabalho almeja a discutir alguns pontos nevrálgicos do Projeto de Lei número 2630/10 (popularmente conhecido como Projeto de Lei das Fake News) no que diz respeito à Responsabilidade Civil. São eles o dever de guarda de registros em caso de encaminhamento em massa de mensagens, o devido processo e direito de recurso antes da exclusão de conteúdo, o código de conduta e a autorregulação regulada. Serão comentados, sob o prisma da Responsabilidade Civil, os artigos 10, 12, 25 e 30 do Projeto de Lei e, ao final, inseridas algumas sugestões de alterações na redação dos dispositivos.
Vulnerabilidad de la caficultura de Cundinamarca a la broca del café en diferentes eventos climáticos
Authors: Giraldo-Jaramillo Marisol , Montoya Esther Cecilia , Sarmiento-Herrera Ninibeth , Quiroga Mosquera Audberto , Espinosa-Osorio Juan Camilo , García-López Juan Carlos , Duque Orrego Hernando , Benavides Machado Pablo
Published: March 2021

Conocer la vulnerabilidad de una zona a la broca de café, teniendo claro que es una condición natural de esta y que, bajo ciertos escenarios climáticos, la plaga puede comportarse de una forma esperada, es una ventaja competitiva clara para los caficultores, pues podrán anticipar muchas decisiones de manejo. En este Avance Técnico consulte la vulnerabilidad del departamento de Cundinamarca a la broca del café en diferentes escenarios climáticos, Neutro, La Niña y El Niño.
A személyi állomány képzése 1996-tól napjainkig
Authors: Herbszt Krisztina
Published: March 2021

The author provides an overview of the training and education of Hungarian Prison Service’s officers in the past 20 years.
X-Ray-to-radio Offset Inference from Low-count X-Ray Jets
Authors: Reddy Karthik , Georganopoulos Markos , Meyer Eileen T.
Published: March 2021

Observations of positional offsets between the location of X-ray and radio features in many resolved, extragalactic jets indicates that the emitting regions are not cospatial, an important piece of evidence in the debate over the origin of the X-ray emission on kiloparsec scales. The existing literature is nearly exclusively focused on jets with sufficiently deep Chandra observations to yield accurate positions for X-ray features, but most of the known X-ray jets are detected with tens of counts or fewer, making detailed morphological comparisons difficult. Here we report the detection of X-ray-to-radio positional offsets in 15 extragalactic jets from an analysis of 22 sources with low-count Chandra observations, where we utilized the Low-count Image Reconstruction Algorithm. This algorithm has allowed us to account for effects such as Poisson background fluctuations and nearby point sources which have previously made the detection of offsets difficult in shallow observations. Using this method, we find that in 55% of knots with detectable offsets, the X-rays peak upstream of the radio, questioning the applicability of one-zone models, including the IC/CMB model for explaining the X-ray emission. We also report the nondetection of two previously claimed X-ray jets. Many, but not all, of our sources follow a loose trend of increasing offset between the X-ray and radio emission, as well as a decreasing X-ray-to-radio flux ratio along the jet.
Superflares, Chromospheric Activities, and Photometric Variabilities of Solar-type Stars from the Second-year Observation of TESS and Spectra of LAMOST
Authors: Tu Zuo-Lin , Yang Ming , Wang H.-F. , Wang F. Y.
Published: March 2021

In this work, 1272 superflares on 311 stars are collected from 22,539 solar-type stars from the second-year observation of the Transiting Exoplanet Survey Satellite (TESS), which almost covered the northern hemisphere of the sky. Three superflare stars contain hot Jupiter candidates or ultrashort-period planet candidates. We obtain γ = −1.76 ± 0.11 of the correlation between flare frequency and flare energy (

) for all superflares and get β = 0.42 ± 0.01 of the correlation between superflare duration and energy (T
duration ∝ E

β
), which supports that a similar mechanism is shared by stellar superflares and solar flares. Stellar photometric variability (R
var) is estimated for all solar-type stars, and the relation of

is included. An indicator of chromospheric activity (S-index) is obtained by using data from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) for 7454 solar-type stars. Distributions of these two properties indicate that the Sun is generally less active than superflare stars. We find that saturation-like feature of R
var ∼ 0.1 may be the reason for superflare energy saturating around 1036 erg. Object TIC 93277807 was captured by the TESS first-year mission and generated the most energetic superflare. This superflare is valuable and unique in that it can be treated as an extreme event, which may be generated by different mechanisms than other superflares.
Identification of Active Magnetic Reconnection Using Magnetic Flux Transport in Plasma Turbulence
Authors: Li Tak Chu , Liu Yi-Hsin , Qi Yi
Published: March 2021

Magnetic reconnection has been suggested to play an important role in the dynamics and energetics of plasma turbulence by spacecraft observations, simulations, and theory over the past two decades, and recently, by magnetosheath observations of MMS. A new method based on magnetic flux transport (MFT) has been developed to identify reconnection activity in turbulent plasmas. This method is applied to a gyrokinetic simulation of two-dimensional (2D) plasma turbulence. Results on the identification of three active reconnection X-points are reported. The first two X-points have developed bidirectional electron outflow jets. Beyond the category of electron-only reconnection, the third X-point does not have bidirectional electron outflow jets because the flow is modified by turbulence. In all cases, this method successfully identifies active reconnection through clear inward and outward flux transport around the X-points. This transport pattern defines reconnection and produces a new quadrupolar structure in the divergence of MFT. This method is expected to be applicable to spacecraft missions such as MMS, Parker Solar Probe, and Solar Orbiter.
VLBA Discovery of a Resolved Source in the Candidate Black Hole X-Ray Binary AT2019wey
Authors: Yadlapalli Yurk Nitika , Ravi Vikram , Yao Yuhan , Kulkarni S. R. , Brisken Walter
Published: March 2021

AT2019wey is a Galactic low-mass X-ray binary with a candidate black hole accretor first discovered as an optical transient by ATLAS in 2019 December. It was then associated with an X-ray source discovered by SRG/eROSITA and SRG/ART-XC instruments in 2020 March. After a brightening in X-rays in 2020 August, VLA observations of the source revealed an optically thin spectrum that subsequently shifted to optically thick, as the source continued to brighten in the radio. This motivated us to observe AT2019wey with the VLBA. We found a resolved source that we interpret to be a steady compact jet, a feature associated with black hole X-ray binary systems in hard X-ray spectral states. The jet power is comparable to the accretion-disk X-ray luminosity. Here, we summarize the results from these observations.
Прогностички фактори кај детската акутна лимфобластна леукемија- преглед на литература
Authors: Jovanovska Aleksandra , Martinova Kata
Published: March 2021

Во последните неколку декади е остварен значаен напредок во терапискиот исход кај детската акутна лимфобластна леукемија (АЛЛ), што резултира со денешно 5-годишно вкупно преживување кое достигнува до 90%. Овој импресивен успех се должи на примената на ефикасни, комбинирани хемотераписки режими и прецизна стратификација на пациентите во ризични групи според добро дефинирани прогностички фактори кои ги вклучуваат клиничките карактеристики присутни при дијагнозата, биолошките и генетските карактеристики на леукемиските клетки и раниот одговор на терапија. Пациентите кои се класифицираат во прогностичка група со низок ризик се третираат со помалку интензивна терапија, додека за тие со високо-ризични карактеристики се применуваат поагресивни режими. Минималната резидуална болест (МРБ) во моментов претставува најважен и независен предиктор на терапискиот исход. Во овој ревијален труд се опишани клиничките, биолошките карактеристики и раниот одговор на терапија како и актуелните сознанија кои ја поддржуваат нивната клиничка примена кај детската АЛЛ.
Long-distance dispersal of migrant butterflies to the Arctic Ocean islands, with a record of Nymphalis xanthomelas at the northern edge of Novaya Zemlya (76.95°N)
Authors: Bolotov Ivan N. , Mizin Ivan A. , Zheludkova Alisa A. , Aksenova Olga V. , Kolosova Yulia S. , Potapov Grigory S. , Spitsyn Vitaly M. , Gofarov Mikhail Y.
Published: March 2021

Although migrant butterflies are rare (or sporadically seen) guests on the Arctic Ocean islands, there is a slowly growing dataset on repeated occurrences of these insects in insular tundra and polar deserts. Altogether six long-distance migrant butterfly species were found to cross wide marine barriers north of the Arctic Circle (66.56°N), i.e.Vanessa atalanta,V. cardui,Nymphalis antiopa,N. xanthomelas,Aporia crataegi, andPieris napi. Migrant individuals ofV. carduidiscovered on Svalbard (up to 78.27°N in 1978) reflect the farthest dispersal event of butterflies to the Arctic ever reported. Our record ofN. xanthomelasat the northern margin of Novaya Zemlya (76.95°N) represents the northernmost finding of this species globally, reflecting the world’s second farthest record of northern poleward immigration of butterflies. This occurrence coincides with an exceptionally warm summer season, when the third highest July and second highest August air temperature occurred (since global records began in 1880). Furthermore, the immigration into Novaya Zemlya coincides with a population explosion and massive expansion ofN. xanthomelasin Siberia in 2019–2020. Our air current reconstructions indicate that this species most likely immigrated into Novaya Zemlya from mainland regions situated south-southeast (Polar Urals, Yugorsky Peninsula, and western Yamal) and east (Taymyr) of the archipelago. Overall, our findings reveal that long-distance dispersal events of butterflies to the Arctic islands are always linked to massive expansions of the corresponding species in mainland areas.
On the date of publication of Linnaeus’ second edition of “Fauna Svecica”
Authors: Zilli Alberto
Published: March 2021

It is shown that the correct year of publication of the 2nd edition of Linnaeus’ “Fauna Svecica” is 1761, not [1760].
Encyonopsis indonesica sp. nov. (Bacillariophyceae, Cymbellales), a new diatom from the ancient lake Matano (Sulawesi, Indonesia)
Authors: Kapustin Dmitry A. , Glushchenko Anton M. , Kociolek John P. , Kulikovskiy Maxim S.
Published: March 2021

A new species, Encyonopsis indonesica, is described from the ancient lake Matano, Sulawesi island, Indonesia. The morphology of this species was studied by means of light and scanning electron microscopy. E. indonesica has a remarkable valve ultrastructure. The valve surface is ornamented with numerous longitudinal siliceous ribs and siliceous verrucae. Valve face delineated from the mantle by a thickened marginal ridge. Raised sterna border the raphe branches. Raphe is distinctly undulate with distal ends hooked strongly to the ventral side. The only similar species to E. indonesica is Amphora dissimilis described from New Caledonia. Comparison of both taxa is given and A. dissimilis is transferred to Encyonopsis. The taxonomic placement of both taxa is evaluated, and the phenomenon of external siliceous ornamentation is discussed.
Souffrances primitives et enveloppes familiales en périnatalité
Authors: Mellier Denis
Published: March 2021

La naissance est le lieu privilégié de la transmission transgénérationnelle. Elle doit permettre aux parents de trouver l’étayage auquel ils ont droit. Elle se caractérise par un bouleversement identitaire qui affecte le bébé, ses parents et plus largement sa famille, ainsi que les professionnels qui interviennent auprès d’eux. Les souffrances familiales concomitantes sont un risque pour la construction d’enveloppes psychiques différenciées pour chaque sujet et groupe. Elles alimentent la psychopathologie et sont à reconnaître et contenir. Une observation dans une famille l’illustre. En périnatalité des dispositifs pluridisciplinaires tentent de s’ajuster à la défaillance des enveloppes ; ils portent l’inquiétude et le désir du bébé en assumant une place transférentielle grand-parentale. Au niveau sociétal, la brièveté des congés parentaux, l’individualisme et la place grandissante des professionnels conditionnent cette vulnérabilité.
La vulnérabilité familiale en périnatalité, sa nécessité et ses aléas
Authors: Aburto Paola , Darchis Élisabeth , Diaz Audrey , Nauleau Marie-Luce , Sablayrolles Perrine , Royer Marie-Laure
Published: March 2021

La vulnérabilité est souvent vue, à tort, comme une entrave, un élément délétère. En périnatalité, elle est mise au cœur du processus dynamique à l’œuvre dans la construction d’une famille et elle favorise le travail de régression et de transformation au cours de la grossesse et après la naissance. L’absence de traitement par la famille de ses vulnérabilités majeures conduit à des souffrances qui sont illustrées à travers des situations cliniques. Les institutions et les professionnels formés à l’écoute familiale périnatale apparaissent indispensables pour accompagner ces familles en leur permettant de réaménager l’héritage transgénérationnel pour accueillir le bébé.
La vulnérabilité du thérapeute face à la vulnérabilité familiale
Authors: Cano Balcerzak Evelyne
Published: March 2021

M. et Mme S. ont adopté un bébé, Zoé, après l’échec d’un parcours de Procréation Médicalement Assistée. Une maladie chronique s’est développée chez l’enfant à l’âge de 4 ans. Déclencheur traumatique, cette pathologie a généré angoisse de mort et inquiétante étrangeté. Au-delà de Zoé, petite fille adoptée, familière et étrangère à la fois, le transgénérationnel a fait retour sous la forme du fantasme de toxicité familiale. Cette vignette clinique met en évidence la résonance psychique entre la vulnérabilité de la famille et celle de la thérapeute ainsi que ses effets sur le processus de soin. Mais se sentir vulnérables ensemble, dans le néo-groupe, ne peut être thérapeutique qu’à condition que le thérapeute familial puisse s’en extraire en dehors des séances. Ce travail d’élaboration psychique permettant de réamorcer la pensée n’est possible qu’à l’aide de prise de notes, supervisions, création artistique.
Issues in Measuring Critical Thinking: Meeting the Challenge
Authors: Rane-Szostak Donna , Robertson Julie Fisher
Published: March 2021

ABSTRACT

Recent changes in NLN criteria for accreditation highlight the need to measure growth in critical thinking (CT). Choosing the most appropriate methods to measure CT within a specific nursing program poses significant challenges for nurse educators. This article explores major issues in measuring critical thinking, including: a) developing a clear definition of this concept, b) matching the definition to program goals, c) using value-added assessment and d) deciding between norm versus criterion-referenced methods.

Detailed discussion focuses on decisions that must be made regarding instrument selection. Issues such as reliability and validity of measures, sensitivity of test scores to expected growth, the importance b) matching methods to program CT definition, and the need for adequate resources are described. Strengths and weaknesses of commercial instruments that measure critical thinking, as well as the alternative techniques of portfolios and performance assessment, are reviewed,
Two finite difference methods based on an H2N2 interpolation for two-dimensional time fractional mixed diffusion and diffusion-wave equations
Authors: Shen Jinye , Gu Xian-Ming
Published: March 2021

In this work, two fully novel finite difference schemes for two-dimensional time-fractional mixed diffusion and diffusion-wave equation (TFMDDWEs) are presented. Firstly, a Hermite and Newton quadratic interpolation polynomial have been used for time discretization and central quotient has used in spatial direction. The H2N2 finite difference is constructed. Secondly, in order to increase computational efficiency, the sum-of-exponential is used to approximate the kernel function in the fractional-order operator. The fast H2N2 finite difference is obtained. Thirdly, the stability and convergence of two schemes are studied by energy method. When the tolerance error \begin{document}$ \epsilon $\end{document} of fast algorithm is sufficiently small, it proves that both of difference schemes are of \begin{document}$ 3-\beta\; (1<\beta<2) $\end{document} order convergence in time and of second order convergence in space. Finally, numerical results demonstrate the theoretical convergence and effectiveness of the fast algorithm.
Global dynamics of the solution for a bistable reaction diffusion equation with nonlocal effect
Authors: Chang Meng-Xue , Han Bang-Sheng , Fan Xiao-Ming
Published: March 2021

This paper is devoted to studying the Cauchy problem corresponding to the nonlocal bistable reaction diffusion equation. It is the first attempt to use the method of comparison principle to study the well-posedness for the nonlocal bistable reaction-diffusion equation. We show that the problem has a unique solution for any non-negative bounded initial value by using Gronwall's inequality. Moreover, the boundedness of the solution is obtained by means of the auxiliary problem. Finally, in the case that the initial data with compactly supported, we analyze the asymptotic behavior of the solution.
Instability and bifurcation of a cooperative system with periodic coefficients
Authors: Hou Tian , Wang Yi , Xie Xizhuang
Published: March 2021

In this paper, we focus on a linear cooperative system with periodic coefficients proposed by Mierczyński [SIAM Review 59(2017), 649-670]. By introducing a switching strategy parameter $ \lambda $ in the periodic coefficients, the bifurcation of instability and the optimization of the switching strategy are investigated. The critical value of unstable branches is determined by appealing to the theory of monotone dynamical system. A bifurcation diagram is presented and numerical examples are given to illustrate the effectiveness of our theoretical result.
Identifying and determining crowdsourcing service strategies: An empirical study on a crowdsourcing platform in China
Authors: Zhang Xu , Peng Zhanglin , Zhang Qiang , Tang Xiaoan , Pardalos Panos M.
Published: March 2021

The crowdsourcing platforms, as mediators and service providers, play a critical role in crowdsourcing initiatives. The service quality of a platform has a direct impact on solver satisfaction, and ultimately affects the platform's continuous operation. Service quality can be measured by service quality attributes (SQAs). Thus, identifying and quantifying SQAs are crucial to enhance solver satisfaction. Besides, choosing pertinent strategies and determining priorities for the SQAs are another core issue. To address these issues, this study proposes a novel decision framework that combines the Fuzzy Analytical Kano (FAK) and the Importance-performance analysis (IPA) models. Firstly, 24 related SQAs are identified from five dimensions of service quality. Secondly, we quantify these SQAs into a polar form representation scheme in accordance with the FAK model. In addition, the pertinent service strategies and priorities of the SQAs are confirmed by using the IPA model and Kano categories. Finally, decision priority rules for corresponding strategies and priorities of SQAs are constructed. An empirical study is presented to demonstrate our proposed decision framework on ZBJ platform, which is one of the most widely used online crowdsourcing platform in China.
Evaluación de escombreras de mármoles para su aprovechamiento como agregado en una estructura de pavimento, Córdoba, Argentina
Authors: Bin Ignacio Hugo , Poklepovic María Fernanda , Coniglio Jorge Enrique , Demartis Manuel , Carranza Facundo , Pinotti Lucio Pedro , D’Eramo Fernando Javier
Published: March 2021

En este trabajo se caracterizaron 10.000 toneladas de escombreras de mármoles a fin de definir sus parámetros físico-mecánicos y mineralógicos y determinar su aptitud como componente principal en capas granulares de una estructura de pavimento. Aunque los coeficientes Los Ángeles (41-53%) exceden lo permitido en la especificación de referencia, la granulometría, plasticidad y California Bearing Ratio (C.B.R.) (76, 83, 100% al 97, 98 y 100% de la densidad máxima, respectivamente) satisfacen lo especificado, con condicionamientos. Por consiguiente, con un simple cribado, este material de escombrera podría ser utilizado en terraplenes, sub-bases y bases granulares de carreteras, constituyendo una alternativa: a) Ambientalmente sostenible: porque evita nuevas explotaciones y elimina un potencial pasivo ambiental; b) Técnicamente viable: ya que la capacidad portante de las capas granulares no se vería afectada; c) Económicamente conveniente: porque aporta un valor agregado a un sub-producto hoy desechado y reduce costos de explotación y transporte.
Estudio experimental del rendimiento térmico de la cavidad de aire de fachadas ventiladas opacas en condiciones de viento extremo: estudio de caso Bakú
Authors: Mammadova Gulchohra , Sharifov Arif , Akbarova Samira
Published: March 2021

El uso generalizado de fachadas opacas ventiladas, hace que la investigación de su rendimiento térmico sea relevante porque existe la necesidad de una evaluación objetiva de su eficiencia energética en la etapa operativa. El artículo está dedicado a la investigación experimental a gran escala de las características térmicas de una cavidad de aire del sistema de fachada ventilada de forma natural con juntas cerradas, bajo condiciones extremas de viento, comparando las características térmicas de la cavidad de aire, se basa en cálculos que cumplen con los estándares de construcción y en los resultados del experimento a escala. Se utilizaron equipos de medición Testo 435 y 417. Se obtuvo una ecuación empírica aproximada entre la velocidad del viento cuando es superior a 7 m/s y la velocidad del aire de la cavidad. Un aumento en la velocidad del viento a lo largo de la pared conduce a un aumento en la velocidad del aire de la cavidad, que se acerca a 1-1.5 m/s y una disminución en la resistencia térmica. Los resultados del cálculo, se pueden usar para el control experimental de las características térmicas de la fachada con el fin de cumplir con una auditoría energética multidisciplinaria del edificio.
Connotation Analysis and Paradigm Shift of Teaching Design under Artificial Intelligence Technology
Authors: Huang Jian , Shen Gang , Ren Xiping
Published: March 2021

The influence of artificial intelligence technology on teaching design is explored to improve teaching efficiency. First, artificial intelligence is introduced and its impacts on teaching design are analyzed. Second, the connotation of the paradigm of teaching design and the paradigm shift for teaching design are explored using the paradigm shift analysis framework. Finally, the changes in teaching design under artificial intelligence are analyzed, and the impacts of artificial intelligence on teaching activities are investigated. The results show that the application of artificial intelligence technology has led to different levels of change in the six elements of teaching design, including teaching objectives, service objects (teachers and students), teaching content, teaching media, teaching environment, and teaching evaluation. The connotation and paradigm shift of the teaching design are introduced from the four elements based on the artificial intelligence technology. It is found that artificial intelligence technology can enhance the learning ability and cognitive ability of students to a certain extent while improving the teaching efficiency and learning efficiency. The investigation proves that the teaching design based on artificial intelligence technology can be applied to teaching activities, thereby improving the learning efficiency of students and the teaching efficiency of teachers.
The Use of Artificial Intelligence Combined with Cloud Computing in the Design of Education Information Management Platform
Authors: Li Qiang
Published: March 2021

Based on cloud computing theory and service-oriented architecture (SOA) design pattern, a smart education management platform is designed by using cloud computing and artificial intelligence technology. The platform is deployed in the server cluster environment, with Hadpoop managed storage cluster as the data storage center. For the education management, education portal and remote classroom, the corresponding services are launched, which has the advantages of intelligent and efficient, massive data access and intelligent collaborative management. The test results show that the platform can be used normally in the ports of computer, mobile phone and tablet computer, and can successfully complete the basic operations such as user registration and login, educational administration, and content storage. The results of database stress test show that the total time consumption of sequential read, sequential write, random read and random write is 752s, 312s, 968s and 211s, respectively when millions of simulated data are inserted into the database, which indicates that the database can support large-scale data access. The stress test results of content storage service show that when the number of clients is adjusted to 500, 1000 and 3000, the output quantity of each read-write interface can be maintained at about 3500 pages/min in 60s, indicating that the system can still run stably under the condition of high concurrency. The management platform discussed has practical significance to promote the development of intelligent and information-based education management.
Evaluation of College Students' Innovation and Entrepreneurial Ability for the Science and Technology Service Industry
Authors: Qi Yanming , Liang Tong , Chang Yongzhi
Published: March 2021

The development level of the science and technology service industry is an important factor affecting the development speed of regional economy and the formation of innovation ability and development potential of the region, and the construction of talent team is the core and foundation for the development of the science and technology service industry. To measure such ability, this paper constructed an evaluation model for the innovation and entrepreneurial ability (IEA) of college students. First, a corresponding evaluation index system was established, the quantifiable index data were subject to factor analysis, and the structural equation model was subject to regression estimation using the maximum likelihood method. Then, from multiple aspects such as the level of the colleges, the major of the students, and the gender of the students, this paper comprehensively analyzed college students’ IEA. And finally, based on one-way analysis of variance, the differences between indexes were analyzed, and a path analysis model was established to analyze the relationship between the science and technology service industry’s regional industrial scale, resource input, informatization level, spatial agglomeration degree, and college students’ IEA.
Scratch Teaching Mode of a Course for College Students
Authors: Lu Ying
Published: March 2021

Maker education is of great significance for the fostering of innovative talents. At present, however, most of the maker courses in colleges and universities are with such problems as single teaching functions, non-uniform course management system and unsmooth course teaching. Therefore, how to innovate in concept, system and mode to adapt them to the new demand of the development of higher education is a realistic problem to be addressed by maker course. Guided by the teaching concept of STEAM, our study establishes maker education oriented on learners and implements the hands-on operating experience of “creating, delighting, cooperating and sharing”. Meanwhile, the teaching design of Scratch programming education dominated by game-based learning is taken as an auxiliary teaching measure. Moreover, four teaching modules, i.e., design development teaching, artistic design teaching, manual production teaching and 3D printing teaching, are also created. On this basis, a model for the development elements of the thinking of maker education is proposed to evaluate the training effect of innovation ability by this teaching practice. The results show that the proposed teaching mode can effectively improve students’ learning ability and innovative thinking. Hopefully, the present study can offer a reference for researchers and practitioners of maker education.
Smart-Glass Glazing using Arduino and Android Application
Authors: Jabbar Mohammed M. , Zaki Salim M
Published: March 2021

The parts of buildings most susceptible to light and heat are the windows, which are necessary for basic cooling and heating. A huge amount of electrical energy is used to power air conditioners to adjust the inside temperature of residential buildings, while appropriate glazing techniques and materials can be used to reduce energy consumption. There are classic techniques used for tinting glass in buildings and cars, but they all continue to use fixed techniques with one degree of glazing. Users cannot adjust the glazing of these glasses in response to the intensity of sunlight either automatically or by hand. In this research, a modern technique is proposed to allow users to automatically control a glass’s glazing through sensors and Android application with a microcontroller. Arduino microcontroller is used along with a special film polymer dispersed liquid crystals (PDLC) material coating the glasses to enable tinting. The results show adjustable levels of tinting with PDLC film being enabled.
Un dispositif d’accompagnement dans la transition lycée-université (IUT) : enjeux et effets
Authors: Bournaud Isabelle , Pamphile Patrick
Published: March 2021

Accompagner les primo-entrants dans la transition lycée-université est aujourd’hui une préoccupation importante des universités. Cet article présente un dispositif d’accompagnement de primo-entrants dans une formation universitaire. Ce dispositif repose, d’une part sur des ateliers visant à faire réfléchir les primo-entrants sur leurs méthodes de travail au regard des exigences universitaires, d’autre part sur diverses activités pédagogiques qui sont déployées dans les enseignements disciplinaires. Le dispositif a été évalué au regard des résultats académiques au semestre 1 (validation/échec, abandon) et de l’évolution de la perception de maîtrise des étudiants sur les thèmes abordés dans les ateliers. Si les résultats ne permettent pas de dire que le dispositif a eu un impact sur les résultats académiques au semestre 1, en revanche le taux d’abandon a été significativement réduit. Par ailleurs, les ateliers ont permis de réduire l’hétérogénéité entre les étudiants concernant leur perception de maîtrise de méthodes de travail adaptées au contexte universitaire.
A Relação entre o Uso de Jogos Digitais Online e Sintomas de Ansiedade em Crianças e Adolescentes
Authors: Marques da Rosa Laura , Giacobo Serra Rodrigo
Published: March 2021

O presente trabalho tem como objetivo investigar a relação do uso de jogos digitais online por crianças e adolescentes com sintomas de ansiedade, tendo em vista a relevância da temática na atualidade. Para tanto, após a aplicação de um questionário online em uma amostra de 50 crianças e adolescentes de 10 a 16 anos de idade, estudantes de uma escola pública brasileira, foram utilizados instrumentos como um questionário de perfil elaborado pelos autores e a Escala de Transtornos relacionados à Ansiedade Infantil (SCARED) para a investigação da existência da associação do uso de jogos online e sintomas de ansiedade. Dos 50 participantes, 41 (82%) apresentaram sintomas de ansiedade e 42 (88%) fazem uso de jogos digitais online. Foi encontrada correlação negativa significativa entre o tempo de uso de jogos virtuais e sintomas de ansiedade (? = -0,526; p0,01). Os resultados obtidos mostram que o uso de jogos digitais online é encorajado pelos sintomas de ansiedade, funcionando como uma estratégia de enfrentamento de esquiva dos sintomas ansiosos. Portanto, quanto mais tempo as crianças e adolescentes jogam, mais evitam situações potencialmente ameaçadoras e, dessa forma, apresentam menos sintomas ansiosos.
HRIS Readiness Among Faculties in B Schools for Human Development
Authors: C. Nagadeepa , Shaji Sibi
Published: March 2021

Human resource departments implementing ICTs is becoming a common phenomenon in corporations and it's referred to as human resource information system (HRIS). In the digital era, people are shifting from human involvement to digital involvement. HRIS transforms the HR service delivery using web-based technology. HR departments are able to provide effective services when they utilize HRIS. This chapter focuses on the digital technology used for human resource management in b-schools. It is understood that there are plenty of HRIS tools that are available to be used in the educational institutions. For the current study, the researchers focused the study toward the b-schools in India. The respondents were employees of various b-schools in Bangalore. This study considered 120 employees (low, middle, and upper level) from various b-schools. This led to the understanding that there is a very high rate of effectiveness in the usage of HRIS tool in any institution, which is proved using the technology acceptance model (TAM).
The Effect of Learning Expectations and Internet Speed on University Student Moodle Usage
Authors: Kissi Philip Siaw
Published: March 2021

Several higher education institutions have combined Moodle and face-to-face instruction to support and assist student learning. However, the purpose of using Moodle will be appreciated if factors influencing the use of this learning platform are known. Therefore, this chapter investigated the effect of learning expectation and internet speed on university student Moodle usage and further examined the mediating role of perceived fun features of the Moodle. This present study employed a cross-sectional survey design with 327 selected university students. Data collected were analysed using structural equation modelling (SEM). The results revealed that internet speed, fun features, and learning expectation have a significant impact on university student Moodle usage. Furthermore, the findings from the analysis of mediation showed that Moodle perceived fun features mediate the relationship between learning expectation and Moodle usage in higher education. The implication of the results and further study avenues are discussed.
MOOCs in Higher Education
Authors: Pant Harsh Vardhan , Lohani Manoj Chandra , Pande Jeetendra
Published: March 2021

Online education has gained a lot of acceptance among the learners in the recent past. The advances in technology and changing demand from students and business as well as the possibility for reducing costs and generating income has led to a MOOC explosion. Over the last years, massive open online courses (MOOCs) have received a great deal of attention from the academic community, business, and the media, especially after the World Health Organization (WHO) officially declared COVID-19 as a pandemic in March 2020. The pandemic has caused educational disruption across the globe. Educational institutes faced with the challenge of maintaining the continuity of learning and were almost forced to switch to the online mode. The seemingly simple and immediate solution is to conduct school remotely using online resources. The aim of this study is to investigate the current trends and prediction with respect to the adoption of MOOCs in the Indian higher education system and identify various influencing factors facilitating this adoption.
Proposal of a Technological Platform to Support the Activities of a Charity Organization
Authors: Cunha Alexandre , Almeida Fernando
Published: March 2021

Nonprofit organizations are constantly challenged to find new ways of finding new donors and sources of funding for their solidarity actions. The traumatic events that occurred in the summer of 2017 in Portugal that caused more than 100 deaths consumed by the fires caused these organizations to have difficulties in coordinating the whole wave of solidarity generated in the community. In this sense, this study has developed a technological platform based exclusively on free technologies that allowed these entities to receive donations and manage this whole process. The application developed enables the reception of anonymous donations and monitoring the status of each donation. Furthermore, several requirements in terms of compatibility with mobile devices, usability, security, and privacy were implemented in the platform.
Rural Face and Sustainable Urban Liveability
Authors: Shafqat Ramisa
Published: March 2021

The present research investigates the significance of ‘rural face' from the lens of liveability and analyses what urban theorists can learn from this concept to overcome the unsustainability crisis of the present urban paradigm. Rural face attributes are discussed in terms of tangible (ecological and economical) and intangible (social) dimensions and linked to the sustainability principles they entail. The rustic environment, practices, livelihood, folklore, and culture are examined using the example of rural areas in Pakistan. This research concludes that for urban sustainability to become a reality it needs to assimilate attributes of rural face into the city realm and prompts rethinking the rural-urban relationship from a different perspective.
Kirlian Experimental Analysis and IoT
Authors: Rastogi Rohit , Saxena Mamta , Chaturvedi Devendra K. , Gupta Mayank , Rastogi Akshit Rajan , Rastogi Mukund , Sharma Ankur , Sagar Sheelu
Published: March 2021

Our entire body, including the brain and nervous system, works with the help of various kinds of biological stuff which includes positively charged ions of elements like sodium, potassium, and calcium. The different body parts have different energy levels, and by measuring the energy level, we can also measure the fitness of an individual. Moreover, this energy and fitness are directly related to mental health and the signals being transmitted between the brain and other parts of the body. Various activities like walking, talking, eating, and thinking are performed with the help of these transmission signals. Another critical role played by them is that it helps in examining the mechanisms of cells present at various places in the human body and signaling the nervous system and brain if they are properly functioning or not. This manuscript is divided into two parts where, in the first part, it provides the introduction, background, and extensive literature survey on Kirlian experiments to measure the human's organ energy.
Traumatic Brain Injury Update
Authors: Scarboro Maureen , McQuillan Karen A.
Published: March 2021

Traumatic brain injury is a devastating, life-changing event in most cases. After the primary brain insult, it is helpful to use evidence-based monitoring techniques to guide implementation of essential interventions to minimize secondary injury and thereby improve patient outcomes. An update on multimodal neuromonitoring is provided in this narrative review, with discussion of tools and techniques currently used in the treatment of patients with brain injury. Neuroprotective treatments, from the well-studied targeted temperature management to new potential therapeutics under investigation, such as glyburide, also are presented.
Pulmonary embolism in patients with severe COVID-19 treated with intermediate- to full-dose enoxaparin: A retrospective study
Authors: Scarduelli Cleante , Inglese Francesco , Beccaria Massimiliano , Speafico Fabio , Garuti Martina , Pecoriello Antonietta , Cervi Giulia , Greco Graziana , Scarduelli Sara , Lucchini Giuseppe , De Donno Giuseppe , Borghi Claudio
Published: March 2021

Coronavirus disease (COVID-19) may predispose patients to pulmonary embolism (PE), despite standard thromboprophylaxis. Our retrospective study aimed to report the prevalence of PE in patients with COVID-19 and severe respiratory failure (SRF) treated with intermediate- to full-dose enoxaparin. We analyzed data from patients with COVID-19 pneumonia and SRF admitted to our Respiratory Intensive Care Unit (RICU) from February 27 to April 20, 2020. All patients received at least intermediate-dose enoxaparin (40 mg twice daily). Computed tomography pulmonary angiography (CTPA) was used to detect PE. Ninety-two patients with COVID-19 pneumonia and SRF were admitted to our RICU. Twenty-two patients underwent CTPA (24 %), 11 of whom had PEs (12%). We hypothesize that the enoxaparin treatment may be responsible for the lower prevalence of PE as compared to previous reports of similar patients, even if our report had several limitations, mainly the small sample size.