bluuebunny/crossref_metadata_2025 huggingface dataset:
Equivalent CO2 Emission and Cost Analysis of Green Self-Compacting Rubberized Concrete
Authors: Kelechi Sylvia E. , Adamu Musa , Mohammed Abubakar , Obianyo Ifeyinwa I. , Ibrahim Yasser E. , Alanazi Hani
Published: December 2021

Global warming and climate changes are the major environmental challenges globally. With CO2 emission being one of the main greenhouse gases emitted to the environment, and cement and concrete production amounting to about 10% of the global CO2 emission, there is a need for the construction industry to utilize an environmentally sustainable material as an alternative to cement. This study analyzed the cost, CO2 emission and strength properties of green self-compacting concrete (SCC) ternary blend containing fly ash, calcium carbide residue (CCR), and crumb rubber (CR) as a replacement material by volume of cement, cementitious material, and fine aggregate, respectively. Cement was replaced with fly ash at 0% and 40% by volume. CCR was used as a replacement at 5% and 10% by volume of cementitious materials, CR replaced fine aggregate in proportions of 10% and 20% by volume. The result indicated that the mix with 0% fly ash and 20% CR replacement of fine aggregate was the most expensive and had the highest CO2 emission. However, the mix with 10% CR, 40% fly ash, and 10% CCR had the lowest CO2 emission and was therefore the greenest SCC mix. The 28-day maximum compressive strength of 45 MPa was achieved in a mix with 0% CR, 0% fly ash, and 10% CCR, while the utmost 28-day splitting tensile strength of 4.1 MPa was achieved with a mix with 10% CR, 0% fly ash, and 5% CCR, and the highest flexural strength at 28 days was 6.7 MPa and was also obtained in a mix with 0% CR, 0% fly ash, and 5% CCR. In conclusion, a green SCC can be produced by substituting 40% cement with fly ash, 10% fine aggregate with CR, and 10% CCR as a replacement by volume of cementitious material, which is highly affordable and has an acceptable strength as recommended for conventional SCC.
Analysis of Bus Fare Structure to Observe Modal Shift, Operator Profit, and Land-Use Choices through Combined Unified Transport Model
Authors: Ali Nazam , Nakayama Shoichiro , Yamaguchi Hiromichi
Published: December 2021

In order to design sustainable urban transport systems, the inclusion of the behaviors of different stakeholders is imperative. In this study, we formulated the interactions of behaviors between transport operator, landowner, workplace, residence, route and mode choices, and location of firms and businesses through a combined unified model of land-use and transport system. The commuters have two mode choices for traveling: private car and public bus. They are inclined to choose a transit mode with minimum traveling costs. We combined two models, maximization of operator profit constrained by bus frequency, while maintaining the formulation of other stakeholders through an assignment sub-model. The resulting formulation is bi-level, which is optimally solved for a small-sized instance containing two zones. The findings suggest that if the bus fare is reduced, the demand of public bus is increased. However, the operators’ profit is optimized within a certain range of fares and is lowered when the fare is too low or too high. It is determined that maximum bus frequency does not guarantee maximum profit to the service operator. The impacts of traveling costs on residence choice behavior suggest that if link fares are more, many of people opt not to travel between different zones. The analysis results presented in this paper are calculated for two types of link fares: a fixed fare (30 currency), and a range of link fare (5 to 100 currency). Different variants of the same formulation can be applied for real settings to better comprehend the nature of the model and its applications.
Comparative Life Cycle Assessment of Mass Timber and Concrete Residential Buildings: A Case Study in China
Authors: Chen Cindy X. , Pierobon Francesca , Jones Susan , Maples Ian , Gong Yingchun , Ganguly Indroneil
Published: December 2021

As the population continues to grow in China’s urban settings, the building sector contributes to increasing levels of greenhouse gas (GHG) emissions. Concrete and steel are the two most common construction materials used in China and account for 60% of the carbon emissions among all building components. Mass timber is recognized as an alternative building material to concrete and steel, characterized by better environmental performance and unique structural features. Nonetheless, research associated with mass timber buildings is still lacking in China. Quantifying the emission mitigation potentials of using mass timber in new buildings can help accelerate associated policy development and provide valuable references for developing more sustainable constructions in China. This study used a life cycle assessment (LCA) approach to compare the environmental impacts of a baseline concrete building and a functionally equivalent timber building that uses cross-laminated timber as the primary material. A cradle-to-gate LCA model was developed based on onsite interviews and surveys collected in China, existing publications, and geography-specific life cycle inventory data. The results show that the timber building achieved a 25% reduction in global warming potential compared to its concrete counterpart. The environmental performance of timber buildings can be further improved through local sourcing, enhanced logistics, and manufacturing optimizations.
Data-Driven Analytics Leveraging Artificial Intelligence in the Era of COVID-19: An Insightful Review of Recent Developments
Authors: Majeed Abdul , Hwang Seong Oun
Published: December 2021

This paper presents the role of artificial intelligence (AI) and other latest technologies that were employed to fight the recent pandemic (i.e., novel coronavirus disease-2019 (COVID-19)). These technologies assisted the early detection/diagnosis, trends analysis, intervention planning, healthcare burden forecasting, comorbidity analysis, and mitigation and control, to name a few. The key-enablers of these technologies was data that was obtained from heterogeneous sources (i.e., social networks (SN), internet of (medical) things (IoT/IoMT), cellular networks, transport usage, epidemiological investigations, and other digital/sensing platforms). To this end, we provide an insightful overview of the role of data-driven analytics leveraging AI in the era of COVID-19. Specifically, we discuss major services that AI can provide in the context of COVID-19 pandemic based on six grounds, (i) AI role in seven different epidemic containment strategies (a.k.a non-pharmaceutical interventions (NPIs)), (ii) AI role in data life cycle phases employed to control pandemic via digital solutions, (iii) AI role in performing analytics on heterogeneous types of data stemming from the COVID-19 pandemic, (iv) AI role in the healthcare sector in the context of COVID-19 pandemic, (v) general-purpose applications of AI in COVID-19 era, and (vi) AI role in drug design and repurposing (e.g., iteratively aligning protein spikes and applying three/four-fold symmetry to yield a low-resolution candidate template) against COVID-19. Further, we discuss the challenges involved in applying AI to the available data and privacy issues that can arise from personal data transitioning into cyberspace. We also provide a concise overview of other latest technologies that were increasingly applied to limit the spread of the ongoing pandemic. Finally, we discuss the avenues of future research in the respective area. This insightful review aims to highlight existing AI-based technological developments and future research dynamics in this area.
Audio Encryption Algorithm Based on Chen Memristor Chaotic System
Authors: Dai Wanying , Xu Xiangliang , Song Xiaoming , Li Guodong
Published: December 2021

The data space for audio signals is large, the correlation is strong, and the traditional encryption algorithm cannot meet the needs of efficiency and safety. To solve this problem, an audio encryption algorithm based on Chen memristor chaotic system is proposed. The core idea of the algorithm is to encrypt the audio signal into the color image information. Most of the traditional audio encryption algorithms are transmitted in the form of noise, which makes it easy to attract the attention of attackers. In this paper, a special encryption method is used to obtain higher security. Firstly, the Fast Walsh–Hadamar Transform (FWHT) is used to compress and denoise the signal. Different from the Fast Fourier Transform (FFT) and the Discrete Cosine Transform (DCT), FWHT has good energy compression characteristics. In addition, compared with that of the triangular basis function of the Fast Fourier Transform, the rectangular basis function of the FWHT can be more effectively implemented in the digital circuit to transform the reconstructed dual-channel audio signal into the R and B layers of the digital image matrix, respectively. Furthermore, a new Chen memristor chaotic system solves the periodic window problems, such as the limited chaos range and nonuniform distribution. It can generate a mask block with high complexity and fill it into the G layer of the color image matrix to obtain a color audio image. In the next place, combining plaintext information with color audio images, interactive channel shuffling can not only weaken the correlation between adjacent samples, but also effectively resist selective plaintext attacks. Finally, the cryptographic block is used for overlapping diffusion encryption to fill the silence period of the speech signal, so as to obtain the ciphertext audio. Experimental results and comparative analysis show that the algorithm is suitable for different types of audio signals, and can resist many common cryptographic analysis attacks. Compared with that of similar audio encryption algorithms, the security index of the algorithm is better, and the efficiency of the algorithm is greatly improved.
Acute Liver Failure after Ingestion of Fried Rice Balls: A Case Series of Bacillus cereus Food Poisonings
Authors: Schreiber Nikolaus , Hackl Gerald , Reisinger Alexander C. , Zollner-Schwetz Ines , Eller Kathrin , Schlagenhaufen Claudia , Pietzka Ariane , Czerwenka Christoph , Stark Timo D. , Kranzler Markus , Fickert Peter , Eller Philipp , Ehling-Schulz Monika
Published: December 2021

Bacillus cereus foodborne intoxications and toxicoinfections are on a rise. Usually, symptoms are self-limiting but occasionally hospitalization is necessary. Severe intoxications with the emetic Bacillus cereus toxin cereulide, which is notably resistant heat and acid during cooking, can cause acute liver failure and encephalopathy. We here present a case series of food poisonings in five immunocompetent adults after ingestion of fried rice balls, which were massively contaminated with Bacillus cereus. The patients developed a broad clinical spectrum, ranging from emesis and diarrhoea to life-threatening acute liver failure and acute tubular necrosis of the kidney in the index patient. In the left-over rice ball, we detected 8 × 106Bacillus cereus colony-forming units/g foodstuff, and cereulide in a concentration of 37 μg/g foodstuff, which is one of the highest cereulide toxin contaminations reported so far from foodborne outbreaks. This report emphasizes the potential biological hazard of contaminated rice meals that are not freshly prepared. It exemplifies the necessity of a multidisciplinary approach in cases of Bacillus cereus associated food poisonings to rapidly establish the diagnosis, to closely monitor critically ill patients, and to provide supportive measures for acute liver failure and—whenever necessary—urgent liver transplantation.
Eosinophilic Granulomatosis with Polyangiitis Relapse after COVID-19 Vaccination: A Case Report
Authors: Costanzo Giulia , Ledda Andrea Giovanni , Ghisu Alessandra , Vacca Matteo , Firinu Davide , Del Giacco Stefano
Published: December 2021

Background: We here describe the case of a 71-year-old Caucasian woman previously diagnosed with Eosinophilic Granulomatosis with Polyangiitis (EGPA) that had been treated with Mepolizumab, an anti-IL5 monoclonal antibody, since 2019 with a good clinical response. Methods: She had a mild COVID-19 in December 2020 and she tested negative for SARS-CoV-2 infection in only late January 2021. In April 2021 she received the first dose of mRNA BNT162b2 vaccine. Ten days later she developed myalgia, dyspnea and numbness of the limbs due to a relapse of EGPA that occurred during Mepolizumab treatment.
Protective Immunization of Atlantic Salmon (Salmo salar L.) against Salmon Lice (Lepeophtheirus salmonis) Infestation
Authors: Tartor Haitham , Karlsen Marius , Skern-Mauritzen Rasmus , Monjane Adérito Luis , Press Charles McLean , Wiik-Nielsen Christer , Olsen Rolf Hetlelid , Leknes Lisa Marie , Yttredal Karine , Brudeseth Bjørn Erik , Grove Søren
Published: December 2021

Vaccination against salmon lice (Lepeophtheirus salmonis) is a means of control that averts the negative effects of chemical approaches. Here, we studied the immunogenicity and protective effect of a vaccine formulation (based on a salmon lice-gut recombinant protein [P33]) against Lepeophtheirus salmonis infestation in Atlantic salmon in a laboratory-based trial. Our findings revealed that P33 vaccine can provide a measure of protection against immature and adult salmon lice infestation. This protection seemed to be vaccine dose-dependent, where higher doses resulted in lower parasitic infestation rates. We also provide immunological evidence confirming that P33-specific immune response can be triggered in Atlantic salmon after P33 vaccination, and that production of P33-specific antibodies in blood can be detected in vaccinated fish. The negative correlation between P33-specific IgM in salmon plasma and salmon lice numbers on vaccinated fish suggests that protection against lice can be mediated by the specific antibody in salmon plasma. The success of P33 vaccination in protecting salmon against lice confirms the possibility of employing the hematophagous nature of the parasite to deliver salmon-specific antibodies against lice-gut proteins.
Comparison of Long-Term Changes in Non-Linear Aggregated Drought Index Calibrated by MERRA–2 and NDII Soil Moisture Proxies
Authors: Mathivha Fhumulani , Mbatha Nkanyiso
Published: December 2021

This study aimed at evaluating Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA–2) and Normalized Difference Infrared Index (NDII) soil moisture proxies in calibrating a comprehensive Non-linear Aggregated Drought Index (NADI). Soil moisture plays a critical role in temperature variability and controlling the partitioning of water into evaporative fluxes as well as ensuring effective plant growth. Long-term variability and change in climatic variables such as precipitation, temperatures, and the possible acceleration of the water cycle increase the uncertainty in soil moisture variability. Streamflow, temperature, rainfall, reservoir storage, MERRA–2, and NDII soil moisture proxies’ data from 1986 to 2016 were used to formulate the NADI. The trend analysis was performed using the Mann Kendall, SQ-MK was used to determine the point of trend direction change while Theil-Sen trend estimator method was used to determine the magnitude of the detected trend. The seasonal correlation between the NADI-NDII and NADI-MERRA–2 was higher in spring and autumn with an R2 of 0.9 and 0.86, respectively. A positive trend was observed over the 30 years period of study, NADI-NDII trend magnitude was found to be 0.02 units per year while that of NADI-MERRA–2 was 0.01 units. Wavelet analysis showed an in-phase relationship with negligible lagging between the NDII and MERRA–2 calibrated NADI. Although a robust comparison is recommended between soil moisture proxies and observed soil moisture, the soil moisture proxies in this study were found to be useful in monitoring long-term changes in soil moisture.
Roman Water Transport: Pressure Lines
Authors: Kessener Paul M.
Published: December 2021

In Roman times long distance water transport was realized by means of aqueducts. Water was conveyed in mortared open channels with a downward slope from spring to destination. Also wooden channels and clay pipelines were applied. The Aqua Appia, the oldest aqueduct of Rome, was constructed in the third Century BCE. During the Pax Romana (second Century CE), a time of little political turmoil, prosperity greatly increased, almost every town acquiring one or more aqueducts to meet the rising demand from the growth of population, the increasing number of public and private bath buildings, and the higher luxury level in general. Until today over 1600 aqueducts have been described, Gallia (France) alone counting more than 300. Whenever a valley was judged to be too wide or too deep to be crossed by a bridge, pressure lines known as ‘inverted siphons’ or simply ‘siphons’ were employed. These closed conduits transported water across a valley according the principle of communicating vessels. About 80 classical siphons are presently known with one out of twenty aqueducts being equipped with a siphon. After an introductory note about aqueducts in general, this report treats the ancient pressure conduit systems with the technical problems encountered in design and function, the techniques that the ancient engineers applied to cope with these problems, and the texts of the Roman author Vitruvius on the subject. Reviewers noted that the report is rather long, and it is. Yet to understand the difficulties that the engineers of those days encountered in view of the materials available for their siphons (stone, ceramics, lead), many a hydraulic aspect will be discussed. Aspects that for the modern hydraulic engineer may be common knowledge and of minor importance when constructing pressure lines, in view of modern construction materials. It was different in Vitruvius’s days.
Biological Desulfurization of Tannery Effluent Using Hybrid Linear Flow Channel Reactors
Authors: Horn Emma Jane , Oyekola Oluwaseun O. , Welz Pamela Jean , van Hille Robert Paul
Published: December 2021

The tanning process generates a saline effluent with high residual organics, sulfate and sulfide concentrations. The transition from a linear to circular economy requires reimagining of waste streams as potential resources. The organics in tannery effluent have the potential to be converted to renewable energy in the form of biogas if inhibitors to anaerobic digestion are removed. Hybrid linear flow channel reactors inoculated with culture-enriched halophilic sulfate reducing bacteria from saline environments were evaluated as a novel pretreatment step prior to anaerobic digestion for the concurrent removal of sulfur species and resource recovery (elemental sulfur and biogas). During continuous operation of a 4-day hydraulic retention time, the reactors were capable of near-complete sulfide oxidation (>97%) and a sulfate reduction efficiency of 60–80% with the formation of a floating sulfur biofilm containing elemental sulfur. Batch anaerobic digestion tests showed no activity on untreated tannery effluent, while the pretreated effluent yielded 130 mL methane per gram COD consumed.
Aplicación de las destrezas con criterio de desempeño para el desarrollo de la comprensión lectora
Authors: Chávez Judith Mero
Published: December 2021

El siguiente trabajo tiene como propósito analizar las destrezas con criterio de desempeño para mejorar la lectura comprensiva en los estudiantes de sexto año de educación básica de la Unidad Educativa “Costa Azul” de la ciudad de Manta, Ecuador, en el periodo lectivo 2018-2019, con ello se permite establecer un énfasis de la educación como eje fundamental para el desempeño del educando a través de la lingüística. La comprensión lectora debe ser entendida como una práctica intrincada que demanda un aprendizaje y una enseñanza distintivos, tanto en el marco de los contenidos conceptuales como en el de los tipos textuales singulares de cada disciplina. Se parte del hecho de que no basta solamente con manejar un buen vocabulario para comprender un texto, sino que es necesario conocer las tipologías de los textos de especialidad. En este sentido, la lectura es un requerimiento indispensable para el aprendizaje, una herramienta de trascendental importancia para adquirir conocimiento, acceder a la cultura y participar en ella. De allí su importancia y el hecho de abordar este tema en el presente texto.
La formación del pensamiento crítico: habilidades básicas, características y modelos de aplicación en contextos innovadores.
Authors: Robles Pihuave Alfredo
Published: December 2021

El pensamiento crítico es una actividad reflexiva, porque analiza lo bien fundado de los resultados de su propia reflexión como los de la reflexión ajena. Además es la capacidad que tiene el ser humano de cuestionar su propio pensamiento y el de los demás. En este estudio se asume que se trata de un pensamiento totalmente orientado hacia la acción. Siempre hace su aparición en un contexto de resolución de problemas y en la interacción con otras personas, más en función de comprender la naturaleza de los problemas que en proponer soluciones. Por otra parte, la evaluación de la información y conocimientos previos fundamenta la toma de decisiones en distintos ámbitos del quehacer humano, teniendo en cuenta que nuestras conductas y acciones se basan en lo que creemos y en lo que decidimos hacer. Así que el pensamiento crítico debe ser fomentado y sus competencias deben ser enseñadas de modo explícito e intencional, identificándose cuáles son, cuándo cada una es más útil, y cómo pueden ser utilizadas. En este sentido, el propósito de este trabajo es identificar algunas de las definiciones más relevantes de este tipo de pensamiento, valorar la contribución de las diferentes estrategias metodológicas de enseñanza-aprendizaje y abordar algunos de los modelos de aplicación en aulas de clases. Con ello se pretende motivar la mejora del pensamiento crítico.
Fundamentos argumentativos y éticos en la escritura académica desde la perspectiva de la formación en posgrado
Authors: Torres Terán Olga Viviana
Published: December 2021

La producción de textos escritos es una de las tareas fundamentales en las instituciones académicas. Sirve para generar conocimiento, para la integración de los nuevos miembros académicos en las respectivas comunidades discursivas y para entender mejor los temas sobre los que se trabaja. Debido al efecto clarificador y organizador que tiene la escritura, conviene que la redacción sea parte del proceso de investigación. En este trabajo se abordan los fundamentos filosóficos y éticos de manera práctica y sencilla y los procesos de redacción previa a su publicación. La escritura académica tiene particularidades que no se encuentran en otros tipos de discursos. Este texto es, en todo caso, un aparato retórico que se elabora sobre la base de determinados procedimientos y estrategias discursivas, teniendo como eje la perspectiva de la formación académica para la producción científica. En este contexto, analizar los fundamentos en los que se han basado un grupo de docentes es esencial para determinar las formas en que la redacción de un artículo se constituye en un texto de divulgación académica que busca persuadir al lector sobre la legitimidad de un aporte a la disciplina científica en la que se inserta.
La planificación microcurricular: una herramienta para la innovación de las prácticas educativas.
Authors: Calderón Delgado Mariela
Published: December 2021

El proceso de elaboración microcurricular constituye todo un desafío, se trata de definir el desarrollo de un plan que involucre el objetivo de la clase, las actividades, estrategias metodológicas, recursos y evaluación basados en el contenido específico de una materia determinada. En este sentido, el texto que se presenta a continuación trata de determinar la importancia de la planificación microcurricular como herramienta para innovar las prácticas educativas. Además, profundiza su aplicación en los elementos de la planeación didáctica enmarcados en el ámbito de la innovación y para ello se ha tomado como referencia al grupo de profesores que labora en la Unidad Educativa Fiscal “Edwin Hernán Mendoza Bravo”, de la ciudad de Portoviejo, provincia de Manabí, Ecuador. La investigación que se llevó a cabo fue de tipo exploratoria, con un enfoque cualitativo y una metodología descriptiva apoyada en la revisión de fuentes bibliográficas de la literatura especializada. El instrumento que se utilizó fue la encuesta y sus resultados permitieron llegar a la conclusión de que la elaboración de la planificación microcurricular forma parte de la labor docente y que este además de tener el dominio en su asignatura debe contar con la creatividad necesaria para realizar este documento del curso, incluyendo estrategias de enseñanza innovadoras acordes a las necesidades de los alumnos, de los contenidos y de los recursos disponibles en el contexto.
La importancia de las actividades lúdicas y recreativas para fomentar la equidad de género.
Authors: Cedeño Barreto María Elisa
Published: December 2021

La equidad de género es un tema recurrente en contextos académicos. Cada día la sociedad actual exige, principalmente de las instituciones educativas, que se sustente este tipo de principios para la prevención de la violencia. La realidad es que la enseñanza de la equidad de género no es sencilla cuando un niño o adolescente le toca padecer cotidianamente todo tipo de situaciones en sus propios círculos familiares. Frente a esta situación compleja surge la necesidad imperiosa de buscar nuevas formas de enseñar la equidad de género y una de ellas se basa en el desarrollo de juegos recreativos y la realización de talleres lúdicos. En este marco, el presente estudio pretende indagar en las particularidades y factores que pueden propender a fomentar la equidad en estudiantes de educación básica partiendo desde los aspectos señalados. El juego tiene un poderoso componente que permite generar espacios de reflexión para identificar aquellas prácticas positivas y negativas de cara a la equidad que se busca. La perspectiva de género busca por encima de la igualdad el respeto para lograr un nivel de convivencia armónico. Este trabajo analiza algunas de estas particularidades y matices en profesores de educación básica y brinda algunas estrategias metodológicas, lúdicas sobre todo, que permitan generar un nivel de conciencia equitativa hacia todas las personas, independientemente de su identidad sexual. Por ello la mirada de esta investigación busca establecer la importancia e influencia que tienen las actividades recreativas en la temática abordada.
Habilidades de las TIC que requieren los docentes en e bachillerato
Authors: Sornoza Menéndez Carlos Eduardo
Published: December 2021

Cada vez, y con mayor asiduidad, las nuevas Tecnologías de la Información y la Comunicación (TIC) constituyen un reto en los procesos académicos. Los formadores requieren, para ello, adquirir una serie de competencias que contribuyan en la construcción de un conocimiento acorde a lo que las instituciones educativas y, sobre todo, la sociedad exigen. Hay un vacío académico del cual muchos docentes no son conscientes. Lo cierto es que los profesores que no se encuentran preparados para afrontar estos nuevos retos reprueban en el empleo de procedimientos innovadores. El estudio que se presenta a continuación indaga en los requerimientos y competencias que la educación actual exige de los maestros. Se trata de una mirada optimista, de una perspectiva que pretende indagar en la forma en que las nuevas tecnologías de la información y la comunicación han modificado las prácticas en los ámbitos académicos contemporáneos. No se trata de un proceso sencillo ni tampoco este documento pretende brindar un abordaje exhaustivo, pero sí particular sobre una realidad que involucra y renueva buena parte de la actividad educativa actual.
Leísmo y uso del plural expresivo en las estrategias conversacionales empleadas en Mercado Libre Venezuela
Authors: Henríquez Coronel María Angélica , Vielma Orellana Yonarlli José , Cordero Zulena , Navarrete Pita Yulexy , Castillo Quintero Humberto
Published: December 2021

La cortesía es un conjunto de estrategias que se usa en la conversación entre dos o más personas para establecer formalismos que eviten o, al menos disminuyan, los apremios que el hablante debe enfrentar al momento de comunicarse. Las variadas formas lingüísticas que se usan con este fin se constituyen en fórmulas consensuadas de cortesía. En este trabajo, se analizaron las formas lingüísticas de cortesía empleadas por el binomio vendedor-comprador, una vez concretada una venta en la plataforma de compras por Internet Mercado Libre Venezuela. La fundamentación teórica se apoya en la teoría de cortesía (Scandelle, 1996), Ciberlingua (Fraca, 2006), leísmo (Lapesa, 1993), interpretación del leísmo (García, 1975), reanálisis cuantificador plural y cuantificador intensivo. La investigación se ha realizado bajo un enfoque cualitativo, y se usa la netnografía como diseño de investigación. La muestra fue tomada de conversaciones del chat de Mercado Libre Venezuela entre mayo-junio 2018 y para su análisis se diseñaron matrices estructuradas fundamentadas en las teorías señaladas en las que se identificaron y distinguieron los aspectos lingüísticos objeto de estudio. Se concluyó que el leísmo de cortesía es empleado como forma lingüística de tratamiento y de interacción en la que la selección del pronombre clítico le en función acusativa apareció predominantemente con los verbos, esperar, llamar, dar y mandar. También hubo presencia relevante de fórmulas nominales ritualizadas de cortesía en singular y plural.
Procedimientos formativos innovadores para la promoción del aprendizaje colaborativo en la aplicación de mensajería instántea WhatsApp.
Authors: Paredes Palacios Betty
Published: December 2021

El presente artículo tiene como objetivo analizar las estrategias didácticas basadas en WhatsApp como  herramienta para promover el aprendizaje colaborativo en los procesos educativos en la Unidad Educativa 5 de Junio de la ciudad de Manta, Manabí, Ecuador. Desde un marco conceptual y teórico, como la tendencia que propicia el nuevo paradigma educativo: el aprendizaje móvil. Se realizó una investigación en la que se empleó el método descriptivo, combinada con una revisión documental. La recolección de datos se realizó a través de una encuesta a estudiantes. El estudio empírico evidencia que la red social WhatsApp es una herramienta utilizada por los alumnos,  en unos cuantos  casos, para las actividades educativas del hogar y en  otros,  para las relaciones familiares; sin embargo se demuestra  que los investigados le dan un escaso valor educativo a la  herramienta, puesto que la consideran  sólo como un medio  que genera distracción en los estudiantes; también se   revela  que  hay situaciones adversas para una óptima utilización de esta herramienta tecnológica y radica en los problemas de comunicación entre los estudiantes para organizarse, y debilidades en el ejercicio del liderazgo, mas, un aspecto positivo a considerar es que la conectividad no es el mayor  obstáculo a la hora de utilizar esta herramienta.
Las ventajas de la utilización de dispositivos móviles en el proceso de aprendizaje en la educación básica.
Authors: Zamora Delgado Ronald Iván
Published: December 2021

El avance de la tecnología móvil ha generado en la actualidad una mejora en la educación para apoyar a los docentes y mejorar sus prácticas de enseñanza tanto dentro como fuera del aula de clases. El empleo de los dispositivos móviles permite reforzar el proceso de enseñanza y aprendizaje sin importar las limitaciones del tiempo y espacio. Por ello, a lo largo de este trabajo se hará hincapié en las concepciones y estrategias metodológicas que pueden aplicarse a partir del aprendizaje móvil, llamado también M-Learning, para fortalecer el aprendizaje habitual y mejorar al trabajo educativo del profesor, de tal forma que se permita promover un aprendizaje autónomo en relación con el avance de las nuevas tecnologías de la información y la comunicación. Se parte del hecho de que se encuentran disponibles una diversidad de aplicaciones y estrategias para usar en dispositivos móviles que propicien un mejor manejo de los recursos tecnológicos disponibles. En este sentido, el docente debe considerar la metodología y actividades que pretende ejecutar con el empleo de las prácticas del M-Learning y configurar una temática en particular de una disciplina con la auténtica esencia de lo que significa el aprendizaje móvil en los estudiantes, de lo contrario no se alcanzarán esperados. Es decir que, como en toda actividad educativa, la planificación resulta fundamental. Finalmente, es preciso considerar que otro de los propósitos de este trabajo es disminuir el desconocimiento que tanto los maestros como los estudiantes tienen acerca de las ventajas y beneficios que ofrece el M-Learning y de cómo la aplicación de sus procedimientos puede convertirse en una provechosa herramienta innovadora para obtener resultados satisfactorios en el proceso educativo contemporáneo.
TIC y neuroeducación como recurso de innovación en el proceso de enseñanza y aprendizaje
Authors: Meza Mendoza Luis Raúl , Moya Martínez María Elena
Published: December 2021

Este artículo aborda la influencia que produce la interacción entre la tecnología de la información y comunicación (TIC) y la Neuroeducación, en el proceso de enseñanza-aprendizaje, como recurso de innovación educativa. Además, la necesidad de reflexionar sobre las relaciones que existe entre la tecnología, aprendizaje y Neuroeducación, como un nuevo campo de desarrollo pedagógico dentro de los planteles educativos, que permitan a los estudiantes junto al docente obtener información de calidad y que posibilite el aprovechamiento práctico del conocimiento científico, para crear aprendizajes significativos. El objetivo de fomentar una nueva cultura de aprendizaje basado en el uso y aplicación de herramientas tecnológicas como también en el estudio del cerebro y su funcionamiento, como órgano principal del cuerpo humano y transformador del conocimiento. Para ello es necesario contar con la neurotecnología educativa como disciplina que permite la conexión y comunicación directa con el sistema nervioso. Los elementos en que se fundamentan la Neuroeducación o Neurociencia son las tecnologías educativas. La metodología aplicada en esta investigación se sustentó en el método inductivo por permitir realizar un análisis del aprendizaje que va de lo particular a lo general, del mismo modo la aplicación del método analítico-sintético para determinar las causas-efectos que posteriormente determinará una síntesis general. El trabajo de investigación muestra los recursos tecnológicos y neuroeducativos como herramientas y disciplinas, que ayudan a establecer estrategias didácticas en la adquisición de conocimientos y simultáneamente contribuir con el desarrollo de nuevos paradigmas educativos que están cambiando y alejándose de las metodologías tradicionales y mejorando la educación.
Compromiso y desvinculación académica. Consideraciones teóricas mixtas y decisiones metodológicas.
Authors: Rigo Daiana Yamila
Published: December 2021

El presente trabajo expone una reflexión sobre el compromiso académico desde la hibridación de la Psicología Educacional y la Sociología, entendiendo que las Ciencias Sociales tienen la ineludible tarea de posicionar sus estudios sobre educación en la intersección tradición-modernidad, a partir de la construcción de saberes innovadores para dar respuesta a problemáticas como la desvinculación, la falta de interés y participación en las aulas universitarias. Asimismo, el compromiso como meta-constructo complejo y maleable, conlleva un abordaje metodológico mixto que contemple diseños de investigación en contextos reales, diversas técnicas y fuentes de información para estudiar su despliegue en las aulas universitarias, es decir diseños, técnicas y fuentes que responden a actores y contextos diversos que tejen un entramado de múltiples sentidos atravesado por diversos saberes, disciplinas y estrategias de recolección de datos. En este escenario, se pretende realizar una revisión de los principales aportes de la Psicología Educacional y la Sociología para estudiar el compromiso de estudiantes desde una posición situada en el aula de educación superior, atendiendo a los nuevos lineamientos metodológicos dentro de los estudios de diseño, las metodologías mixtas y los análisis multivariados, que permitan captar la complejidad inherente del tema que ocupa.
Трематоды (Trematoda, Plathelminthes) азиатского бурундука (Tamias sibiricus) Магаданской области.
Authors:   Institute of Biological Problems of the North, FEB RAS, Magadan, Orlovskaya O. M. , Dokuchaev N. Е. ,   Institute of Biological Problems of the North, FEB RAS, Magadan
Published: December 2021

Data on trematodes (Trematoda) of the Siberian Cipmunk (Tamias sibiricus) in Magadan Oblast are presented. Four trematode species of the two families (Plagiorchiidae Lühe, 1901 (Plagiorchis vespertilionis (Müller, 1780); Pl. elegans (Rudolphi, 1802), Pl. eutamiatis (Schulz, 1932), and Brachylaimidae Goyeux et Folay, 1930 (Brachylaima recurva (Dujardin, 1845)) are identified. An illustrated description of all the four species of trematodes, first noted in the Chipmunk in the North-East of Russia, is given.
О находке деревьев Chosenia arbutifolia (Pall.) A. Skvorts. и Betula platyphylla Sukacz. в Раучуа-Чаунской тундре (Западная Чукотка).
Authors:   North-East Interdisciplinary Scientific Research Institute n. a. N. A. Shilo, FEB RAS, Magadan, Petrov D. V. ,   Federal Research Centre "Fundamentals of Biotechnology" of the RAS, Moscow, Solovyeva D. V. ,   Institute of Biological Problems of the North, FEB RAS, Magadan, Vartanyan S. L. ,   North-East Interdisciplinary Scientific Research Institute n. a. N. A. Shilo, FEB RAS, Magadan, Sinelnikova N. V. ,   Institute of Biological Problems of the North, FEB RAS, Magadan
Published: December 2021

The article presents the finding of the northernmost localities of Betula platyphylla Sukacz. and Chosenia arbutifolia (Pall.) A. Skvorts. in Chukotka (Russia's North-East).
Пространственное распределение птиц Алданского нагорья.
Authors:   Institute for Biological Problems of Cryolithozone SB RAS, Yakutsk, Shemyakin E. V. , Vartapetov L. G. ,   Institute of Systematics and Ecology of Animals SB RAS, Novosibirsk, Larionov A. G. ,   Institute for Biological Problems of Cryolithozone SB RAS, Yakutsk,   Institute for Biological Problems of Cryolithozone SB RAS, Yakutsk
Published: December 2021

The results of bird route censuses, conducted on the territory of the Aldan Highland in the first half of summer and generally covering the period from 2000 to 2019, were analyzed. The total length of the routes was about 2815 km. A total of 116 initial variants of the bird population were used. Based on the results of multivariate factor analysis for 160 species registered in these censuses, a hierarchical classification of their preference for habitats was drawn up. The classification showed that 45 % of birds prefer forests, woodlands and burned areas, 26.2 % - water bodies and their banks, 13.8 % - bogs and meadows, 9.4 % - villages and cities, 5.6 % - mountain tundra. A comparative analysis with a similar classification for the Altai Highland has been performed. The main differences in the territorial distribution of bird species in the Aldan Highland and Altai lie in a smaller number of identified types of preferences in our region. Due to the homogeneity of forest biotopes and the absence of the steppe, forest-steppe, subnival, and nival zones in the Aldan Highland, the corresponding landscapes are not represented here, which determines the absence of the steppe, forest-meadow-steppe, meadow-bog, and subnival types. Similarly to Altai, the forest, tundra and synanthropic types of preference are distinguished in the Aldan Highland.
Пространственно-типологическая структура и организация населения птиц Тоболо-Иртышской лесостепи и степи Западной Сибири и Северного Казахстана во второй половине лета.
Authors:   Institute of Systematics and Ecology of Animals, SB RAS, Novosibirsk, Soloviev S. A. , Vartapetov L. G. ,   Institute of Systematics and Ecology of Animals, SB RAS, Novosibirsk
Published: December 2021

According to the results of bird counts carried out in 138 habitats over 12 years, a hierarchical classification and a structural graph of the similarity of ornithocomplexes in the plain southwestern part of Western Siberia and Northern Kazakhstan have been compiled in the period from 1982 till 2002. The hierarchical classification contains six types of bird populations. The similarity graph is built at the level of types and is represented by three rows (trends). One row consists of bird complexes of residential and recreational areas; the second, of wetlands; and the third, of forest, forest-field, and steppe habitats. The classification taxa characteristics contain information on the three most numerous bird species (leaders in abundance), their share in the community, population density, and the background species wealth. Based on the assessment of the similarity coincidence degree for the of bird communities and environmental factors, a hierarchy of the impact of the main anthropogenic and natural factors, determining the bird population formation, has been established.
HEMŞİRELİK ÖĞRENCİLERİNİN EĞİTSEL AMAÇLI SOSYAL AĞ KULLANMA ÖZ-YETERLİK ALGILARININ DEĞERLENDİRİLMESİ
Authors: ÇELİK Sevim , KARAHAN Elif , YILDIRIM TANK Dilek
Published: December 2021

Bu araştırmanın amacı, hemşirelik öğrencilerinin eğitsel amaçlı sosyal ağ kullanma öz-yeterlik algı düzeylerini belirlemektir. Bu kesitsel tipte tanımlayıcı araştırma, 2017-2018 eğitim öğretim yılı bahar yarıyılında bir üniversitenin sağlık bilimleri fakültesi hemşirelik bölümünde öğrenim gören 766 öğrenci ile yapıldı. Veriler, öğrencilerin tanıtıcı özelliklerine ilişkin sorulardan oluşan anket formu ve Eğitsel Sosyal Ağ Kullanım Öz-yeterlik Ölçeği kullanılarak toplandı. Öğrencilerin %31.1’inin sosyal ağlarda 1-2 saat ve % 30.4’ünün 3-4 saat zaman geçirdikleri saptandı. En sık kullanılan sosyal ağların sırasıyla Instagram (%63.6), YouTube (%15.0) ve Twitter (%6.8) olduğu belirlendi. Öğrencilerin cinsiyeti, mezun oldukları lise türü, kullandıkları sosyal ağlar ile eğitsel amaçlı sosyal ağ kullanım öz-yeterlik algı düzeyleri arasında ilişki bulunmadı (p>0.05). Doğu Anadolu Bölgesi’ndeki liseden mezun olan öğrencilerin eğitsel amaçlı sosyal ağ kullanım öz-yeterlik algı düzeylerinin
anlamlı şekilde düşük olduğu belirlendi (p=0.027). İkinci sınıfta öğrenim gören (p=0.001), sosyal ağlarda 6 saat ve üzeri vakit geçiren, sosyal ağları eğlence ve iletişim amaçlı kullanan öğrencilerin eğitsel amaçlı sosyal ağ kullanım öz-yeterlik algı düzeylerinin yüksek olduğu saptandı (p<0.001). Öğrencilerin % 52.3’ünün eğitsel amaçlı sosyal ağ kullanım öz-yeterlik algı
düzeylerinin yüksek, % 46.6’sının orta düzeyde olduğu belirlendi. Öğrencilerin eğitsel amaçlı sosyal ağ kullanım öz-yeterlik algı düzeylerini artırmak için sınıf içi ve dışı etkinliklerde eğitimcilerin sosyal ağ kullanımını sağlamaları önerilebilir
Formation of the forecast model of delayed lung changes by dynamic CT images in COVID-19
Authors:   Siberian Federal University, Kents А.S. , Hamad Y.A. , Simonov K.V.
Published: December 2021

In the diagnostic practice of radiology, doctors visually evaluate medical images to identify characteristics and monitor disease. AI and computer vision techniques can recognize complex patterns in imaging data and provide quantitative estimates of radiographic characteristics. Based on the methodology developed by the authors, results were obtained on the interpretation and search for information. This contributes to the rapid processing of the data array and the formation of programs to support decision-making by the radiologist. The applied computational technique is aimed not only at improving the image quality, but also at the ability to search for the CT pattern of more delayed changes. Quantitative analysis of medical imaging data using modern software provides more information than standard X-ray analysis by a radiologist. Research idea: isolation and formation of markers in the area of interest in the structure of the lungs to assess individual characteristics. This provides a more reliable interpretation of the identified changes, with an increase in the accuracy of the diagnosis of respiratory diseases. An increase in accuracy is necessary to identify pathological structures, accelerate the process of diagnosing respiratory diseases, and reduce the proportion of repeated examinations. The following results were obtained: a method was developed for the analysis and interpretation of pathological changes in the lungs to improve the quality and accuracy of X-ray diagnostics; a search for reference images was performed to form a prediction of delayed events and compare the results in a group of patients; a comparative analysis of the data obtained using the computational technique has been carried out. The study was carried out within the framework of the grant «Methods of artificial intelligence and computer vision to improve the accuracy of remote diagnostics of respiratory diseases in the northern group of regions of the Krasnoyarsk Territory» with financial support from the Krasnoyarsk Regional Fund for the Support of Scientific and Scientific and Technical Activities.
Approbation of the shearlet transformation method for visualization of pathological changes in the lungs on CT images for diagnosing COVID-19
Authors:   Siberian Federal University, Kents А.S. , Hamad Y.A. , Simonov K.V.
Published: December 2021

Radiation diagnostics is a rapidly developing field of medicine which actively includes such concepts as artificial intelligence, computer vision and new methods of medical imaging. Given the urgency of the problem of the appearance of Covid-19 a methodology for processing, analyzing and interpreting CT images is proposed for the effective detection, texture analysis and visualization of pathological changes in the lungs with Covid-19. In the format of advances in AI and computer vision in diagnostics, combined in a new direction – radiomics which is based on the selection of a set of quantitative parameters of the pathology under study with the most accurate values of indicators (markers). Depending on the purpose of the medical research, the extracted features (markers) will differ. An analysis of textural features was carried out based on spectral decomposition methods (wavelet and shеarlet transform of images) with their contrasting with color coding. This approach makes it possible to more accurately assess the quantitative characteristics of the identified changes. As a result of experimental studies a presentation was formed for a medical specialist, followed by a final X-ray diagnostic conclusion. The study was carried out within the framework of the grant «Methods of artificial intelligence and computer vision to improve the accuracy of remote diagnostics of respiratory diseases in the northern group of regions of the Krasnoyarsk Territory» with financial support from the Krasnoyarsk Regional Fund for the Support of Scientific and Scientific and Technical Activities.
Bacteria and viruses in the objective of probe microscopy
Authors:   Lomonosov Moscow State University, Yaminsky I.V.
Published: December 2021

The article is devoted to the study of viruses and bacteria using a scanning probe microscope in the atomic force microscopy mode, in particular, to the question, what data can be obtained using this method and how to interpret it.