bluuebunny/crossref_metadata_2025 huggingface dataset:
Two-dimensional MoS22H, 1T, and 1T′crystalline phases with incorporated adatoms: theoretical investigation of electronic and optical properties
Authors: Mehmood Faisal , Pachter Ruth , Back Tyson C. , Boeckl John J. , Busch Robert T. , Stevenson Peter R.
Published: July 2021

Although there has been progress in studying the electronic and optical properties of monolayer and near-monolayer (two-dimensional, 2D)MoS2upon adatom adsorption and intercalation, understanding the underlying atomic-level behavior is lacking, particularly as related to the optical response. Alkali atom intercalation in 2D transition metal dichalcogenides (TMDs) is relevant to chemical exfoliation methods that are expected to enable large scale production. In this work, focusing on prototypical 2DMoS2, the adsorption and intercalation of Li, Na, K, and Ca adatoms were investigated for the 2H, 1T, and 1T′phases of the TMD by the first principles density functional theory in comparison to experimental characterization of 2H and 1T 2DMoS2films. Our electronic structure calculations demonstrate significant charge transfer, influencing work function reductions of 1–1.5 eV. Furthermore, electrical conductivity calculations confirm the semiconducting versus metallic behavior. Calculations of the optical spectra, including excitonic effects using a many-body theoretical approach, indicate enhancement of the optical transmission upon phase change. Encouragingly, this is corroborated, in part, by the experimental measurements for the 2H and 1T phases having semiconducting and metallic behavior, respectively, thus motivating further experimental exploration. Overall, our calculations emphasize the potential impact of synthesis-relevant adatom incorporation in 2DMoS2on the electronic and optical responses that comprise important considerations toward the development of devices such as photodetectors or the miniaturization of electroabsorption modulator components.
Asymmetric self-coherent detection
Authors: Li Xueyang , O’Sullivan Maurice , Xing Zhenping , Alam Md Samiul , Mousa-Pasandi Mohammad E. , Plant David V.
Published: July 2021

The bandwidth upgrade required in short-reach optical communications has prompted the need for detection schemes that combine field reconstruction with a cost-effective subsystem architecture. Here we propose an asymmetric self-coherent detection (ASCD) scheme for the field reconstruction of self-coherent (SC) complex double-sideband (DSB) signals based on a direct-detection (DD) receiver with two reception paths. Each reception path consists of a photodiode (PD) and an analog-to-digital converter for the detection of a part of the received optical signal that experiences a different optical transfer function via the configuration of an optical filter. We derive an analytical solution to reconstructing the signal field and show the optimal filter response in optimizing the signal SNR. Further, we numerically characterize the theoretical performance of a specific ASCD scheme based on a chromatic dispersion filter and validate the principle of the ASCD scheme in a proof-of-concept experiment. The ASCD scheme approaches the electrical spectral efficiency of coherent detection with a cost-effective DD receiver, which shows the potential for high-speed short-reach links required by edge cloud communications and mobile X-haul systems.
All-optical tunable high-order Gaussian beam splitter based on a periodic dielectric atomic structure
Authors: Zhang Hengfei , Yuan Jinpeng , Dong Shichao , Wu Chaohua , Wang Lirong , Xiao Liantuan , Jia Suotang
Published: July 2021

Beam splitting of high-order Gaussian (HOG) beams increases the channel capacity and improves the processing speed of the incoming information. Here a novel all-optical tunable multi-port HOG beam splitter under a periodic dielectric atomic structure is proposed and demonstrated. The original HOG beam is replicated in the output beams. A distinguishable five-port output beam is observed in the experiment, which is beneficial for high-speed optical communications. By tuning the optical properties of this periodic dielectric structure, the spatial position and intensity distribution of each output port are precisely controllable. The splitting ratio δ can be finely adjusted in the range 0 – 4.8. This work provides a new approach for multi-port HOG beam splitters and the basis for all-optical communication.
Three-electron correlations in strong laser field ionization
Authors: Efimov Dmitry K. , Maksymov Artur , Ciappina Marcelo , Prauzner-Bechcicki Jakub S. , Lewenstein Maciej , Zakrzewski Jakub
Published: July 2021

Strong field processes involving several active electrons reveal unambiguous dynamical signatures of the Pauli principle importance even in the nonrelativistic regime. We exemplify this statement studying three active electrons model atoms interacting with strong pulsed radiation, using an ab-initio time-dependent Schrödinger equation on a grid. In our restricted dimensionality model we are able to analyze momenta correlations of the three outgoing electrons using Dalitz plots. The different symmetries of the electronic wavefunctions, directly related to the initial state spin components, appear clearly visible.
Tunable optical vortex array in a two-dimensional electromagnetically induced atomic lattice
Authors: Yuan Jinpeng , Zhang Hengfei , Wu Chaohua , Wang Lirong , Xiao Liantuan , Jia Suotang
Published: July 2021

Optical vortex arrays (OVAs) containing multiple vortices have been in demand for multi-channel optical communications and multiple-particle trapping. In this Letter, an OVA with tunable intensity and spatial distribution was implemented all-optically in a two-dimensional (2D) electromagnetically induced atomic lattice (EIL). Such a square lattice is constructed by two orthogonal standing-wave fields in

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vapor, resulting in the periodically modulated susceptibility of the probe beam based on electromagnetically induced transparency (EIT). An OVA with dark-hollow intensity distribution based on 2D EIL was observed in the experiment first. This work thus studied the nonlinear 2D EIL process both theoretically and experimentally, presenting, to the best of our knowledge, a novel method of dynamically obtaining and controlling an OVA and further promoting the construction of all-optical networks with atomic ensembles.
Compact broadband silicon-integrated Airy beam emitter
Authors: Hao Weiming , Wang Jian , Chen Lin
Published: July 2021

Optical Airy beams have wide-ranging applications in photonics, but conventional approaches for generating Airy beams require bulky and strictly aligned optical systems. Here, we propose on-chip compact Airy beam emitters by using a shallow-etched holography grating on a silicon platform. The holography grating, formed by the binary interferogram of the guided wave and the spatial Airy beam, can scatter the guided waves into spatial waves with the phase distributions being consistent with those of Airy beam. The simulation demonstrates that a

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holography grating on a strip waveguide enables the realization of 2D Airy beam within the wavelength range from 1490 to 1570 nm. Our results suggest a promising avenue towards potential applications in on-chip imaging, optical forces, optical interconnection, etc.
Dynamic resonant waveguide crossed gratings for wavelength-selective polarization conversion and optical modulation
Authors: Mazloumi Mahyar , Rochon Paul , Georges Sabat Ribal
Published: July 2021

Two-dimensional Resonant Waveguide Crossed Gratings (RWCG) were fabricated on azobenzene molecular glass thin films and their resonance behavior was studied once placed in between orthogonally aligned polarizers. Normally-incident polychromatic light was transmitted and/or reflected from these RWCGs only in narrow positive peaks. In addition, the central wavelength and transmitted intensity of these positive peaks were actively modulated by an external light source. Furthermore, a dynamic volume birefringence behavior related to the photomechanical effect of the azobenzene chromophores was observed. A mechanism to explain the polarization conversion of the resonant light using RWCGs at normal incidence was also proposed.
Hamming-shifting graph of genomic short reads: Efficient construction and its application for compression
Authors: Liu Yuansheng , Li Jinyan
Published: July 2021

Graphs such as de Bruijn graphs and OLC (overlap-layout-consensus) graphs have been widely adopted for the de novo assembly of genomic short reads. This work studies another important problem in the field: how graphs can be used for high-performance compression of the large-scale sequencing data. We present a novel graph definition named Hamming-Shifting graph to address this problem. The definition originates from the technological characteristics of next-generation sequencing machines, aiming to link all pairs of distinct reads that have a small Hamming distance or a small shifting offset or both. We compute multiple lexicographically minimal k-mers to index the reads for an efficient search of the weight-lightest edges, and we prove a very high probability of successfully detecting these edges. The resulted graph creates a full mutual reference of the reads to cascade a code-minimized transfer of every child-read for an optimal compression. We conducted compression experiments on the minimum spanning forest of this extremely sparse graph, and achieved a 10 − 30% more file size reduction compared to the best compression results using existing algorithms. As future work, the separation and connectivity degrees of these giant graphs can be used as economical measurements or protocols for quick quality assessment of wet-lab machines, for sufficiency control of genomic library preparation, and for accurate de novo genome assembly.
Self-organized division of cognitive labor
Authors: Andrade-Lotero Edgar , Goldstone Robert L.
Published: July 2021

Often members of a group benefit from dividing the group’s task into separate components, where each member specializes their role so as to accomplish only one of the components. While this division of labor phenomenon has been observed with respect to both manual and cognitive labor, there is no clear understanding of the cognitive mechanisms allowing for its emergence, especially when there are multiple divisions possible and communication is limited. Indeed, maximization of expected utility often does not differentiate between alternative ways in which individuals could divide labor. We developed an iterative two-person game in which there are multiple ways of dividing labor, but in which it is not possible to explicitly negotiate a division. We implemented the game both as a human experimental task and as a computational model. Our results show that the majority of human dyads can finish the game with an efficient division of labor. Moreover, we fitted our computational model to the behavioral data, which allowed us to explain how the perceived similarity between a player’s actions and the task’s focal points guided the players’ choices from one round to the other, thus bridging the group dynamics and its underlying cognitive process. Potential applications of this model outside cognitive science include the improvement of cooperation in human groups, multi-agent systems, as well as human-robot collaboration.
Candida albicans exhibit two classes of cell surface binding sites for serum albumin defined by their affinity, abundance and prospective role in interkingdom signalling
Authors: Teevan-Hanman Claire , O’Shea Paul
Published: July 2021

Serum albumin binding to the yeast form of Candida albicans is described. Two populations of binding site are identified using two complementary spectroscopic techniques: an extrinsic fluorescent probe, 3-hexa-decanoyl-7-hydrocoumarin ([HEXCO) added to the C. albicans yeast cell surface that records the electrostatic surface potential and so responds to the surface binding of serum albumin and secondly a light scattering technique that reveals how albumin modulates aggregation of the yeast population. The albumin binding sites are found to possess different binding affinities and relative abundance leading to different total binding capacities. These are characterized as a receptor population with high affinity binding (Kd ~ 17 μM) but relatively low abundance and a separate population with high abundance but much lower affinity (Kd ~ 364 μM). The low-affinity binding sites are shown to be associated with the yeast cell aggregation. These values are found be dependent on the C. albicans strain and the nature of the culture media; some examples of these effects are explored. The possible physiological consequences of the presence of these sites are speculated in terms of evading the host’s immune response, biofilm formation and possible interkingdom signaling processes.
Treatment response in dogs with naturally occurring grade 3 elbow osteoarthritis following intra-articular injection of 117mSn (tin) colloid
Authors: Donecker John , Fabiani Michelle , Gaschen Lorrie , Aulakh Karanvir Singh
Published: July 2021

The radionuclide 117mSn (tin-117m) embedded in a homogeneous colloid is a novel radiosynoviorthesis (RSO) device for intra-articular (IA) administration to treat synovial inflammation and mitigate osteoarthritis (OA) in dogs. A study to evaluate tin-117m colloid treatment response in dogs with OA was conducted at two centers, the School of Veterinary Medicine at Louisiana State University, and at a referral practice in Houston, Texas. The tin-117m colloid was administered per-protocol to 14 client-owned dogs with radiographically confirmed, grade 3 OA in one or both elbow joints. Dog owners and attending clinicians assessed the level of pain at baseline (BL) and the post-treatment pain response at 90-day intervals for one year. Owners assessed treatment response according to a pain severity score (PSS) and a pain interference score (PIS) as defined by the Canine Brief Pain Inventory. Clinicians reported a lameness score using a 0–5 scale, from no lameness to continuous non-weight bearing lameness, when observing dogs at a walk and a trot. The rate of treatment success as determined by improved mean PSS and PIS scores reported by dog owners was >70% at all time points. Clinicians reported an improved mean pain score from BL at post-treatment Days 90 (p<0.05), 180, and 270. The dog owner and clinician assessments of treatment success were significantly correlated (p>0.05) at Day 90 and Day 180 time points. Results indicated that a single IA dose of tin-117m colloid provided a significant reduction in pain and lameness and improved functionality for up to a full year, with no adverse treatment related effects, in a high percentage of dogs with advanced, clinical OA of the elbow joint.
Evaluation of economic burden with biologic treatments in Crohn’s disease patients: A mirror image study using an insurance database in Japan
Authors: Miyazaki Celine , Katsumasa Nagano , Huang Kuan Chih , Liu Yan Fang
Published: July 2021

Biologics are recommended in Japan to treat moderate to severe Crohn’s Disease (CD). Although CD is associated with high direct costs in Japan, updated information after ustekinumab’s approval is unavailable. We aimed to evaluate the healthcare resource utilization (HRU) and associated direct costs from the payer’s perspective in Japan. Claims data (2010–2018) were retrospectively analyzed to identify patients with CD. HRU and associated costs were evaluated for 12 months before and after biologic initiation and followed-up till 36 months post-initiation. Outcomes were reported using descriptive statistics. Among the included patients (n = 3,496), 1,783 were on biologics and 1,713 were on non-biologics. Mean (SD) age was 36.4 (13.2) years and patients were predominantly male (76.1%). Patients aged 18–39 years were affected with CD the most (55.3%). Biologic initiation was associated with a reduction in inpatient stay, length of stay, outpatient visits, and associated costs; and an increase in pharmacy costs and total costs after 12 months. Extended follow-up showed a decreasing trend in HRU and costs till 24 months but an increase after 36 months. These findings demonstrated reduction in clinical burden and slight increase in economic burden with biologics. However, indirect costs also need to be evaluated.
Cluster Based Real Time Scheduling for Distributed System
Authors: Talmale Girish , Shrawankar Urmila
Published: July 2021

Real time tasks scheduling on a distributed system is a complex problem. The existing real time tasks scheduling techniques are primarily based on partitioned and global scheduling. In partitioned based scheduling the tasks are assigned on a dedicated processor. The advantages of partitioned based approach is existing uni-processor scheduling techniques can be used; no migration overheads but task assignment is NP hard problem and optimal utilization of processing nodes is not possible. In global scheduling all tasks are maintained in a single tasks queue and allocated to multiple processing nodes. The advantage of global scheduling is optimal utilization of processing nodes but suffer from high migration and preemption overheads. This paper proposed cluster based real time tasks scheduling on a distributed system which is a hybrid scheduling approach where processing nodes group into cluster and scheduling using global scheduling. The simulation result shows that the proposed scheduling increases the tasks acceptance ratio, resource utilization as compared to partitioned and global scheduling and reduces migration as well as preemption overheads.
Analysis Performance Of Conventional Algorithm And HMS Algorithm For Four-Way Intersection With Modified Round Robin
Authors: Istiono Wirawan
Published: July 2021

Traffic jam is currently one of the main problems for densely populated cities like Jakarta, Indonesia. One problem that causes traffic jams in Jakarta is that the traffic lights are too fast, which causes many cars to not be able to pass the traffic lights. There are already many algorithms to overcome this problem and get the right time for traffic lights based on how many vehicles are waiting in line, such as the HMS Algorithm and Conventional Algorithm. This research objective is to compare which algorithm has better performance to find the right amount of time for traffic lights to reduce traffic jams at four-way intersections with modified Round Robin method. And the result shown that the HMS algorithm is very suitable to be used in any condition for large or little vehicles, while conventional algorithms are only suitable to use for vehicles in the one little lane or the vehicles in one lane with other lane direction in the same place of lane
A Review on Blockchain’s Applications and Implementations
Authors: Ahmad Pervez
Published: July 2021

Blockchain Technology (BCT) is one of many other emerging technologies that were introduced in the past several years & carried loads of potential utilizing technological development. This paper describes in detail the progress made in Blockchain Technology. Keeping this in mind, some fields have been determined in which their efficiency and modernization can be promoted by using Blockchain Technology. It also describes the problems and challenges faced in implementing Blockchain Technology. Researchers are performing studies vigorously to discover all the possible proficiencies of Blockchain Technology with some of them having faith in the Blockchain being vital for a de-centralized civilization. This paper provides an overview of Blockchain’s applications.
Adopción de las tecnologías infocomunicacionales (TI) en docentes: actualizando enfoques
Authors: Reyes González David S. M. , Guevara Cruz Horacio
Published: July 2021

El éxito/fracaso de una innovación educativa depende en gran parte de la forma en que los actores educativos interpretan, redefinen, filtran y dan forma al cambio propuesto. La expansión de la educación hacia nuevos formatos virtuales supone que las concepciones pedagógicas se hallen desfasadas, generando un desequilibrio entre el conocimiento informático y el uso pedagógico de las TI. Este trabajo realiza una revisión teórica de los diferentes modelos que abordan el proceso de adopción de TI en contextos educativos por parte de los docentes. Bajo el supuesto que el resultado de la interacción entre los docentes y las TI no depende de las formas en que se presentan las máquinas sino de cómo los docentes forjan una dinámica relacional que es acorde con sus creencias, se propone un esquema de adopción tecnológica de tres etapas con dos fases de transición entre ellas. El nuevo planteamiento pretende por un lado dinamizar y actualizar los enfoques tradicionales además de disipar dudas conceptuales en relación a la tecnología y los “usos” pedagógicos.
Los docentes en relación con las tecnologías
Authors: Roa Magdalena , Stipcich Mª. Silvia
Published: July 2021

La entrada al aula de tecnologías de la información y la comunicación (TICs) redefine los modos comunicativos y el uso del conocimiento entre docentes y estudiantes y estudiantes entre sí. El ingreso a las pedagogías higth tech demanda que el docente se resitúe a la luz del modelo tecnológico encarnado en las TICs que incorporan a sus clases. Esta investigación se enmarca en un estudio de caso en el que se aspira a reconstruir la actuación de la práctica de un docente de Física durante la incorporación de applets a sus clases. Para conocer el estado del arte en la relación docentes y nuevas tecnologías se realiza una revisión bibliográfica. Es posible inferir la necesidad de acompañar a los docentes cuando implementan tecnologías en su práctica.
Redes sociales y aprendizaje a través de las presentaciones on-line
Authors: García Manzano Andrés A.
Published: July 2021

A primera vista, parecería que no hay mucha relación entre desarrollar una presentación tipo PowerPoint e interactuar de manera flexible con un auditorio remoto. Sin embargo, recientemente están apareciendo algunas interesantes propuestas de la web social que permiten difundir, comentar e, incluso, construir de colaborativamente todo tipo de presentaciones.En la presente revisión monográfica abordaré el tema desde una perspectiva tecnológica y pedagógica, incidiendo, como de costumbre, en el valor que estos novedosos desarrollos de la Web 2.0 pudieran tener en diferentes situaciones reales de enseñanzaaprendizaje con alumnos de Secundaria y Bachillerato. Los temas a tratar serán:- Presentaciones, estilos cognitivos y netgens.- Presentaciones “on-line” y redes sociales educativas.- Herramientas web para diseñar y compartir presentaciones.- Propuesta para el uso efectivo de las presentaciones on-line.
LMS: estratégia complementar de aprendizagem de línguas no âmbito dos EILCs?
Authors: Gonçalves Teresa María
Published: July 2021

O presente artigo assenta no pressuposto de que a utilização de uma Plataforma de Gestão da Aprendizagem (LMSs – Learning Management Systems) num dos módulos de um curso intensivo de Português Língua Estrangeira (PLE), de nível intermédio, para alunos em mobilidade pela Europa, ao abrigo do Programa ERASMUS, pode ser uma estratégia adequada para responder às necessidades diversificadas e às motivações díspares dos alunos que frequentam EILCs (ERASMUS Intensive Language Course), quer os promovidos e financiados pelas Agências Nacionais do Programa Aprendizagem ao Longo da Vida quer os não financiados, oferecidos por instituições de ensino superior e por centros de línguas por essa Europa fora. Consequentemente, apresentamos uma proposta de organização da plataforma para implementar um módulo de um EILC.
Los mapas cognitivos difusos y su aplicación en la investigación de las ciencias sociales: estudio de sus principales problemáticas
Authors: Infante-Moro Alfonso , Infante-Moro Juan C. , Gallardo-Pérez Julia
Published: July 2021

La metodología de los Mapas Cognitivos Difusos (MCD) es una de las más relevantes en el estudio del conocimiento y, probablemente, una de las más utilizadas en los últimos tiempos por los investigadores en sus estudios y proyectos. Este artículo analiza a través de una revisión bibliográfica por las principales bases de datos científicas, el uso de esta herramienta en la investigación científica y su aplicación en las ciencias sociales, además de aportar referencias históricas al respecto. Muestra las principales características de la metodología, sus posibilidades y limitaciones, sus diferencias con su antecesor (los Mapas Cognitivos), las fases operativas para su aplicación y las diferentes formas de captación de información. Además de demostrar la idoneidad de su aplicación en el ámbito de las ciencias sociales y estudiar sus mayores problemáticas, la identificación de los conceptos involucrados dentro del sistema a estudiar, la selección de expertos y los coeficientes o pesos de los conocimientos de cada uno de estos, ofreciendo sugerencias y aportaciones para una correcta identificación de los conceptos involucrados, una correcta selección de estos expertos y una correcta cuantificación de sus coeficientes de “conocimiento experto”.
Las Tecnologías de Información y Comunicación y las mujeres: ¿pueden las nuevas tecnologías desbaratar el género?
Authors: Stromquist Nelly P.
Published: July 2021

Las TIC se han convertido en un referente que ha transformado el mundo enel que vivimos. La globalización, los grandes flujos de personas del Sur al Norte, laflexibilidad que dan las tecnologías a la comunicación rápida y veloz son elementos quecaracterizan el nuevo mundo en el que vivimos. En este artículo se presenta una reflexiónsobre el papel que han jugado las TIC en las transformaciones sociales de losúltimos decenios. Se analizan varios movimientos sociales y el impacto que han tenidosobre la participación democrática. Se exploran también las nuevas posibilidades que seabren a las mujeres en este nuevo contexto, y se presentan algunas opciones de desarrolloque pueden ayudar a superar situaciones de exclusión.
Ser libre, actuar con libertad y liberarse. Peter Mclaren y la pedagogía de la liberación
Authors: Mclaren. Peter
Published: July 2021

McLaren, en esta entrevista, reflexiona sobre diferentes enfoques en el ámbitode la pedagogía crítica y se detiene en interpretaciones que se han derivado de la obrade Freire, incidiendo en la necesidad de reflexionar sobre la propia práctica para encontrarformas que posibilitan que personas oprimidas se conviertan en protagonistas de lahistoria. Así mismo, este autor explica como parte de su trabajo se centra en dar fuerza alos movimientos anti-capitalistas en Norte América y formular una alternativa al capitalismoglobal, reflexionando sobre el papel que puede jugar en ello la pedagogía crítica.Destaca el papel clave del profesorado en el desarrollo de pedagogías anti-capitalistasen el seno de las actuales sociedades cambiantes, afectadas por acontecimientos internacionalescomo la elección de Obama o la crisis económica, donde las escuelas puedenconvertirse en espacios para la producción de conocimiento crítico y para la acción sociopolítica.
La pizarra digital interactiva como recurso docente
Authors: Gallego Domingo J. , Cacheiro María Luz , Dulac Ibergallartu José
Published: July 2021

La Pizarra Digital Interactiva (PDI) es un recurso de grandes posibilidades educativas para los docentes. En este artículo se presentan los resultados de distintas investigaciones que han analizado el uso de la PDI a través de distintos programas de formación docente en distintos niveles educativos y áreas curriculares. A diferencia de otros recursos en los que el docente está en un «segundo plano», una de las ventajas del uso de la PDI es la cercanía al modelo tradicional de enseñanza en la que el profesor presenta los contenidos principales para pasar a las actividades de aprendizaje individuales y grupales. En la sociedad del conocimiento el docente debe adaptar su metodología aprovechando la riqueza de los recursos que ofrece la red y que están disponibles en el aula a través de la PDI, así como la creación de recursos propios integrando objetos multimedia disponibles.
¿Son las tecnologías de la información capaces de cambiar las formas de hacer política? Estudio de casos en Galicia
Authors: García Vázquez Yolanda , Ferrás Sexto Carlos
Published: July 2021

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En la sociedad industrial los políticos tenían que dominar el lenguaje de la TV pues interesaba más la intensidad de la reacción que la duración del mensaje; debían emplear frases contundentes. En la Sociedad de la Información, con las tecnologías de la comunicación (Tic), esto cambia considerablemente pues la sociedad gana pluralismo y hay más voces que se hacen oír. Aparecen los Blogs como una forma de emitir opinión e información, que podemos considerar como una forma de expresión alternativa (aportan visiones diferentes de las noticias, ignoradas por los grandes medios). Los activistas, partidos políticos, instituciones y ciudadanos encuentran en las Webs, Blogs o Wikis un instrumento para insistir y crear opinión. Las Tic y las herramientas colaborativas de la Web 2.0 generan un mayor interés social en la política, un mayor compromiso e implicación de los individuos y la desaparición de los intermediarios políticos. En estas páginas se muestra una reflexión sobre los impactos de las Tic en la política a nivel teórico, y los resultados de un análisis cualitativo de casos a partir de la observación del uso que hacen de las Tic la plataforma ciudadana “Nunca Máis”, el gobierno autónomo de la Xunta de Galicia, el Parlamento de Galicia y el partido político Bloque Nacionalista Galego.
Comunicación joven: a propósito de la fascinación y la prestación educativa de los nuevos medios
Authors: González Faraco Juan Carlos , Gramigna Anita
Published: July 2021

Este artículo pretende responder a esta pregunta: ¿por qué los lenguajes multimedia gustan tanto a los jóvenes? Después de definir las características de estos lenguajes, se analiza el papel que las nuevas tecnologías juegan en el imaginario de los jóvenes, y se estudian específicamente aquellos factores que podrían contribuir a mejorar su aprendizaje y, en general, su educación. Finalmente, se alude a los procesos cognitivos que subyacen a las actividades que los jóvenes realizan con el ordenador y a las formas de pensamiento y comunicación que promueven estos nuevos medios tecnológicos.
Soporte tecnológico y gestión educativa de la inmigración
Authors: Priegue Caamaño Diana
Published: July 2021

La inmigración se ha ido conformando a lo largo de las últimas décadas como un fenómeno de creciente importancia, y, sobre todo, uno de los mayores retos a los que tendrá que hacer frente la sociedad en su conjunto y, en particular, las instituciones educativas. De manera simultánea, asistimos a un intenso desarrollo de las TIC con clara repercusión en el terreno educativo y en la actuación de sus profesionales. Por todo ello, uno los principales propósitos de este trabajo es poner de manifiesto las posibilidades que ofrecen las TIC en una sociedad como la actual donde la multiculturalidad plantea nuevos desafíos. Sabemos, tras el recorrido realizado, que la tecnología pone a nuestra disposición recursos de enorme potencial que, en mayor o menor medida, pueden ser de gran ayuda para trabajar a favor de una educación más comprometida con la equidad en la esfera pública.
Los alumnos erasmus en la Torre de Babel: el aprendizaje de lenguas extranjeras basado en las competencias comunicativas y en el uso de las TIC
Authors: Aguaded Gómez Ignacio , Pozo Vicente Cristina
Published: July 2021

Más de un millón de estudiantes en Europa han tenido la posibilidad de intercambiar vida universitaria en otros centros europeos de educación superior, abriendo inmensas perspectivas de conocimiento, relaciones culturales y comunicativas. Con la movilidad de alumnos y profesores, Europa afianza, en la práctica, su identidad en un universo global. Este trabajo presenta los resultados de un análisis de las competencias comunicativas y el uso de las Tecnologías de la Información y de la Comunicación de estudiantes de intercambio alemanes. Los datos se obtuvieron a partir de dos cuestionarios que realizaron 20 estudiantes del Romanisches Seminar de la Universität Bonn, cuya lengua nativa es el alemán y su segunda lengua extranjera el español. En términos generales, los resultados confirman que la estancia de seis meses en un país de habla hispana incrementa, en primer lugar, las competencias comunicativas en la lengua española y, además, el uso de las TIC en lenguas extranjeras.
Predictor factors of pulmonary hypertension in children with left-to-right shunting in acyanotic congenital heart disease
Authors: Inrianto Weny , Murni Indah Kartika , Safitri Ida
Published: July 2021

Background Left-to-right shunting in acyanotic congenital heart disease (CHD) is the most common type of defect in childhood heart disease. Limited access to specialist health services causes delays in CHD management. In limited resource settings, identification of factors that influence the occurrence of pulmonary hypertension is important in order to decide which patients should be prioritized for defect closure to prevent further complications.

Objective To determine predictive factors of pulmonary hypertension after a left-to-right shunt CHD diagnosis.

Methods This retrospective cohort study included children aged 1 month to 17 years with isolated atrial septal defect, or ventricular septal defect, or patent ductus arteriosus. Potential predictors studied were iron deficiency anemia, mitral regurgitation, pneumonia, and heart failure. Bivariate analysis was done with Chi-square test and multivariate analysis was done with Cox regression to determine the hazard ratio.

Results Pulmonary hypertension occurred in 68 of 176 subjects. Iron deficiency anemia, mitral regurgitation, and pneumonia were not predictives of pulmonary hypertension. However, heart failure was a significant predictive factor for pulmonary hypertension, with a hazard ratio of 4.1 (95%CI 2.2 to 7.5; P=0.001).

Conclusions Heart failure is a predictive factor of pulmonary hypertension in children with left-to-right shunting in acyanotic CHD.
Serum ferritin levels and endocrine disorders in children with thalassemia major
Authors: Dewiyanti Evi , Aditiawati Aditiawati , Sari Dian Puspita
Published: July 2021

Background Endocrine disorders in thalassemia major children patients occur due to iron overload and hemosiderosis in endocrine organs. Early detection is needed to prevent complications and improve the quality of life. An association between serum ferritin and endocrine disorders in thalassemia patients has been inconclusive to date.

Objective To analyze for possible associations between serum ferritin and endocrine disorders (short stature, delayed puberty, delayed bone age, hypothyroidism, impaired glucose tolerance, and diabetes mellitus) and the incidence of each disorder  in thalassemia major.

Methods There were 115 thalassemia major patients aged 10-18 years involved in our cross-sectional study from June 2019 - June 2020 in the Pediatrics Department, DR. M Hosein Hospital, Palembang, South Sumatera. Anthropometry and socioeconomic status informations  were collected from physical examination and interview. Ferritin, FT4, TSH, Hb and glucose levels measured by using standard methods for each item in the laboratory, mean while the skeletal age assessment  was determined by using  FELS method.

Results This study included 83 (72.2%) girls and 32 (27.8%) boys. There were 89 (77.4%) subjects with short stature, 74 (64.4%) with delayed bone age, 30 (26.1%) with impaired glucose tolerance, 25 (21.7%) with delayed puberty, 4 (3.5%) with diabetes mellitus (DM), and none with hypothyroidism. Bivariate and multivariate analyses revealed no associations between serum ferritin and short stature, delayed bone age, impaired glucose tolerance, delayed puberty, and DM.

Conclusion There is a high prevalence of endocrine disorders in pediatric thalassemia patients, especially short stature and delayed bone age. However, there are no associations between serum ferritin and endocrine disorders in these patients.
Hubungan Status Gizi dengan Usia Kejang Demam Pertama pada Anak
Authors: Intania Ririn , Dimiati Herlina , Ridwan Azwar
Published: July 2021

Latar belakang. Demam pada kejang demam dapat disebabkan oleh proses infeksi yang dimungkinkan terjadi akibat malnutrisi pada balita dan digambarkan dalam penilaian status gizi. Tujuan. Mengetahui hubungan status gizi dengan usia kejang demam pertama pada anak.Metode. Penelitian analitik cross-sectional dengan pendekatan retrospektif menggunakan data sekunder rekam medis pasien rawat inap kejang demam anak periode Januari – Desember 2019 di RSUD Prof. Dr. M. A. Hanafiah SM, Batusangkar, Sumatera Barat. Sampel penelitian terdiri atas 95 anak dengan kejang demam pertama yang dipilih dengan teknik consecutive sampling. Penelitian dilaksanakan pada 07 sampai dengan 21 November 2020. Pengolahan data menggunakan analisis univariat, bivariat dengan uji korelasi Spearman. Hasil. Anak dengan kejang demam pertama memiliki gizi baik (50,5% berdasarkan indeks IMT/U dan 51,6% berdasarkan indeks BB/PB atau BB/TB), dan berada dalam kelompok umur batita (12 bulan ≤ usia kejang demam pertama <36 bulan) dengan rata – rata usia kejang demam pertama 24,42 bulan. Uji Spearman menunjukkan tidak terdapat hubungan yang signifikan antara status gizi dengan usia kejang demam pertama baik berdasarkan indeks IMT/U (p=0,260) maupun berdasarkan indeks BB/PB atau BB/TB (p=0,386).Kesimpulan. Tidak terdapat hubungan yang bermakna antara status gizi dengan usia kejang demam pertama pada anak.
Perbedaan dan Pola Jumlah Trombosit, Leukosit, serta Hematokrit pada Penderita Dengue Fever dan Dengue Hemorrhagic Fever di Ruang Rawat Inap Anak RS Kristen Mojowarno Kabupaten Jombang
Authors: Assegaf Samira - , Puspitasari Dwiyanti , Ginting Amor Peraten
Published: July 2021

Latar belakang. Infeksi virus dengue sering menyerang anak rusia di bawah 15 tahun. Jumlah kasus cukup tinggi terdapat di Kabupaten Jombang, Jawa Timur. Pola jumlah trombosit, leukosit, dan hematokrit dapat berfungsi sebagai prediktot perjalanan penyakit pada kasus dengue.Tujuan. Untuk mengetahui perbedaan dan pola jumlah trombosit, leukosit serta hematokrit pada penderita DF (dengue fever) dan DHF (dengue hemorrhagic fever) guna memprediksi perjalanan penyakit.Metode. Penelitian ini menggunakan desain cross sectional pada anak yang telah terdiagnosis DF maupun DHF berdasarkan kriteria WHO 2011 dan menjalani perawatan di ruang rawat inap anak RS Kristen Mojowarno Kabupaten Jombang periode Februari-Juli 2019. Data jumlah trombosit, leukosit, hematokrit, suhu tubuh, hari sakit, dan karakteristik penderita diambil dari rekam medis kemudian dianalisis menggunakan independent sample T test dan Mann Whitney.Hasil. Selama kurun waktu penelitian terdapat 127 responden dengan rerata usia 6,67 tahun untuk kasus DF dan 6,43 tahun untuk DHF. Periode defervescent ditemukan pada hari ke-4 sakit. Rerata trombosit pasien DF dan DHF menurun di hari sakit ke-3 dan sangat rendah pada hari sakit ke-6. Rerata trombosit DHF berada di bawah 100.000 sel/mm3 sejak periode defervescent dengan rerata terendah mencapai 74.727 sel/mm3. Rerata leukosit DF dan DHF menurun sejak hari sakit ke-3 dan mencapai puncak penurunan pada periode defervescent. Rerata hematoktit DHF meningkat sejak hari sakit ke-3 dan mencapai puncaknya pada hari sakit ke-5. Terdapat perbedaan yang signifikan pada rerata hematokrit antara pasien DF dan DHF pada hari sakit ke-5 (p=0,004).Kesimpulan. Terdapat perbedaan yang bermakna signifikan pada rerata persentase hematokrit penderita DF dan DHF.
The “Lyrical World” as One of the Manifestations of the Existential Quests of the Characters of G. I. Gazdanov’s Novels when They Perceive Music
Authors: Kukhtenkova Anastasia
Published: July 2021

The article presents the employment of lexical textual paradigms in the explications of related motives in the novels by G. I.  Gazdanov (lyrical world and musical stories). The associative-synonymous microfield lyric world, including metaphorical periphrases, repetitions, different ways of describing the functioning of contextual synonymy, is correlated with the associative-thematic microfield, which is built by the hyponyms reflecting the theme of music, and the distinctive-feature words are signals of states of a performer or a listener of musical sounds. The compositional relation and the significance of these leitmotifs in the manifestations of their confessional character, the prospective function, and the emigrant subtext are established. That is, the reference to the representation of the lyrical world in the works of this writer reveals the interaction of related leitmotifs, reflecting the depths of the characters' confessional nature, the manifestation of their "spiritual psychobiography." The compositional frame of harmonious balance, emotional calmness is the basis of the lyrical world. A specific feature of G.I. Gazdanov’s ideostyle is the supporting of the lyrical world with musical sounds, a blurred boundary between leitmotifs.
Perception of Contemporary Chinese Literature in Russia
Authors: Xue Zhao
Published: July 2021

This article attempts to comprehend the perception of contemporary Chinese literature in Russia. One of the main research areas of Russian Sinology focused on the study of Chinese literature is Chinese classical literature and modern literature. However, at the turn of the XX-XXI centuries, the interest for contemporary Chinese literature becomes more and more obvious. In recent years, the translation of contemporary Chinese literary works has been continuously developing. The most typical characteristic of contemporary Chinese literature in the interpretation of Russian sinologists is pluralism, which is understood as the simultaneous existence of various literary trends, ideologies, genres, etc. The author analyzes the main trends of reception in the research of Russian scientists and comes to the conclusion that the most interesting for sinologists is the problem of attention to “People” in contemporary Chinese literature, the problem of tradition and modernity, the works of Chinese women writers.
Frecuencia y factores de riesgo asociados a re-sangrado posterior a ligadura de várices esofágicas en pacientes con cirrosis hepática
Authors: Sánchez Garzón María Lisseth
Published: July 2021

BACKGROUND: Re-bleeding of esophageal varices after endoscopic ligation is a frequent complication, that significantly increases morbidity and mortality in this patients. This study aims to describe the frequen-cy of rebleeding due to esophageal varices after endoscopic ligation, as well as the frequency of certain factors and their association with rebleeding. METHODS: Cross-sectional, descriptive and correlational, observational study. A total of 179 patients who underwent endoscopic ligation of esophageal varices participated. For the association analysis Chi2 test was applied, prevalence ratio was obtained, with 95% IC. Data was presented with charts, with frequencies and percentages. RESULTS: Alcoholism was the main cause of cirrhosis in patients that underwent ligation of esophageal varices (44.1%). Most of the cases were classified as Child Pugh Sore B functional class, with a frequency of 36.3%. The prevalence of rebleeding was 49.2% (95% CI 41.55%- 56.76%), it was more frequent in patients 65 years old and older (58%), and male patients (64.8%). Death rate due to rebleeding after ligation was 43%. We found significant statistical association of rebleeding with factors such as: TPT >33.3 (PR: 1.91, 95% CI 1.07-3.39, p value =0.00); moderate and severe anemia (PR: 1.43, 95% CI 1.05-1.96, p value =0.02), and blood transfusion (PR: 2.23. 95% CI 1.37-3.65, p value=0.00). CONCLUSION: Rebleeding frequency was 49.2% (early and late rebleeding), it was more common in male patients, and patients aged 65 or more. This study found statistical association between rebleeding and: elevated values of partial thromboplastin time, moderate and severe anemia, and blood transfusion. Mor-tality due to rebleeding was 43%. KEYWORDS: ESOPHAGEAL AND GASTRIC VARICES, LIVER CIRRHOSIS, PORTAL HYPERTENSION
Validación de cuestionario por juicio de expertos: Perfil del Enfermero/a que labora en el Servicio de Emergencia y Urgencias
Authors: Patiño Villalva Gladys Esther , Lambert Eduard , Cantos Espinoza Fanny Lorena , Bolaños Dominguez Pablo Enrique , Barrera Medina Juana del Carmen , Segarra Cevallos Hernán Santiago
Published: July 2021

BACKGROUND: Nursing professionals that work in Emergency and Urgency services, daily carry out direct patient care, in a high stimuli situation and permanent work pressure; therefore it is important to develop a questionnaire that helps establishing an adequate scientific, technical and ethical profile, for nurses who work in Emergency and Urgency hospital areas. METHODS: The aim of this study was to validate a questionnaire able to identify the profile that Emergency and Urgency Services nurses should have. The questionnaire consisted of 32 items, and was validated by 4 experts; Fleiss Kappa coefficient was used to evaluate the agreement between judges. RESULTS: One of the items ( question No.12) was inadequate for all of the judges and had to be withdrawn; 5 items (questions 1,5,9,11 and 19) needed changes, so in accordance with the judges requirements, these changes were made; a total of 26 items obtained an “almost perfect” concordance of totally adequate items. CONCLUSION: The original questionnaire ended with a total of 31 items and has the required content validity. This questionnaire can be validated in the construct through the use of a pilot test applied to nurses in Emergency and Urgency services. This questionnaire makes it possible to evaluate the profile of the nursing staff prior to working in the emergency area. http://dx.doi.org/ KEYWORDS: Emergency nursing, expert testimony, validation study
Clavo Intramedular de Sign en Rodilla Flotante: Una serie de casos
Authors: Tapia Peña Telmo Iván , Tapia Abril Juan-Claude
Published: July 2021

BACKGROUND: “Floating knee” describes ipsilateral fractures of the femur and tibia, where the knee is disconnected from the rest of the limb. The mechanism is usually a high-energy trauma. Rates of infection, lack of union, stiffness of the knee, excessive blood loss, fat embolism, are relatively high; leading to functional impairment and often unsatisfactory results. Immediate definitive reduction and fixation of fractures by intramedullary nail reduces the incidence of complications. METHODS: A descriptive study was carried out, a case series report of 7 patientes treated by the SIGN Intramedullary Nail (IMN); to establish the functional results, concomitant injuries, complications and advantages of this nail, in our practice. RESULTS: The majority of the patients were male, with a mean age of 26 years. All injuries were caused in traffic accidents, 50% of the fractures were exposed fractures. According to the Blake & McBryde classification, 6 were Type I and one case Type IIa. Functional results were evaluated according to the Karlström and Olerud criteria; excellent and good results were obtained in 85% of cases. All of the fractures healed; one case of superficial infection was described, one patient presented limb shortening <3 cm and minor limitation of the knee motion range. CONCLUSION: The SIGN intramedullary nail, was efficient and versatile for the treatment of floating knee in adults. It had good functional results (85%) and low incidence of complications. KEYWORDS: FLOATING KNEE, FEMUR FRACTURE, TIBIAL FRACTURE, FRACTURE FIXATION, INTRAME-DULLARY.