bluuebunny/crossref_metadata_2025 huggingface dataset:
ULTRASSOM MICROFOCADO MPT PARA LIFTING FACIAL: SÉRIE DE CASOS
Authors: Oliveira Larissa Mendonça de , Veronezi Láuscea Regina , Nogueira Marcia Vivianne , Barbosa Chrystianne Rabelo Lima , Ribeiro Henrique Rodrigues , Maia Juliana Lemos , Nobre Rayana Viana Cavalcante , Montezuma Gina Elaine , Santos Marcelo Januzzi
Published: August 2024

Introdução: O ultrassom microfocado MPT (Micro-Pulse Technology) emergiu como uma técnica não invasiva promissora para lifting facial, oferecendo benefícios estéticos sem a necessidade de cirurgia. Este estudo visa avaliar a eficácia do ultrassom microfocado MPT em doze pacientes, observando os resultados de lifting facial. Métodos: Doze pacientes foram submetidos a sessões de ultrassom microfocado MPT. A técnica utiliza pulsos de energia ultrassônica focada para aquecer seletivamente as camadas profundas da pele, estimulando a produção de colágeno e promovendo o efeito de lifting. Cada paciente recebeu um número padronizado de pulsos, distribuídos em áreas específicas do rosto para maximizar os resultados. Resultados: Todos os doze  pacientes apresentaram melhora significativa no contorno facial, com elevação visível da pele e redução da flacidez. A análise pós-tratamento, realizada através de fotografias comparativas e avaliação clínica, confirmou o efeito lifting em todas as áreas tratadas. Discussão: Os resultados obtidos confirmam a eficácia do ultrassom microfocado MPT como uma alternativa viável e segura ao lifting facial cirúrgico. A tecnologia mostrou-se capaz de induzir a neocolagênese, resultando em melhorias estéticas significativas. Este estudo corrobora a literatura existente sobre os benefícios do ultrassom microfocado em procedimentos estéticos não invasivos. Conclusão: O ultrassom microfocado MPT demonstrou ser um método eficaz para lifting facial, proporcionando resultados satisfatórios em todos os doze pacientes tratados. A técnica oferece uma opção não invasiva com mínima recuperação, sendo uma excelente alternativa para indivíduos que buscam rejuvenescimento facial sem os riscos e o tempo de inatividade associados a procedimentos cirúrgicos.
A TUTELA AMBIENTAL APÓS A CONSTITUIÇÃO FEDERAL DE 1988
Authors: Vieira Gustavo Pincerato
Published: August 2024

A Constituição Federal de 1988 postulou diversos dispositivos relacionados à proteção ambiental, os quais contribuem para a sua efetiva proteção. Em seu artigo 5º, inciso LXXIII, legitimou-se ao cidadão a propositura de ação popular que vise anular ato lesivo ao meio ambiente e ao patrimônio histórico e cultural. No âmbito das competências, estipulou-se a competência legislativa concorrente, conferindo à União, aos Estados e ao Distrito Federal a prerrogativa de legislar sobre responsabilidade por dano ao meio ambiente. A responsabilidade ambiental possui natureza distinta, a partir da sua origem: civil (objetiva); administrativa (subjetiva); e penal (subjetiva). A defesa do meio ambiente também foi positivada na Constituição Federal de 1988 como um dos princípios ao meio ambiente, tendo o mesmo diploma normativo erigido o direito ao meio ambiente ecologicamente equilibrado como um direito de todos. Portanto, verifica-se a importância da Constituição Federal de 1988 na tutela ambiental moderna pátria.
ABORDAGEM TERAPÊUTICA COM MELHOR PROGNÓSTICO PARA PECOMA HEPÁTICO.
Authors: Milani Carolina De Marqui , Gomes Cárita Chagas , Borges Micaela Graciane , Thomé Rafaela do Nascimento , Flozi Danielle Lobato Gouveia
Published: August 2024

Tumor de células epitelióides perivasculares (PEComa) pode ser definido como um tumor mesenqui- mal ricamente vascularizado. Os PEComas são identificados histologicamente pela presença de células epitelióides com um padrão de crescimento perivascular. O PEComa hepático é uma forma rara de tumor que se desenvolve a partir de células epitelióides perivasculares no fígado. A suspeita de Tumo- res perivasculares de células epitelióides (PEComas) hepático se dá pela presença de uma massa hepá- tica e suas características morfológicas por meio de exames complementares de imagem como ultras- sonografia, tomografia computadorizada (TC) e ressonância magnética (RM). A análise histopatológi- ca de uma amostra de tecido obtida por biópsia ou após ressecção cirúrgica confirma o diagnóstico de PEComa hepático, através da presença de células epitelióides perivasculares com padrão de cresci- mento distinto quando examinado microscopicamente na amostra. O principal tratamento para PECo- mas hepáticos na atualidade geralmente inclui a ressecção cirúrgica completa ou parcial do tumor, assim como as lesões situadas em outras localidades, sempre que possível. A ablação por radiofre- quência apresenta-se mais vantajosa em relação a cirurgia quando a lesão é localizada e pequena (< 5 cm) ou quando as comorbidades do paciente não são passíveis de cirurgia hepática segura. Estudos de casos clínicos e pesquisas na literatura ajudam a ampliar nossa compreensão a respeito dos PEComas. Avanços na pesquisa são essenciais para melhorar a precocidade do diagnóstico, o manejo clínico e o prognóstico para os pacientes afetados por esta condição fascinante e complexa.
Estrategias de Educación para la Paz
Authors: Samboní Torres Andrea Yineth
Published: August 2024

Esta investigación presenta la importancia de la implementación de estrategias para el fomento de educación para la paz, a partir del análisis de las emociones familiares y comunitarias con experiencias del conflicto armado Colombiano. Con participación de estudiantes y familiares, presentando la afectación tanto en la escuela como en las emociones y la transformación de sus discursos para plantear estrategias de paz.
Los resultados muestran la recomposición de las voces de los participantes, desde la interpretación de la investigadora. Visibilizan las afectaciones emocionales en la comunidad y en los contextos afectados. Los entretejidos narrativos se denominan: Palpando emotividades, permeadas por el conflicto en espacios educativos, Deliberando la alteración de la escuela y comunidad a causa del conflicto armado y Equiparando los discursos y estrategias en la educación para la paz. En estas narrativas los participantes, afloran sus emociones a fin de generar procesos que aporten a la transformación social, vinculada con la paz y la reconciliación. 
Las conclusiones se desarrollan en tres categorías: “Sentires en medio de la guerra”, “Los estragos de la guerra que traspasó la escuela” y “Resurgiendo hacía la paz”. Se evidencia la afectación emocional, económica y física de las familias; así como la reconstrucción de sus vidas a partir del quebranto generado por la violencia. El lugar y la responsabilidad de la educación que permita la construcción de una cultura de paz.
Transforming Car Manufacturing: How Generative AI and Machine Learning Are Revolutionizing Production
Authors: Mandala Vishwanadham
Published: August 2024

The Daimler AG trains Generative Adversarial Network (GAN) to grow the data-confirmed neural networks. The ultimate goal is a production-oriented application that enables faster manufacturing, improved quality, and a more efficient use of resources through a higher level of automation. The success of deep learning-based methods, particularly Generative Adversarial Networks (GANs), has led to new opportunities in generative AI in the manufacturing domain. In a proof of concept, we use a face generator as a metaphor for the generation of complex workpiece surfaces. The GAN transforms a low-resolution surface map - the so-called latent vector - into a high-resolution area on the generated face surface. This is used for the manufacturing of a corresponding face in an automotive body shop. The method is based on a label-to-attribute setup and includes a pre-fitting step for control point generation.
Harmful Effects of Prolonged Sitting Behavior on the General Health of Employees of the University of Hail
Authors: Shamsuddeen Shahida , Maram Abdulaziz Aljudaiae  , Rehab Sulaiman Alshammari
Published: August 2024

Background: Prolonged sitting time has negative consequences on health, although the people is not well aware of these harmful effects. There are limited studies conducted in Saudi Arabia on sitting behavior and its health effects.
Objectives: The purpose of the study was to assess the health status of the prevalence of sitting behavior and its adverse effects among teaching and non-teaching female staff in the University of Hail.
Methodology: Sample of 209 female teaching and non-teaching female staff in the University of Hail were enrolled for the survey. The first part surveyed the demographic characteristics and general health of the respondents, while the second part contained the Nordic Musculoskeletal Questionnaire (NMQ) to assess symptoms. The data collected was coded, entered and statistically analyzed.
Results: The demographic profile of the study population states that overweight people take the highest percent which accounts for 42.58% and 24.88% of study population were normal healthy weight and 19.62% of them were moderately obese. The percentage of weight change during past two years was 41.15% of people gained weight and 30.14% of them reported no change during that period and 28.71% of them lost weight during the past two years. 29.7% of people reported that they stay in sitting position for 5-6 hours at work and 27.3% reported that they spent 7 and more than 7 hours sitting at work.  38.76% of study population reported that they are suffering from lower back pain probably due to prolonged sitting hours and 33.97% of them reported shoulder pain, while 32.06% of them were suffering from neck pain. The results revealed that lower back (38.76%), shoulders (33.97%), and neck (32.06%) symptoms were the most prevalent problems reported by study population in the past 7 days.
Conclusion: Our findings suggest that sitting behavior had adverse effects on the employees. Active workstations are therefore recommended to improve working conditions. The data shows that compared with those who sit the least, those who sit the most have over twice the risk of developing type 2 diabetes and cardiovascular disease, and a 13 percent and 17 percent increased risk of cancer incidence and mortality respectively.
Key words: Musculoskeletal diseases, Sitting, Workplace.
Udvikling af andenordensdidaktisk praksis i Playlabs
Authors: Duedahl Tina Visgaard , Iskov Thomas
Published: August 2024

ResuméFysiske læringsmiljøer er under hastig forandring i videregående uddannelse, hvilket bl.a. afspejles i etableringen af Playlabs på landets professionshøjskoler. Forskning viser, at læreruddannere hér overvejende reproducerer praksis karakteristisk for undervisning i ordinære lokaler. Artiklens tematiske analyse, der beror på videoobservation af undervisningspraksis, viser, hvordan der igennem en designbaseret tilgang udvikles en andenordensdidaktisk praksis i læreruddannelsens Playlabs. En afstemt praksis, hvor læreruddannere forbinder Playlabs materialitet (arkitektur, interiør og artefakter) til undervisningens indhold på måder, som understøtter aktive og eksperimenterende læringssituationer, og som eksplicit begrundes i dialoger relevante for de studerendes praksis i skolen. En undervisningspraksis i Playlabs, som i et andenordensdidaktisk perspektiv er værd for de studerende at lære (at undervise) af.Artiklen bidrager i praksisteoretisk perspektiv med viden til praksis- og forskningsfelter inden for andenordensdidaktik og fysiske læringsmiljøer i læreruddannelse.
AbstractPhysical learning spaces are undergoing rapid change in higher education, as reflected in the establishment of Playlabs at the University Colleges in Denmark. Research shows that teacher educators here predominantly reproduce practices characteristic of teaching in traditional classrooms. A thematic analysis, which is based on video observations of teaching practices, shows how a second-order teaching practice in Playlabs of teacher education is developed through a design-based approach. A coherent practice where the teacher educators bring the materiality of Playlabs (architecture, interior and artifacts) into interaction with the content of the teaching in ways that support active and experimental learning situations, and explicitly reflect upon and justify this practice in dialogues relevant to students’ future practices in schools. A teaching practice in Playlabs that, from a second-order teaching perspective, is valuable for students to learn (to teach) from.The article contributes with empirical knowledge to the fields of practice and research within second-order teaching and physical learning spaces in teacher education.
Undervisningsdifferentiering på læreruddannelsen i et andenordens­didaktisk perspektiv
Authors: Cordsen Rune Frederik , Birkkjær Rasmus , Mørch Thomas Struve
Published: August 2024

ResuméArtiklen undersøger, gennem et scoping review, hvilke gennemgående temaer der kan identificeres på tværs af internationale læreruddannelsers arbejde med undervisningsdifferentiering i et andenordensdidaktisk perspektiv. På baggrund af disse resultater diskuterer artiklen, hvordan man i en dansk læreruddannelseskontekst kan finde inspiration til at arbejde med undervisningsdifferentiering i et andenordendidaktisk perspektiv. Reviewet identificerer og præsenterer tre overordnede temaer, der præsenteres i en narrativ syntese: 1) Studiernes forståelser af undervisningsdifferentiering, 2) Andenordensdidaktiske perspektiver og 3) Diversitet. Artiklen diskuterer, hvorvidt og hvordan man i en dansk læreruddannelseskontekst kan adoptere den overordnede inspiration vedrørende undervisningsdifferentiering fra Carol Ann Tomlinson. Desuden diskuterer artiklen potentialet ved metakommentarer til studerende om differentieret undervisning som en central andenordensdidaktisk tilgang på læreruddannelsen. Slutteligt diskuterer artiklen, hvordan man som læreruddannelse kan forholde sig til diversitet og kommunikationen om diversitet mellem kollegaer, studerende og som uddannelsesinstitution. 
AbstractThis article investigates, through a scoping review, which prominent themes that can be identified across international teacher education programs in their approach to differentiated instruction from a second-order didactic perspective. The article discusses how these findings can inspire the work on differentiated instruction from a second-order didactic perspective within the context of Danish teacher education. The review identifies and presents three overarching themes in a narrative synthesis: 1) The studies’ understandings of differentiated instruction, 2) Second-order didactic perspectives, and 3) Diversity. The article then discusses whether and how the overarching inspiration from Carol Ann Tomlinson on differentiated instruction can be adopted within the context of Danish teacher education. Additionally, the article discusses the potential of using metacommentary to students about differentiated instruction as a central second-order didactic approach. Finally, the article explores how teacher education can address diversity and communication about diversity among colleagues, students, and as an educational institution.
Índice de autores/as y estadísticas del número | List of authors and issue statistics
Authors: Editorial CEFD Gestión
Published: August 2024

Índice de autores/as y estadísticas del número | List of authors and issue statistics
Nota del editor
Authors: Snow Joseph T.
Published: August 2024

N/A
In memoriam Dean William McPheeters (1917-1987): Two Memoirs
Authors: Snow Joseph T. , Dyer Nancy Joe
Published: August 2024

N/A
La frontera del habla 'norteña' en México. Comparación entre los corpus PRESEEA de Tijuana y Mexicali
Authors: Saldívar Arreola Rafael , Frías Castillo Brayan , Lozano Bachioqui Eleonora , Martínez Lugo Erika
Published: August 2024

La variante dialectal del español del noroeste de México es, en muchos sentidos, una de las más recientes en el país. Su estudio y caracterización han tenido diferentes procesos de representación (Lope Blanch, 1970; Henríquez Ureña, 1993; Moreno de Alba, 1994; Moreno Fernández, 2009; Martín Butragueño, 2004; Mendoza Guerrero, 2004; Serrano, 2007). El objetivo del presente trabajo es confirmar si la noción del bajacaliforniano septentrional de Juan Manuel Lope Blanch (1970) se mantiene vigente, tomando como referencia los rasgos fonéticos característicos del habla del noroeste (Mendoza Guerrero, 2004). Esto a través de la comparación en dos corpus del proyecto PRESEEA:  Mexicali y Tijuana. Para ello se consideraron variables lingüísticas, tres fonemas y sus rasgos fonéticos de la variante dialectal del noroeste, y variables sociolingüísticas de género y edad. Los datos obtenidos muestran la presencia de estos rasgos en la actualidad y parecen confirmar la noción del bajacaliforniano septentrional.
La duplicación de clíticos en función de complemento directo en el español de Granada (España)
Authors: Saeta Marcos María del Mar
Published: August 2024

En español se ha observado la presencia de la reduplicación facultativa del complemento directo. En América son abundantes los estudios que explican el rasgo por asociación de la conjugación objetiva de las lenguas indígenas de frontera, si bien también parecen influir variables lingüísticas; en España, el rasgo no se ha analizado con profusión, pues, pese a haberse publicado abundantes estudios teóricos, escasean los análisis con corpus, que atiendan a variables sociales: de ahí la aportación del presente trabajo. Tras seleccionarse una muestra de reduplicados con complemento directo léxico pospuesto granadinos en el corpus PRESEEA, en la que no se descartan leísmos, se cruzaron estadísticamente con aquellos casos no duplicados en los que, presentando clítico, la concordancia objetiva era posible. Se concluye la relevancia de las variables lingüísticas, tales como el carácter no etimológico del complemento directo átono, el género del referente y determinados verbos; la significación de una variable social, el nivel de estudios, queda aún por confirmar.
Un poco de' también significa 'mucho' en PRESEEA-Cali y PRESEEA-Medellín
Authors: Rodríguez Juan José , Marmolejo Caicedo Margareth
Published: August 2024

Esta investigación exploratoria analiza el uso de la expresión cuantificadora 'un poco de' con los significados de *poca cantidad* y *mucha cantidad* en los corpus PRESEEA-Cali y PRESEEA-Medellín. Se encontraron 20 ocurrencias en Cali y 14 en Medellín, que fueron analizadas cualitativa y cuantitativamente con respecto a cuatro variables lingüísticas (mucha/poca cantidad, nombres abstractos/concretos, nombres contables/no contables y nombres plurales/singulares) y a las variables de preestratificación (sexo, edad y nivel educativo). De las 34 ocurrencias, 9 indican poca cantidad y 25 mucha cantidad. Esto muestra una mayor frecuencia del uso no tradicional de la expresión cuantificadora en ambos corpus. En la mayoría de los casos en que 'un poco de' denota mucha cantidad se acompaña de un nombre contable plural o colectivo. Para el significado recurrente de poca cantidad, se emplea la fórmula 'un poco de' + nombre singular abstracto. Para las variables sociales, se observó un mayor uso del significado de 'mucha cantidad' en los hombres, la primera generación y el nivel educativo bajo, aunque 'un poco de' con el significado de mucha cantidad estuvo presente en todos los grupos sociales estudiados.
Aproximación al estudio de los anglicismos en dos comunidades de PRESEEA México: Puebla y Mexicali
Authors: Franco Erik , Palacios Niktelol
Published: August 2024

Este trabajo presenta un estudio comparado de los anglicismos léxicos encontrados en 36 entrevistas de dos comunidades de PRESEEA México: Puebla y Mexicali. Desde una perspectiva dialectal, Puebla es una variedad del Altiplano mexicano, mientras que Mexicali corresponde a la frontera noroeste bajacaliforniana. Nuestro análisis se enfoca en las características gramaticales y referenciales de estos anglicismos y en contrastar su presencia y frecuencia de aparición en estas entrevistas. Damos cuenta de aquellos anglicismos compartidos y diferentes en ambos corpus y buscamos indicios cuantitativos y cualitativos para determinar si una zona es más anglicista que la otra. Partimos de la idea de que Mexicali podría ser más anglicista por encontrarse cerca de la frontera con EUA, lo que, en principio, representaría una zona de mayor contacto entre el español y el inglés. Los resultados comprueban parcialmente nuestras hipótesis y destacan la importancia de los préstamos en nombres propios.
Mutaciones en el acervo léxico del español de la ciudad de México (1997-2022). Un estudio de panel con materiales del corpus PRESEEA
Authors: Montiel Pérez Dinorah Beatrix , Serrano Morales Julio César
Published: August 2024

Con el fin de determinar cambios léxico-semánticos en español de la Ciudad de México, se realizó un estudio de panel con 19 personas entrevistadas en el año 2022; estas personas forman parte del corpus original PRESEEA - Ciudad de México, levantado entre 1997 y 2006. Entre las entrevistas originales y las actuales existe una distancia temporal promedio de 20 años. Se decidió hacer un análisis del vocabulario que suele ser marcado lexicográficamente en los diccionarios. Las marcas exploradas fueron: popular, grosero, tradición culta y préstamos. Se llevaron a cabo pruebas estadísticas (hipótesis mula y análisis de correspondencia) que permitieran conocer la dependencia entre las categorías léxicas exploradas y las variables sociolingüísticas de edad, sexo y nivel de instrucción. Los resultados confirman fenómenos tales como estratificación por edad, cambio individual, nivelación sociolingüística y un cambio de actitud hacia determinadas categorías léxicas.
MFAM-AD: an anomaly detection model for multivariate time series using attention mechanism to fuse multi-scale features
Authors: Xia Shengjie , Sun Wu , Zou Xiaofeng , Chen Panfeng , Ma Dan , Xu Huarong , Chen Mei , Li Hui
Published: August 2024

Multivariate time series anomaly detection has garnered significant attention in fields such as IT operations, finance, medicine, and industry. However, a key challenge lies in the fact that anomaly patterns often exhibit multi-scale temporal variations, which existing detection models often fail to capture effectively. This limitation significantly impacts detection accuracy. To address this issue, we propose the MFAM-AD model, which combines the strengths of convolutional neural networks (CNNs) and bi-directional long short-term memory (Bi-LSTM). The MFAM-AD model is designed to enhance anomaly detection accuracy by seamlessly integrating temporal dependencies and multi-scale spatial features. Specifically, it utilizes parallel convolutional layers to extract features across different scales, employing an attention mechanism for optimal feature fusion. Additionally, Bi-LSTM is leveraged to capture time-dependent information, reconstruct the time series and enable accurate anomaly detection based on reconstruction errors. In contrast to existing algorithms that struggle with inadequate feature fusion or are confined to single-scale feature analysis, MFAM-AD effectively addresses the unique challenges of multivariate time series anomaly detection. Experimental results on five publicly available datasets demonstrate the superiority of the proposed model. Specifically, on the datasets SMAP, MSL, and SMD1-1, our MFAM-AD model has the second-highest F1 score after the current state-of-the-art DCdetector model. On the datasets NIPS-TS-SWAN and NIPS-TS-GECCO, the F1 scores of MAFM-AD are 0.046 (6.2%) and 0.09 (21.3%) higher than those of DCdetector, respectively(the value ranges from 0 to 1). These findings validate the MFAMAD model’s efficacy in multivariate time series anomaly detection, highlighting its potential in various real-world applications.
Art design integrating visual relation and affective semantics based on Convolutional Block Attention Mechanism-generative adversarial network model
Authors: Shen Jiadong , Wang Jian
Published: August 2024

Scene-based image semantic extraction and its precise sentiment expression significantly enhance artistic design. To address the incongruity between image features and sentiment features caused by non-bilinear pooling, this study introduces a generative adversarial network (GAN) model that integrates visual relationships with sentiment semantics. The GAN-based regularizer is utilized during training to incorporate target information derived from the contextual information into the process. This regularization mechanism imposes stronger penalties for inaccuracies in subject-object type predictions and integrates a sentiment corpus to generate more human-like descriptive statements. The capsule network is employed to reconstruct sentences and predict probabilities in the discriminator. To preserve crucial focal points in feature extraction, the Convolutional Block Attention Mechanism (CBAM) is introduced. Furthermore, two bidirectional long short-term memory (LSTM) modules are used to model both target and relational contexts, thereby refining target labels and inter-target relationships. Experimental results highlight the model’s superiority over comparative models in terms of accuracy, BiLingual Evaluation Understudy (BLEU) score, and text preservation rate. The proposed model achieves an accuracy of 95.40% and the highest BLEU score of 16.79, effectively capturing both the label content and the emotional nuances within the image.
El uso de videos en los procesos de formación docente: un análisis de las percepciones de futuros profesores en Uruguay
Authors: Carabelli Patricia
Published: August 2024

La diversidad de circunstancias que suceden en las aulas requiere docentes capaces de ejercer su juicio profesional al evaluar y abordar las necesidades de los estudiantes. Con el objetivo de analizar cómo los futuros docentes perciben el desarrollo de estas habilidades críticas, a través de discusiones didácticas basadas en el análisis de videos de lecciones, se realizó un estudio de enfoque cualitativo entre 2018 y 2023. Este estudio examinó casos múltiples (n=5), basados en discusiones a partir de la observación de videos de tres lecciones en un curso de formación en docencia de inglés como lengua extranjera de una institución privada ubicada en Montevideo, Uruguay. A través de la utilización de encuestas (n=33) y entrevistas semiestructuradas a los participantes (n=8), se indagó, mediante técnicas de análisis del discurso, cómo estos conciben las discusiones de videos de lecciones para desarrollar habilidades ligadas a la percepción y puesta en práctica de aspectos pedagógicos. Los dos aspectos percibidos como los más importantes en relación con la selección de videos fueron la autenticidad y la variedad. Se constató que para los practicantes las instancias fueron significativas, puesto que notaron la importancia de poder relacionar con flexibilidad las teorías aprendidas con las necesidades emergentes. Los hallazgos de esta investigación muestran que las discusiones didácticas basadas en el uso de videos de casos educativos en la formación de profesores contribuyen al desarrollo de habilidades ligadas a la percepción de necesidades, de tal forma que se puedan tomar decisiones pedagógicas fundamentadas considerando los complejos procesos de enseñanza y aprendizaje.
Noticing colaborativo en procesos de tele-inmersión real con cámaras 360° en la formación inicial de profesores de matemática
Authors: Chandía Eugenio , Gonzalez Paula , Huencho Anahi
Published: August 2024

Este estudio se centra en la implementación de videos 360° en tiempo real para la formación inicial de profesores de matemáticas de educación básica mediante la tele-inmersión. Se analiza cómo esta tecnología influye en la capacidad de noticing de los estudiantes de pedagogía; es decir, su percepción, habilidades interpretativas y toma de decisiones. A partir de un diseño cualitativo descriptivo, se examinaron las interacciones y decisiones de 32 futuros docentes involucrados en clases de resolución colaborativa de problemas estadísticos. La metodología abarcó cuatro fases de colaboración y reflexión, apoyadas en un modelo de gestión del conocimiento y tele-inmersión utilizando cámaras 360°. Los resultados indicaron que la tele-inmersión facilita un involucramiento profundo en contextos pedagógicos reales, lo que mejora la percepción y capacidad de tomar decisiones desde el contacto con el nivel de docentes experimentados. La inmersión, en sinergia con la colaboración entre docentes en ejercicio y formadores académicos, propició una transición efectiva en varias categorías clave como: el rol, desde estudiante a profesor; el espacio, del aula universitaria al escolar; el conocimiento, de uno general a uno específico en la resolución y guía de problemas estadísticos; y la actividad, desde el diseño hasta la implementación. A pesar de los desafíos técnicos, la tele-inmersión demostró ser una herramienta invaluable para la formación docente, al promover una integración más profunda y efectiva entre teoría y práctica.
Association between Ava II Polymorphism in LDL Receptor Gene and Hyperlipidemic Ischemic Stroke Patients
Authors: Momoh Johnson Oshiobugie , Daisy Valentine Damilola , Udebuan Onyinye Anulika , Alagi Joseph Okebe
Published: August 2024

Increased plasma level of low density lipoprotein-cholesterol (LDL-C) is a risk factor for atherosclerosis development and severity. The low-density lipoprotein receptor (LDL-R) is one of the control mechanisms that the liver uses for cholesterol homeostasis. Gene variations in the LDL-R have been reported to cause hypercholesterolemia and consequently lead to cardiovascular diseases (CVD). The study investigates the association between polymorphism of the LDL-R gene and plasma lipid parameters levels in patients with ischemic stroke. 115 controls and 95 ischemic stroke patients matched for sex and age were enrolled in the study. Lipid profiles were measured using biochemical standards methods and lipoprotein ratios were calculated. Ava II (rs5925) genotypes were performed by PCR-RFLP combined with 2% gel electrophoresis. The frequencies of A-A-, A-A+ and A+A+ genotypes for LDL-R gene polymorphism were 73.04%, 23.48% and 3.48% for the control, 18.95%, 72.63% and 8.42% for the ischemic stroke subjects (P<0.0001) respectively. The frequencies of A- and A+ alleles were 84.78% and 15.22% for the control and 55.26% and 44.74% for the stroke subjects (P<0.0001) respectively. The study shows that the mutant allele of the LDL-R gene was associated with dyslipidemia for both subjects. The subjects with A-A- genotype had significant (P=0.0001-0.0063) lower plasma levels of TC, TG, LDL-C, VLDL-C, Non-HDL-C, TC/HDL-C, TG/HDL-C, LDL-C/HDL-C, AIP and AC than the subjects with A-A+ and A+A+ genotypes for both subjects. The effect of LDL-R gene Ava Ⅱ polymorphism on plasma lipid levels is associated with higher lipid parameters for both subjects.
Influence of Plant Growth Regulators on Yield and Qualitative Parameters in Strawberry (Fragaria x anannasa) cv. Winter Dawn under Protected Cultivation
Authors: Lamba Maya , Kumar Suresh , Mehta Akshay
Published: August 2024

The present investigation was carried out during 2021-2022 to find out the effect of plant growth regulators on yield and qualitative parameters in strawberry (Fragaria x anannasa) cv. Winter Dawn under protected cultivation at Precision Farming Development Centre (PFDC), Department of Horticulture, Chaudhary Charan Singh Haryana Agricultural University, Hisar. The experiment was conducted with ten treatments using randomized block design. Each treatment had three replication. The treatment consisted of three different concentration of plant growth regulators viz. T1: NAA 25 ppm, T2: NAA 50 ppm, T3: NAA 75 ppm, T4: GA3 25 ppm, T5: GA3 50 ppm, T6: GA3 75 ppm, T7: CCC 500 ppm, T8: CCC 750 ppm, T9: CCC 1000 ppm and T10: Control. The yield and quality of strawberry were significantly influenced by plant growth regulators. The highest quality of fruit in term of berry weight (16.57g), berry breadth (2.87cm), berry length (3.97cm), TSS (9.38oBrix), TSS/acid ratio (14.89) and ascorbic acid (60.13mg/100g) were observed in T9 treatment which was consist cycocel@1000 ppm while GA3@75 ppm gave maximum results in terms of marketable yield (88.27%), yield per plant (304.26g) and anthocyanin (5.67mg/100g) in strawberry fruit.
Public Health Policies and Programs for Alzheimer’s and Dementia: A Data-Driven Evaluation of Effectiveness and Areas for Improvement in the United States
Authors: Akindahunsi Taiwo , Fadojutimi Busola Lanre , Olasunkanmi Faith D , Tundealao Samuel
Published: August 2024

This study critically evaluates the effectiveness of public health policies and programs targeting Alzheimer's and dementia care in the United States, with a specific emphasis on early detection, disparities in access to care, and variations in service quality between urban and rural healthcare facilities. The research utilizes a representative sample sourced from national databases, including the World Bank’s Quality of Government (QoG) dataset, CDC’s Alzheimer’s Disease and Healthy Aging Data Portal, and the Alzheimer's Association. Logistic regression models were employed to assess the influence of early detection programs on patient outcomes, while disparities in access to care were analyzed through regression models that incorporated demographic and geographic data from the National Institute on Aging and the CDC. The study also conducted extensive surveys targeting patients and healthcare providers across various settings to evaluate service quality. The findings reveal that while early detection programs are indispensable, their mere availability does not guarantee improved patient outcomes unless accompanied by high-quality implementation strategies. Significant disparities in access to care were identified, particularly along the lines of age and race, with minority groups and younger populations experiencing more significant barriers. Additionally, the study revealed pronounced differences in service quality between urban and rural areas, with rural healthcare facilities lagging in patient satisfaction, staff qualifications, and facility resources. The study recommends several targeted interventions: enhancing the quality and implementation of early detection programs, particularly in underserved areas; addressing disparities in care access by expanding Medicaid coverage and increasing funding for community health initiatives; and investing in rural healthcare infrastructure to bridge the gap in service quality and improve the overall care and support for Alzheimer’s and dementia patients, particularly in marginalized communities.
Management of Procurement of Milk and Marketing of Milk and Milk Products by Vijayapura and Bagalkot Milk Union Limited (VIMUL), Karnataka, India
Authors: Relekar Swati Prakash , Rebasiddanavar Revappa M. , Mitrannavar D. H. , Vajramma Boggala
Published: August 2024

Livestock, particularly milch animals, significantly contribute to the livelihoods of many families in India, particularly among resource-poor farmers. This study focuses on the business performance of Vijayapura and Bagalkot Milk Union Limited (VIMUL) in Karnataka, India. Both primary and secondary data were utilized, and analysed using techniques like seasonal indices, compound growth rate analysis (CAGR) and tabular presentations. This study examines the trends and fluctuations in milk procurement, pricing, and product sales at VIMUL over four distinct periods from 1986-87 to 2021-22. Analysis revealed significant increases in both the quantity of milk procured and the cost of transportation. Monthly milk procurement volumes grew substantially, with a notable rise from an average of 20,269.74 liters per day in Period I to 163,200.53 liters in Period IV. Concurrently, transportation costs per liter surged from ₹0.40 to ₹1.89. Prices for cow milk rose from an average of ₹5.08 per liter in Period I to ₹28.45 per liter in Period IV, while buffalo milk prices increased from ₹6.34 to ₹42.33 per liter. Significant growth rates were observed, with Period III showing the highest increases in producer prices due to enhanced government subsidies and policy initiatives like the Ksheerabhagya Yojana. Monthly seasonal indices indicated variations in procurement levels, with peaks in January and February, reflecting high milk production during flush seasons, and lows in August due to reduced production. Sales volumes for milk increased from 17,726.75 liters per day in Period I to 70,818.33 liters in Period IV, with notable growth in product-specific categories. Flavored milk sales showed a negative growth rate in the latest period, while curd and ghee experienced significant increases. These findings underscore the need for strategic improvements in procurement and distribution processes, as well as targeted policy adjustments to support dairy farmers and enhance market stability.
Toronto area ozone: Long‐term measurements and modeled sources of poor air quality events
Authors: Whaley C. H. , Strong K. , Jones D. B. A. , Walker T. W. , Jiang Z. , Henze D. K. , Cooke M. A. , McLinden C. A. , Mittermeier R. L. , Pommier M. , Fogal P. F.
Published: October 2015

The University of Toronto Atmospheric Observatory and Environment Canada's Centre for Atmospheric Research Experiments each has over a decade of ground‐based Fourier transform infrared (FTIR) spectroscopy measurements in southern Ontario. We present the Toronto area FTIR time series from 2002 to 2013 of two tropospheric trace gases—ozone and carbon monoxide—along with surface in situ measurements taken by government monitoring programs. We interpret their variability with the GEOS‐Chem chemical transport model and determine the atmospheric conditions that cause pollution events in the time series. Our analysis includes a regionally tagged O3 model of the 2004–2007 time period, which quantifies the geographical contributions to Toronto area O3. The important emission types for 15 pollution events are then determined with a high‐resolution adjoint model. Toronto O3, during pollution events, is most sensitive to southern Ontario and U.S. fossil fuel NOx emissions and natural isoprene emissions. The sources of Toronto pollution events are found to be highly variable, and this is demonstrated in four case studies representing local, short‐, middle‐, and long‐range transport scenarios. This suggests that continental‐scale emission reductions could improve air quality in the Toronto region. We also find that abnormally high temperatures and high‐pressure systems are common to all pollution events studied, suggesting that climate change may impact Toronto O3. Finally, we quantitatively compare the sensitivity of the surface and column measurements to anthropogenic NOx emissions and show that they are remarkably similar. This work thus demonstrates the usefulness of FTIR measurements in an urban area to assess air quality.
The ionospheric responses to the 2011 Tohoku, 2012 Haida Gwaii, and 2010 Chile tsunamis: Effects of tsunami orientation and observation geometry
Authors: Grawe Matthew A. , Makela Jonathan J.
Published: October 2015

We show the ionospheric signatures of the 28 October 2012 Haida Gwaii tsunami in both the total electron content (TEC) and the airglow layer. In addition, previously reported ionospheric signatures from the 11 March 2011 Tohoku and 27 February 2010 Chile tsunamis are reexplored in comparison to the newer Haida Gwaii detections. These events provide excellent test cases in the study of tsunami‐ionospheric coupling efficiency, which is most notably affected by the observation geometry, tsunami propagation direction, and background ionospheric density. A simple calculation is developed that incorporates observation geometry to predict the relative coupling efficiency. The predictions are compared to the TEC observations and limitations are discussed.
Dynamic radio spectra from two fireballs
Authors: Obenberger K. S. , Taylor G. B. , Lin C. S. , Dowell J. , Schinzel F. K. , Stovall K.
Published: October 2015

We present dynamic spectra from the Long Wavelength Array telescope of two large meteors (fireballs) observed to emit between 37 and 54 MHz. These spectra show the first ever recorded broadband measurements of this newly discovered VHF emission. The spectra show that the emission is smooth and steep, getting very bright at lower frequencies. We suggest that this signal is possibly emission of Langmuir waves and that these waves could be excited by a bump‐on‐tail instability within the trail. The spectra of one fireball display broadband temporal frequency sweeps. We suggest that these sweeps are evidence of individual expanding clumps of emitting plasma. While some of these proposed clumps may have formed at the very beginning of the fireball event, others must have formed seconds after the initial event.
The impact of solar wind ULFBzfluctuations on geomagnetic activity for viscous timescales during strongly northward and southward IMF
Authors: Osmane A. , Dimmock A. P. , Naderpour R. , Pulkkinen T. I. , Nykyri K.
Published: October 2015

We analyze more than 17 years of OMNI data to statistically quantify the impact of IMFBzfluctuations onALby using higher‐order moments in theAL‐distribution as a proxy. For strongly southward interplanetary magnetic field (IMF), theALdistribution function is characterized by a decrease of the skewness, a shift of its peak from −30 nT to −200 nT, and a broadening of the distribution core. During northward IMF, the distribution ofALis characterized by a significant reduction of the standard deviation and weight in the tail. Following this characterization ofALfor southward and northward IMF, we show that IMF fluctuations enhance the driving on timescales smaller than those of substorms by shifting the peak of the probability distribution function by more than 150 nT during southward IMF, and by narrowing the distribution function by a factor of 2 during northward IMF. For both southward and northward IMF, we demonstrate that high power fluctuations inBzsystematically result in a greater level of activity on timescales consistent with viscous processes. Our results provide additional quantitative evidence of the role of the solar wind fluctuations in geomagnetic activity. The methodology presented also provides a framework to characterize short timescale magnetospheric dynamics taking place on the order of viscous timescalesτ≪ 1 hour.
Solar control of F region radar backscatter: Further insights from observations in the southern polar cap
Authors: Lamarche Leslie J. , Makarevich Roman A.
Published: October 2015

The role of solar wind and illumination in production of small‐scale F region plasma irregularities is investigated using a 4 year data set collected by the Super Dual Auroral Radar Network (SuperDARN) facility at the McMurdo station, Antarctica (MCM). Statistical analysis of ionospheric echoes detected by MCM shows that radar backscatter from the polar F region occurs in wide and persistent bands in range that exhibit systematic changes with local time, season, and solar cycle. It is demonstrated that all variations considered together form a distinct pattern. A comparison with the F region model densities and ray tracing simulations shows that this pattern is largely controlled by the F region solar‐produced ionization during the day. During the night, however, MCM observations reveal a significant additional source of plasma density in the polar cap as compared with the model. An example of conjugate radar observations is presented that supports the idea of polar patches being an additional source of ionization on the nightside. Echo occurrence exhibits a clear peak near the solar terminator, which suggests that small‐scale irregularities form in turbulent cascade from large scales. Further, echo occurrence is enhanced for particular interplanetary magnetic field (IMF) orientations during the night. Observations indicate that solar illumination control of irregularity production is strong and not restricted to the nightside. Indirect solar wind control is also exerted by the IMF‐dependent convection pattern, since the gradient‐drift instability favors certain orientations between the plasma density gradients and convection velocity.
Network dysfunction in α‐synuclein transgenic mice and human Lewy body dementia
Authors: Morris Meaghan , Sanchez Pascal E. , Verret Laure , Beagle Alexander J. , Guo Weikun , Dubal Dena , Ranasinghe Kamalini G. , Koyama Akihiko , Ho Kaitlyn , Yu Gui‐Qiu , Vossel Keith A. , Mucke Lennart
Published: October 2015

Objective

Dementia with Lewy bodies (DLB) is associated with the accumulation of wild‐type human α‐synuclein (SYN) in neurons and with prominent slowing of brain oscillations on electroencephalography (EEG). However, it remains uncertain whether the EEG abnormalities are actually caused by SYN.

Methods

To determine whether SYN can cause neural network abnormalities, we performed EEG recordings and analyzed the expression of neuronal activity‐dependent gene products in SYN transgenic mice. We also carried out comparative analyses in humans with DLB.

Results

We demonstrate that neuronal expression of SYN in transgenic mice causes a left shift in spectral power that closely resembles the EEG slowing observed in DLB patients. Surprisingly, SYN mice also had seizures and showed molecular hippocampal alterations indicative of aberrant network excitability, including calbindin depletion in the dentate gyrus. In postmortem brain tissues from DLB patients, we found reduced levels of calbindin mRNA in the dentate gyrus. Furthermore, nearly one quarter of DLB patients showed myoclonus, a clinical sign of aberrant network excitability that was associated with an earlier age of onset of cognitive impairments. In SYN mice, partial suppression of epileptiform activity did not alter their shift in spectral power. Furthermore, epileptiform activity in human amyloid precursor protein transgenic mice was not associated with a left shift in spectral power.

Interpretation

We conclude that neuronal accumulation of SYN slows brain oscillations and, in parallel, causes aberrant network excitability that can escalate into seizure activity. The potential role of aberrant network excitability in DLB merits further investigation.
Microwave Radar Absorbing Properties of Multiwalled Carbon Nanotubes Polymer Composites: A Review
Authors: Munir Arshad
Published: October 2015

Multiwall carbon nanotubes (MWCNTs) reinforced composites for electromagnetic (EM) absorption are reviewed. Here, four types of nanostructured radar absorbing materials (RAMs) were discussed including MWCNTs polymer composites, magnetic nanostructures decorated MWCNTs polymer composites, nonmagnetic nanostructures decorated MWCNTs polymer composites, and honeycomb‐coated MWCNTs as RAMs. Challenges hindering the practical applications of such composites have been discussed. It has also been highlighted that MWCNTs decorated with magnetic and dielectric nanostructures are effective for broadband lightweight absorbing materials.