bluuebunny/crossref_metadata_2025 huggingface dataset:
Jackson-Stechkin Inequality and Values of Widths of Some Classes of Functions in $L_2$
Authors:   Tajik National University, Dushanbe, Tajikistan, Shabozov M. Sh. , Palavonov K.K. ,   Tajik State University of Commerce, Dushanbe, Tajikistan
Published: July 2022

The sharp values of extremal characteristic of special form for classes $L_{2}^{(r)}$, $(r\in\mathbb{Z}_{+})$ containing not only averaged module of continuity but also the averaged with weight $u(t-u)/t$, $0\le u\le t$ of given modulus continuity is calculated. The obtained result is the spreading of well-known S. B. Vakarchuk theorem about averaged module of continuity. For the given characteristic of smoothness, is given an application for the solution of one extremal problem and the values of $n$-widths for some classes of functions in $L_2$ is calculated.
Pasado, presencia e historicidad. La aporía de la historiografía contemporánea.
Authors: Pérez Morales Enrique
Published: July 2022

La manera en que se practica la historiografía en la modernidad, esto es, la historia científica, instaura una relación ambigua con el pasado. Dicha ambigüedad toma la forma de una aporía: al mismo tiempo que la historiografía moderna va construyendo una conciencia histórica más acabada, también va revelando la condición histórica de todo saber, incluido el suyo. Así, mientras la historiografía científica abre el tema de la historicidad, sus aspiraciones epistemológicas, paradójicamente, la llevan a concebir al pasado como un puro campo de objetividad exterior que cuenta con una identidad estable e inmutable fuera de toda determinación sociohistórica. Dicho de otra manera, el afán por parte de la historiografía científica de buscar un fundamento que permita aprehender y conocer inequívocamente aquello que llama con avidez la “realidad histórica”, sólo puede ser posible a costa de excluir su propia historicidad.
Los montajes históricos de la mirada moderna y la aparición del hombre como objeto de saber.
Authors: Contreras Gallegos Luis Fernando
Published: July 2022

Resumen

El objetivo de este trabajo consiste en recuperar algunos de los aportes de Michel Foucault y Michel De Certeau sobre uno de los temas de interés que compartieron: la mirada moderna y la aparición del hombre como objeto de saber. El aporte de este artículo consiste en desarrollar la hipotesis de que no hubo una discontinuidad absoluta en la aparición de esta mirada moderna. Por el contrario, es una discontinuidad dispersa en diferentes procesos que hay que poner en relación. De esta manera, nuestra hipotesis consiste en que la mirada moderna y la aparición del hombre como objeto de saber solamente puede ser dimensionada al ser relacionada con tres procesos: 1. Las luchas contra el misticismo a partir del siglo XVI; 2. Una moderna experiencia de la locura; 3. La experiencia moderna de la muerte y la finitud.
En papel el mundo es otro: historias globales del Renacimiento
Authors: León Treviño Paulina
Published: July 2022

Reseña crítica de Giuseppe Marcocci. The Globe on Paper. Writing Histories of the World in Renaissance Europe and the Americas. Trans. Richard Bates. Oxford: Oxford University Press, 2020.
Pursuit of Privacy in the IoT Domain
Authors: Lekha Mangesh Naik
Published: July 2022

The massive web of linked devices and people i.e. “The Internet of Things” (IoT) has become an inevitable segment of all demographics in today’s era. With current revolutions in “Industry 4.0”, the world is predicted to cater to 64 billion IoT devices by 2025. While consumers relish the “smart of everything” offered in the market, their privacy concerns remain an issue of critical importance. “Online Privacy” of an individual has been a debated matter of interest since the advancements in social media, and with the prevailing developments in the IoT sector for making consumers lifestyle effortless, the volume and variety of personal data gathered is humongous. This collected data of consumers if leaked or used in an unethical manner by businesses can result in privacy threats. This paper addresses various threats and repercussions to consumers that exist through the applications and devices of the IoT world. Further, the paper analyses whether the consumers are well-aware about how their information is being recorded and the extent to which their personal data is shared by them to the businesses and the consequences that can arise to their data. The paper ends with solutions in favour of these consumers to ensure that they are well acquainted with the privacy policies and threats that abide with these devices they use.
Pomegranate Fruit Disease Detection Based on Machine Learning
Authors: Mr. P. B. Wakhare  , Yugal Jagtap  , Vivek Gaikwad  , Gaurav Shinde  , Vijay Shastri
Published: July 2022

This project presents the recent development in automatic vision-based technology. Use of this technology is increasing in agriculture and fruit industry. An automatic fruit quality detection system for sorting and grading of fruits and defected fruit detection discussed here. The main aim of this system is to replace the manual inspection system. This helps in speed up the process improve accuracy and efficiency and reduce time. This system collect image from camera which is placed on conveyor belt. Then image processing is done to get required features of fruits such as color and size. Defected fruit is detected based on image pixels. Sorting is done based on color and size.
Man Machine Interaction in Autonomous Vehicles - 02
Authors: Mr. Ajaypratap Shivbahadur Singh  , Ms. Neha Sudhirkumar Agarwal  , Ms. Kanak Narawade  , Mr. Gaurav Deshmukh  , Prof. Shikha Pachouly
Published: July 2022

Today, and possibly for a long time in the near future, the complete driving task is too complex an activity to be fully formalized as a sensing-acting robotics system that can be explicitly solved using model-based and learning-based approaches in order to achieve fully unconstrained vehicle autonomy. This is especially true for unconstrained, real-time operations where the permissible range of error is extremely small and the number of limiting cases is extremely large. Until these problems are solved, human beings will remain an inevitable part of the driving task, monitoring the AI system as it performs anywhere from 0 to just under 100 percent of the driving. Overtaking and lane-changing is a critical part of vehicle automation. Though automation in automobiles has increased security and decreased environmental issues, it causes driver to be less active generating passive fatigue. This passive fatigue can lead to failure in responding quickly if needed. This led automation to keep driver active even though he/she is not required to take up full control all the time. This paper presents the need for alerting the driver during overtaking and lane-changing to avoid accidents and disastrous outcomes. The model uses image processing for lane detection and identification of obstacles, vehicles, and lane tracking. It calculates the relative velocity during overtaking and the system will share the scenarios with the driver, using alert systems. We demonstrate the capabilities and features of our system through real-world experiments using four vehicle’s videos processed on the road.
IOT Based Smart Baby Monitoring System with Live Streaming and Alert Notification
Authors: Jeevan H D  , Sandhya R
Published: July 2022

This paper is mainly focused on both parent and child as parents can moniter their babies in their busy life or busy schedule. Since most people These days are more people too busy to care for or spend time with their newborns, this project will enable parents to watch over their child using a mobile or web cameras and a system or sensors(Moisture sensor, Temperature and Humidity sensor, Gas sensor, Motion sensor) that is connected to it. He may take care of the infant in the cradle safely thanks to this project. In today's environment, parents must simultaneously manage their home and their professional obligations. Therefore, some parents choose to send their child to a day care facility or to the house of their elders. However, under both regular and extraordinary circumstances, parents are unable to continually check their child's health. This route will go into depth over every little thing required for the protection of the infant inside the cradle. As a result, a live streaming Internet of Things-based baby monitoring system is ready for parents to use to keep an eye on their infants in real time.
Comparación de los resultados funcionales post operatorios en enucleación prostática con láser holmio, fotovaporización prostática con láser verde y resección transuretral de próstata en el tratamiento de la hiperplasia prostática obstructiva
Authors: Cruz-Ordoñez Sandra Xochiquetzal , Chein-Vázquez María Fernanda , Victorio-Vargas Omar Dimas , Cervantes-Palma César , Lemus-Hernández Luis Alberto , Toledo-Díaz Mario Alberto , Torres-Gómez Jesús Javier , Bravo-Castro Edgar Iván , Díaz-Gómez Cristóbal , Martínez-Alonso Iván Azael , Campos-Salcedo José Gadú
Published: July 2022

Objective: To compare the functional results in patients undergoing transurethral resection of the prostate (TURP), photovaporization of the prostate with GreenLight ® laser (FTV) and prostate enucleation with Holmium laser (HOLEP), for the treatment of benign prostatic obstruction at the Central Military Hospital.
Material and methods: The international index of prostate symptomatology questionnaire (IPSS), Uroflowmetry (Qmax), pre and post void ultrasonography (PVR) were applied to patients undergoing TURP, VTF and HOLEP pre and postoperatory from January 2018 to March 2019. Shapiro-Wilks tests were analyzed for quantitative variables; parametric behavioral data were analyzed with ANOVA tests, and non-parametric data were analyzed with Mann-Whitney and Kruskal-Wallis U tests. GraphPad PRISM v7.0 statistical package was used.
Results: 46 patients underwent to TURP, 62 to HOLEP and 17 to VFT were evaluated, removing those who did not achieve complete postoperative follow-up; describing the demographic characteristics, the most frequent comorbidities and the parameters evaluated preoperatively. At follow-up, HOLEP was slightly better than FTV or TURP; without finding statistical significance between the groups, observing an important improvement in the reference values of IPSS, Qmax and PVR after surgery in all populations.
Conclusions: No superiority of any technique was proven in short-term postoperative functional results, so we propose to perform long-term studies, considering adding trans and postoperative parameters in order to demonstrate superiority of these techniques.
Litiasis ureteral bilateral en un paciente con hiperparatiroidismo primario
Authors: Campos-Márquez Guillermo Patricio , Téllez-Arce Gilberto , Rodríguez-Rivera José Arturo , García-González Edgar Alonso , Cabeza-Bucio Eduardo , Farias-Cortés Juan Diego
Published: July 2022

Description of the clinical case: A 62-year-old female comes to our unit with oppressive pain in the bilateral lumbar area. Bilateral ureteral lithiasis was diagnosed those conditions severe bilateral hydronephrosis and it was decided to divert the urinary tract to later perform a definitive treatment. Due to the findings in the laboratory and cabinet studies, primary hyperparathyroidism was diagnosed as the cause of the bilateral ureteral lithiasis.
 
Relevance: The presence of stones indicates the need for parathyroidectomy in patients diagnosed with primary hyperparathyroidism with hypercalcemia or normocalcemia unless there are contraindications. Patients with nephrolithiasis should explore strategies to prevent stone formation even after parathyroidectomy.
 
Clinical implications: The most common consequences of excessive parathyroid hormone secretion are hypercalciuria and kidney stones. They occur in 8-20% of patients with primary hyperparathyroidism and are the most common complication of the disease. They can be silent in 7-11% and bilateral in 16.4% of patients. It is very important to be able to identify patients with this disease to avoid multiple complications.
 
Conclusions: Patients with primary hyperparathyroidism have a high risk of developing kidney complications. We must analyze all the factors that made us suspect in a primary hyperparathyroidism in patients who debut with renal or ureteral stones and thus avoid the recurrence of the same
Evaluación del rendimiento de la Tabla de Partin (2007), en una muestra ecuatoriana actual
Authors: Martínez-Calderón Maryangel Nickol , Oviedo-Rivera Givanna Brigitte , Serrano-Olmedo Stefania del Cisne , Beltrán-Sánchez Mayra Janneth , González-Córdova María Paz
Published: July 2022

Background: Partin tables made from a 2007 cohort in a North American population are regularly used to predict the extent of prostate cancer after radical prostatectomy. There is no study that evaluated this table in the Ecuadorian population. Objective: To determine the usefulness in the prediction made by Partin tables in Ecuadorian patients with prostate cancer who underwent radical prostatectomy.
Materials and methods: A descriptive, cross-sectional, quantitative and retrospective study was designed, the latter being its limitation. The records of 119 patients with prostate cancer who underwent radical prostatectomy during the period from 2010 to 2020 were reviewed. The area under the curve (AUC) was calculated using the ROC curve, and the result for extraprostatic extension (EEP) was compared. , infiltration of seminal vesicles (IVS) and lymph nodes (INL) with the Partin 2007 cohort.
Results: The ROC curve for EEP showed an AUC 0.54 (0.43-0.65), for ISV 0.60 (0.44-0-76) with low sensitivity and specificity, while for INL an AUC of 0.73 (0.59-0.86) with acceptable sensitivity but low specificity.
Conclusions: Partin Tables did not predict pathological stages for EPP and ISV; however, for INL it can be used with caution.
Rol de la laparoscopía en el tratamiento de la hiperplasia prostática benigna: experiencia LATAM
Authors: Silva-Araujo Helen Daiana , Barreto-Gutiérrez Mariana , Flores-Fernández Olga Carolina , Rodríguez-Fernández Miriam Virginia
Published: July 2022

Objectives: research what is the actual role of the laparoscopic approach in the treatment of benign prostatic hyperplasia, in daily practice of Latin American urologists.
Materials and methods: an online survey was conducted during the period June - September 202, send to all members of the Confederación Americana de Urología, through its official networks.
Results: laparoscopic adenomectomy is not the preferred approach for the treatment of prostates larger than 100g (4% vs 76% for open adenomectomy), most respondents never performed this technique (76%), however, urologists recognize that the laparoscopic approach has benefits over the open approach (64%).
Conclusions: although the laparoscopic approach has shown clear benefits in terms of surgical morbidity compared to the open approach, for most Latin American urologists, the technique has not yet been implemented in routine daily practice, being an unknown technique for most of respondents.
40 anos do Simpósio Nacional de Educação Física
Authors: Afonso Mariângela da Rosa , Bicca Ribeiro José Antonio , Azambuja dos Santos Roberta Santos , Kazimoto Alves Deborah , Woziak Tavares Fernanda
Published: July 2022

O texto objetivou resgatar as memórias do Simpósio Nacional de Educação Física a partir dos trabalhos apresentados no evento. Realizou-se uma análise documental dos anais das edições de 1980 a 2021, a partir de: a) análise dos títulos, palavras-chave e resumos; b) análise do trabalho na íntegra, verificando a abordagem do conteúdo e categorização final a partir das áreas temáticas de conhecimento (ATC) estabelecidas. Cada resumo passou pela análise de dois pesquisadores adotando critérios de elegibilidade. O mapeamento das ATC foi baseado em temáticas delimitadas nos grupos temáticos do Colégio Brasileiro de Ciências do Esporte. Assim foram elencadas seis ATC: Atividade motora, Saúde e desempenho; Escola; Currículo e formação docente; Lazer e políticas públicas; Memória, esporte e cultura; Inclusão e deficiência. A ESEF-UFPel alcançou um patamar diferenciado, no ensino de graduação e Pós-Graduação e a pluralidade de formação dos docentes, contribuiu significativamente para ser uma referência no cenário nacional.
A Educação Física cultural em tempos de isolamento social
Authors: Garcia Neira Marcos , Pereira de Souza Raquel Aline
Published: July 2022

O artigo investiga as possibilidades da Educação Física cultural durante o período de isolamento social em que grande parte das escolas brasileiras adotaram o chamado ensino remoto emergencial como alternativa para manutenção das atividades didáticas. Para tanto, foram entrevistadas quatro professoras que afirmaram colocar a proposta em ação entre março de 2020 e agosto de 2021. Após confrontar a transcrição das gravações com a teoria curricular em questão, os resultados indicam que o ensino remoto emergencial não impediu o agenciamento das docentes pelos princípios ético-políticos nem dificultou o desenvolvimento das situações didáticas que caracterizam a vertente. O maior empecilho consistiu na restrição de acesso à internet por parte das crianças que frequentam a escola pública, o que levou à criação de alternativas e diversificação das ferramentas virtuais.
Negacionismo endógeno no jogo acadêmico da Educação Física
Authors: Branco Fraga Alex
Published: July 2022

Neste ensaio, desenvolvo o conceito de negacionismo endógeno, um tipo específico de negacionismo científico cultivado dentro do campo acadêmico, que busca deslegitimar pesquisas qualitativas das Humanidades. O texto tem três seções. Na primeira, trato das características do negacionismo vulgar a partir de breve retrospectiva histórica, e destaco as táticas de supressão de termos científicos em prol do controle da narrativa política. Na segunda, discuto casos de fraude acadêmica praticadas contra revistas das Ciências Sociais e Humanas como estratégia intencional de desacreditação da área, e analiso a abjeção ao termo “práticas corporais” como um rastro do negacionismo endógeno no léxico da Educação Física. Na terceira, reflito sobre a relevância da formação editorial em programas de pós-graduação no combate a preconceitos entre áreas do conhecimento. Em conclusão, defendo a desconstrução da retórica da ignorância, mola propulsora de negacionismos de toda ordem, como forma de preservação da pluralidade epistêmica na Educação Física.
O profissional Fisioterapeuta, a pandemia e os ecos futuros
Authors: Dias Ferreira Gustavo , De Lima Oppelt Lorena , Silva da Silveira Mariana , Tavares Barbosa Mauricio , Piazza Luza Lisiane , Marques Sosa Priscila , Bueno Orcy Rafael , Vinholes Siqueira Fernando Carlos
Published: July 2022

Este artigo é resultado do “I Encontro da Fisioterapia da UFPel”, que ocorreu junto ao tradicional Simpósio Nacional de Educação Física da Universidade Federal de Pelotas, e tem o objetivo de apresentar experiências vividas por profissionais fisioterapeutas sobre o momento pandêmico, o cenário apresentado, as dificuldades enfrentadas e os aprendizados. Foi relatada a experiência de profissionais que atuaram durante a pandemia nas áreas de terapia intensiva, unidade de tratamento intensivo neonatal e na clínica, após a alta hospitalar. Identificamos que as experiências vivenciadas na atuação do profissional fisioterapeuta foi marcada pela adaptação ao novo cenário e pelo enfrentamento de diferentes situações com protagonismo, o que possibilitou mostrar o quanto esses profissionais estão prontos para agir, junto aos demais membros da equipe de saúde, nas diversas situações em saúde que podem se apresentar.
İnternet Bağımlılığı Eleştirel Düşünme Eğilimini Etkiler mi
Authors: ÇAĞLI Abdulkadir
Published: July 2022

Bu çalışmada lise öğrencilerinin internet bağımlılığı düzeylerinin eleştirel düşünme eğilimlerine etkisinin betimlenmesi amaçlanmıştır. Nicel araştırma yöntemlerinden ilişkisel tarama modelinin kullanılan bu araştırmada örneklem olarak Ankara ili Mamak ilçesinde resmi devlet okulu statüsündeki liselerde öğrenim gören 312’ si kız 193’ ü erkek olmak üzere toplam 505 lise öğrencileri oluşturmaktadır. Lise öğrencileri hakkında bilgi toplamak amacıyla kişisel bilgi formu kullanılmıştır. Araştırmanın değişkenlerinden biri olan internet bağımlılığını ölçmek için, ''İnternet Bağımlılığı Ölçeği'', araştırmanın diğer değişkeni olan eleştirel düşünme eğilimini ölçmek için de ''Eleştirel Düşünme Eğilimi Ölçeği' kullanılmıştır. Veriler, analiz yapılmadan önce SPSS 24.0 programında normallik dağılımları test edilmiştir. Ardından çalışma kapsamında betimsel istatistiksel analizler, korelasyon analizi, bağımsız örneklemler t-testi ile ANOVA kullanılmıştır. Araştırma sonucunda göre lise öğrencilerinin eleştirel düşünme eğilimleri ile internet bağımlılık düzeyleri arasında negatif yönde ve anlamlı bir farklılık tespit edilmiştir (r=-.268, p<.05). Alt boyutlarda internet bağımlılığına cinsiyet, sosyoekonomik düzey, ebeveyn eğitim düzeyi ve sınıf düzeyinin anlamlı bir etkisinin olmadığı bulunmuştur. Eleştirel düşünme eğiliminde ise cinsiyet, kızların lehine anlamlı bir şekilde yüksek çıkarken sosyoekonomik düzey, ebeveyn eğitim düzeyi ve sınıf düzeyi açısından anlamlı bir farklılığa rastlanılmamıştır.
ANEMIA FERROPRIVA NA POPULAÇÃO GERIÁTRICA: PREVALÊNCIA E PRINCIPAIS FATORES ASSOCIADOS
Authors: Trévia Giovanna Helena De Oliveira , Linhares Giovanna Walfredo De Carvalho , Romero Silva Ricardo Espíndola
Published: July 2022

Introdução: O senil apresenta uma série de alterações e disfunções nos seus sistemas orgânicos, seja devido ao declínio de suas capacidades físicas e funcionais, seja devido a mudanças no padrão de vida. Tais fatores decorrentes do envelhecimento favorecem o desenvolvimento de anemia na população idosa, sendo esta caracterizada pela concentração de hemoglobina menor que 13 g/dL na mulher e 14 g/dL no homem. A anemia em idosos está relacionada ao aumento da morbilidade, mortalidade e à diminuição da qualidade de vida, mesmo quando o nível de hemoglobina sofre leves diminuições. A maioria dos casos ocorre pela deficiência de ferro, decorrente de dieta ou absorção inadequada do mineral, na maioria das vezes, causada devido a hemorragia gastrointestinal crônica, de falhas no metabolismo ou de perda sanguínea. Objetivo: Analisar a apresentação da anemia ferropriva em idosos e suas características. Método: Foi realizada uma revisão de literatura pela análise de 5 artigos publicados entre 2018 e 2021, nas línguas portuguesa e inglesa obtidos através das bases de dados SciELO e Pubmed. Os descritores pesquisados estão de acordo com o Sistema de Descritores em Ciências da Saúde (DeCS) e são respectivamente “Idosos” e “Anemia Ferropriva”. Resultados: Segundo a literatura estudada, a anemia ferropriva é o acometimento hematológico mais comum em idosos. Os artigos teceram discrepâncias em relação à estimativa de risco em idosos de 80 anos ou mais em comparação aos mais novos. É sabido que a população geriátrica é propensa à anemia, visto que os senis fisiologicamente apresentam valores limítrofes de hemoglobina para diagnóstico, mesmo quando sadios. Contudo, fatores socioeconômicos também comprometem a balança de ferro, como entraves de caráter financeiro, emocional, farmacológico, bem como a monotonia alimentar em casos de idosos hospitalizados e institucionalizados, entre outros. Ademais, desencadeadores como gastrite, hemorragias e antiácidos também acarretam carência de ferro em idosos. Conclusão: Assim, foi possível visualizar nas referências que tanto a idade, quanto variáveis socioeconômicas moldam o cenário anêmico enfrentado pelos idosos, reforçando a importância de uma visão integrada, multidisciplinar e humanizada no cuidado deles.
INCLUSÕES ERITROCITÁRIAS NA ANEMIA SIDEROBLÁSTICA
Authors: Santos Victória Regina dos , Pereira Paula Beatriz , Santos Joice Rodrigues dos
Published: July 2022

Introdução: As anemias sideroblásticas são um grupo de anemias reconhecidas pelo distúrbio na formação do grupo heme, no qual pode ocorrer devido a deficiências enzimáticas nas células da série vermelha ou defeitos nas mitocôndrias. Na visão clínica da doença, é comum a aparição de inclusões eritrocitárias como sideroblastos em anel e os corpos de Pappenheimer, que são acúmulos de ferro presentes na mitocôndria das células que são visíveis a coloração azul da Prússia. Objetivo: Este resumo pretende decorrer sobre a anemia sideroblástica e como algumas de sua aparições clínicas são importantes para obter um diagnóstico adequado através do conhecimento específico teórico. Metodologia: Foram utilizadas pesquisas na literatura referentes ao tema central e artigos científicos na base de dados PubMed e SciELO entre os anos 2003 a 2017. Os critérios estabelecidos destinam-se a seleção de informações que contemplam o assunto com detalhes e façam uma junção dos conhecimentos. Resultados: Foi observado que as inclusões eritrocitárias são dadas como exemplo nos exames de anemias sideroblásticas. Mesmo que estas apareçam em outras anemias, pode-se dizer que, os sideroblastos (eritrócitos com grânulos que contém ferro encontrados na medula óssea) e os siderócitos (eritrócitos com grânulos de ferro encontrados no sangue periférico) são um dos indicativos da presença desta doença. Estes sideroblastos e siderócitos podem aparecer também nas síndromes mielodisplásicas, talassemias, intoxicação por chumbo e pós-esplenectomia, entretanto, o que se discerne para especificamente a anemia sideroblástica é a aparição de hipocromia e nível ferro sérico alto. Conclusão: O déficit na síntese do grupo heme acarreta prejuízo a hemoglobina e o acúmulo de ferro na mitocôndria, caracterizando as inclusões. Este excesso de ferro nas mitocôndrias faz com que este grupo de anemias seja mais específica por apresentar nível de ferro sérico alto, sendo assim as inclusões são relevantes para um diagnóstico preciso e não devem ser descartadas no momento do laudo, pois essas favorecem para que haja uma abordagem mais seletiva dentre os outros tipos de anemias.
Retroalimentación formativa online bilingüe en el desarrollo del pensamiento crítico en estudiantes universitarios originarios
Authors: Huamán-De-La-Cruz Alejandro Máximo
Published: July 2022

La formación profesional en el ámbito universitario, requiere de un adecuado tratamiento pedagógico de la retroalimentación formativa online bilingüe; el cual, incide en el desarrollo significativo del pensamiento crítico de los estudiantes; por tal motivo, se ha formulado el siguiente objetivo general: explicar la influencia de la retroalimentación formativa online bilingüe en el desarrollo del pensamiento crítico en estudiantes universitarios originarios. El enfoque de investigación fue cuantitativo, tipo básico, diseño no experimental - transversal (correlacional causal); la muestra de estudio estuvo compuesto por 30 estudiantes universitarios bilingües, elegido probabilísticamente. Se aplicó el cuestionario vía google meet para la recolección de la información. Los resultados muestran que, el 66,7% de los estudiantes a veces recibió retroalimentación formativa online bilingüe de parte del docente que les enseña; siendo así, a veces, el 56,7% de los estudiantes, ha recibido retroalimentación descriptiva; el 63,3% retroalimentación por descubrimiento o reflexiva y el 50,0% retroalimentación valorativa; como consecuencia de ello, el 63,3% de los estudiantes ha desarrollado una capacidad de pensamiento crítico de alto nivel. Por cuanto, se llegó a concluir que: Existe una relación lineal estadísticamente significativa, moderada y directamente proporcional, entre la retroalimentación formativa online bilingüe y el desarrollo del pensamiento crítico en estudiantes universitarios. ( = 0.558, p = 0,001 < 0.05).
HOẠT TÍNH CHỐNG OXI HÓA, CHỐNG UNG THƯ TỪ CÂY SÂM CAU (CURCULIGO ORCHIOIDES) THU HÁI TẠI HUYỆN SƠN DƯƠNG, TUYÊN QUANG
Authors: Trần Đức Đại , Đỗ Công Ba , Tống Văn Trường , Nguyễn Thị Nguyệt , Ngô Thanh Huyền , Dương Thị Diễm Quỳnh , Trần Thanh Hoài , Lương Thị Thùy Dương , Phathongin Mena
Published: July 2022

Cây sâm cau (Curculigo orchioides Gaertn) thuộc họ Hạ trâm (Hypoxidaceae) Curculigoosystemoides Gaertn. (Hypoxidaceae) là cây thân thảo sống lâu năm, thân rễ hình trụ dài. Thân rễ của loại cây này có nhiều dược tính cũng như các tính chất khác như: giải nhiệt, lợi tiểu, kích thích tình dục, bổ trĩ, trị trĩ, tiêu viêm, lở ngứa, chữa bệnh ngoài da, hen suyễn, viêm phế quản, vàng da, ung thư, làm lành vết thương do tiêu chảy …Thử hoạt tính chống oxi hóa bằng các phương pháp loại bỏ các gốc tự do tạo bởi 1,1-diphenyl-2-picrylhydrazyl (DPPH), phương pháp gây độc và ức chế sự tăng sinh tế bào MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] kết quả cho thấy: Cao etyl axetat (SC.E), cao tổng (SC), cao ethanol - Nước (SCM) biểu hiện hoạt tính chống oxi hóa với giá trị SC50 lần lượt là 38,05 µg/ml, 48,03 µg/ml, 94,04 µg/ml. Mẫu SC, SC.E biểu hiện hoạt đối với dòng tế bào ung thư Hep - G2 với giá trị IC50 lần lượt là 37,2 μg/ml và  18,9 μg/ml. Các mẫu còn lại hoạt tính yếu hoặc không có hoạt tính.
¿Qué es el ser humano? Pregunta fundamental para dar direccionalidad a la educación en la contemporaneidad
Authors: Valera Alfonso Orlando , Pérez Zaballa Leonor
Published: July 2022

El presente artículo de reflexión y sistematización teórica tiene por objetivo ofrecer elementos para la compresión del ser humano desde un enfoque multilateral, necesario para su abordaje científico y responder a la infinidad de problemas que afronta la humanidad en la contemporaneidad.
En las siguientes líneas se revisan algunas de las principales concepciones acerca de lo humano y las propuestas metodológicas para su abordaje, con el fin de proponer una representación filosófica de valor teóricopráctico fundamentada en la dialéctica.
Se concluye que son necesarios un enfoque holístico y sistematizador y una actitud crítica que confluyan en la historia de la respuesta al problema que se plantea en la pregunta formulada, con la lógica de su investigación en la actual etapa del mundo globalizado y la sociedad de la inteligencia.
Quizás esta sea la pregunta más universal que desde que surgió la cultura humana se ha formulado en el tiempo, y que tiene el espectro más amplio de respuestas, siempre incompletas e insatisfactorias.
Tres aspectos significativos de la pandemia y el confinamiento para tener en cuenta más allá del inmediatismo
Authors: Ramírez Angarita Claudio
Published: July 2022

A unos meses de haberse levantado la cuarentena global, parece que el tema de la pandemia y sus tangibles consecuencias ha sido tratado como una moda, como un asunto de solo actualización. Existe un descuido del mensaje que sigue arrojando la pandemia, y este puede leerse en claves sanitarias, políticas, sociales, culturales y, sobre todo, ambientales. Aquí nada queda por fuera. Todo ha de relacionarse con la dimensión educativa del ser humano y esa institución que este ha creado para enfrentar la realidad mundana, su comprensión del medio y la construcción de su entorno. Tampoco puede descuidarse el ámbito administrativo; todo lo contrario. El desafío de la escuela suele limitarse –en tiempos de pandemia y confinamiento– a la “afrontación” de la conectividad, la espera de dictámenes sobre alternancia, la búsqueda de flexibilidad y solamente a los ajustes en temas de planes de estudio, entre otros. Quedan por fuera la exigencia de una política gerencial comprometida con la realidad y vivida y su proyección a futuro que se relega a labores de “ordenación” y se sujeta a los mínimos que consigna la ley; es así como se olvida la verdadera misión social del acto administrativo que deben tener los sujetos investidos para cumplir tan importante labor.
Lo que trajo el covid-19 y lo que dejó
Authors: Rincón Rueda Alberto Isaac
Published: July 2022

El virus, científicamente denominado covid-19, cambió la vida de las personas y del mundo por la amenaza de muerte que encarnó. El miedo que acarreó consigo llevó al encierro y al aislamiento de la gente en la mayor parte del mundo, paró la economía, detuvo la explotación de la naturaleza y los animales pudieron salir, y la tierra tuvo un respiro en el abuso y deterioro que causa diariamente el ser humano a su entorno.
La urgencia está, por el momento, enfocada en cómo detener la expansión del covid-19. Lograr esa detención está centrada en el desarrollo y la aplicación de una vacuna a toda la población del planeta, pero hay problemas para la implementación de dicho plan. En el caso de Colombia, los problemas giran, especialmente, en torno a la dificultad para la liberación de las patentes por las grandes farmacéuticas y a la incapacidad para la fabricación de las vacunas en el país.
The impact of sampling strategy on the cloud droplet number concentration estimated from satellite data
Authors: Gryspeerdt Edward , McCoy Daniel T. , Crosbie Ewan , Moore Richard H. , Nott Graeme J. , Painemal David , Small-Griswold Jennifer , Sorooshian Armin , Ziemba Luke
Published: July 2022

Abstract. Cloud droplet number concentration (Nd) is of central importance to observation-based estimates of aerosol indirect effects, being used to quantify both the cloud sensitivity to aerosol and the base state of the cloud. However, the derivation of Nd from satellite data depends on a number of assumptions about the cloud and the accuracy of the retrievals of the cloud properties from which it is derived, making it prone to systematic biases. A number of sampling strategies have been proposed to address these biases by selecting the most accurate Nd retrievals in the satellite data. This work compares the impact of these strategies on the accuracy of the satellite retrieved Nd, using a selection of in situ measurements. In stratocumulus regions, the MODIS Nd retrieval is able to achieve a high precision (r2 of 0.5–0.8). This is lower in other cloud regimes but can be increased by appropriate sampling choices. Although the Nd sampling can have significant effects on the Nd climatology, it produces only a 20 % variation in the implied radiative forcing from aerosol–cloud interactions, with the choice of aerosol proxy driving the overall uncertainty. The results are summarised into recommendations for using MODIS Nd products and appropriate sampling.
Organic matter transformations are disconnected between surface water and the hyporheic zone
Authors: Stegen James C. , Fansler Sarah J. , Tfaily Malak M. , Garayburu-Caruso Vanessa A. , Goldman Amy E. , Danczak Robert E. , Chu Rosalie K. , Renteria Lupita , Tagestad Jerry , Toyoda Jason
Published: July 2022

Abstract. Biochemical transformations of organic matter (OM) are a primary driver of river corridor biogeochemistry, thereby modulating ecosystem processes at
local to global scales. OM transformations are driven by diverse biotic and abiotic processes, but we lack knowledge of how the diversity of those
processes varies across river corridors and across surface and subsurface components of river corridors. To fill this gap we quantified the number
of putative biotic and abiotic transformations of organic molecules across diverse river corridors using ultra-high-resolution mass
spectrometry. The number of unique transformations is used here as a proxy for the diversity of biochemical processes underlying observed profiles
of organic molecules. For this, we use public data spanning the contiguous United States (ConUS) from the Worldwide Hydrobiogeochemical Observation
Network for Dynamic River Systems (WHONDRS) consortium. Our results show that surface water OM had more biotic and abiotic transformations than OM
from shallow hyporheic zone sediments (1–3 cm depth). We observed substantially more biotic than abiotic transformations, and the numbers of biotic
and abiotic transformations were highly correlated with each other. We found no relationship between the number of transformations in surface water
and sediments and no meaningful relationships with latitude, longitude, or climate. We also found that the composition of transformations in
sediments was not linked with transformation composition in adjacent surface waters. We infer that OM transformations represented in surface water
are an integrated signal of diverse processes occurring throughout the upstream catchment. In contrast, OM transformations in sediments likely
reflect a narrower range of processes within the sampled volume. This indicates decoupling between the processes influencing surface water and
sediment OM, despite the potential for hydrologic exchange to homogenize OM. We infer that the processes influencing OM transformations and the
scales at which they operate diverge between surface water and sediments.
Evolution of squall line variability and error growth in an ensemble of LES
Authors: Groot Edward , Tost Holger
Published: July 2022

Abstract. Squall lines represent an organized form of atmospheric convection that link processes occurring at the small end of the mesoscale and processes ocurring at the large end of the mesoscale. This study analyses the initial condition sensitivity of idealized squall lines in an LES ensemble. The ensemble spread of the squall lines is evaluated using passive tracers, an ensemble sensitivity analysis, other statistical tools and an error growth metric. Analysing gravity wave dynamics, convective initiation, squall line relative motion and updraft/downdraft characteristics and transport, a chain of interacting processes is identified. From the convective point of view ensemble spread is rooted in a secondary phase of convective initiation (30–35 min) a few km ahead of the squall line. Contrasts in the amount secondary initiation arise within the ensemble, as vertical velocity varies at the location of convective initiation within the ensemble due to differences in gravity wave amplitude and phase. Immediately after the secondary phase of initiation (30–45 min), the cold pool accelerates to velocities of 2–4 m/s (ensemble envelope). With the spread in secondary convective initiation, upward mass transport is disturbed, which also affects downdraft mass fluxes. Furthermore, once accelerated (30–40 minutes), the cold pool nearly maintains its propagation speed in each ensemble member. It is shown that part of the errors occurring after 45–85 minutes are explained by the cold pool velocity and a correction for cold pool velocity removes a substantial fraction of the spread. A coherent anomaly of the circulation within the squall line, which is consistent with extra upward mass transport, exists during this phase of the evolution. It is proposed that the identified chain of interactions may be explained by a common mode of variability, which determines a substantial portion of the ensemble spread in the stage after 30–85 minutes in many diagnostics. Based on a non-monotonic relation between initial conditions and local vertical velocities that cause secondary initiation, one can argue that an intrinsic limit of predictability exists, as Melhauser and Zhang (2012) do.
OpenMRG: Open data from Microwave links, Radar, and Gauges for rainfall quantification in Gothenburg, Sweden
Authors: Andersson Jafet C. M. , Olsson Jonas , van de Beek Remco , Hansryd Jonas
Published: July 2022

Abstract. Accurate rainfall monitoring is critical for sustainable societies, and yet challenging in many ways. Opportunistic monitoring using commercial microwave links (CML) in telecommunication networks is emerging as a powerful complement to conventional gauges and weather radar. However, CML data are often inaccessible or incomplete, which limits research and application. Here, we aim to reduce this barrier by openly sharing data at 10-second resolution with true coordinates from a pilot study involving 364 bi-directional CMLs in Gothenburg, Sweden. To enable further comparative analyses, we also share high-resolution data from 11 precipitation gauges and the Swedish operational weather radar composite in the area. The article presents an overview of the data, including collection approach, descriptive statistics, and a case study of a high-intensity event. The results show that the data collection was very successful, providing near-complete time series for the CMLs (99.99 %), gauges (100 %) and radar (99.6 %) in the study period (June–August 2015). The bandwidth consumed during CML data collection was small, and hence the telecommunication traffic was not significantly affected by the collection. The gauge records indicate that total rainfall was approximately 260 mm in the study period, with rainfall occurring in 6 % of each 15-minute interval. One of the most intense events was observed on 28 July 2015, during which the Torslanda gauge recorded a peak of 1.1 mm min−1. The variability of the CML data generally followed the gauge dynamics very well. Here we illustrate this for 28 July, where a nearby CML recorded a drop in received signal strength of about 27 dB at the time of the peak. The radar data showed a good distribution of reflectivities for mostly stratiform precipitation, but also contained some values above 40 dBZ, which is commonly seen as an approximate threshold for convective precipitation. Clutter was also found and was mostly prevalent around low reflectivities of −15 dBZ. The data are accessible at https://doi.org/10.5281/zenodo.6673751 (Andersson et al., 2022). We believe this Open sharing of high-resolution data from Microwave links, Radar, and Gauges (OpenMRG) will facilitate research on microwave-based environmental monitoring using CMLs, and support the development of multi-sensor merging algorithms.
Isoprene and monoterpene simulations using the chemistry-climate model EMAC (v2.55) with interactive vegetation from LPJ-GUESS (v4.0)
Authors: Vella Ryan , Forrest Matthew , Lelieveld Jos , Tost Holger
Published: July 2022

Abstract. Earth system models (ESMs) integrate previously separate models of the ocean, atmosphere and vegetation in one comprehensive modelling system enabling the investigation of interactions between different components of the Earth system. Global isoprene and monoterpene emissions from terrestrial vegetation, which represents the most important source of VOCs in the Earth system, need to be included in global and regional chemical transport models given their major chemical impacts on the atmosphere. Due to the feedbacks of vegetation activity involving interactions with the weather and climate, a coupled modelling system between vegetation and atmospheric chemistry is a recommended tool to address the fate of biogenic volatile organic compounds (BVOCs). In this work, we present further development in linking LPJ-GUESS, a global dynamic vegetation model, to the atmospheric chemistry-enabled atmosphere-ocean general circulation model EMAC. We evaluate terrestrial BVOC emission estimates from the submodels ONEMIS and MEGAN in EMAC with (1) prescribed climatological vegetation boundary conditions at the land-atmosphere interface; and (2) dynamic vegetation states calculated in LPJ-GUESS (replacing the offline vegetation inputs). LPJ-GUESS-driven global emission estimates for isoprene and monoterpenes from the submodel ONEMIS were found to be 546 Tg yr-1 and 102 Tg yr-1, respectively. MEGAN prescribed 657 Tg and 55 Tg of isoprene and monoterpene emissions annually. We also evaluated the sensitivity of the new coupled system in doubling CO2 scenarios. This work provides evidence that the new coupled model yields suitable estimates for global BVOC emissions that are responsive to vegetation dynamics. We conclude that the proposed model setup is a useful tool for studying land-biosphere-atmosphere interactions in the Earth system.
A principal component based strategy for regionalisation of precipitation intensity-duration-frequency (IDF) statistics
Authors: Parding Kajsa Maria , Benestad Rasmus Emil , Dyrrdal Anita Verpe , Lutz Julia
Published: July 2022

Abstract. Intensity-duration-frequency (IDF) statistics describing extreme rainfall intensities in Norway were analysed with the purpose of investigating how the shape of the curves is influenced by geographical conditions and local climate characteristics. To this end, principal component analysis (PCA) was used to quantify salient information about the IDF curves and a Bayesian linear regression was used to study the dependency of the shapes on climatological and geographical information. Our analysis indicated that the shapes of IDF curves in Norway are influenced by both geographical conditions and 24-hr precipitation statistics. Based on this analysis, an empirical model was constructed to predict IDF curves in locations with insufficient sub-hourly rain gauge data and for the future using downscaled data from global climate models. Our new method was also compared with a recently proposed formula for estimating sub-daily rainfall intensity based on 24-hr rain gauge data. We found that a Bayesian inference of a PCA representation of IDF curves provides a promising strategy for estimating sub-daily return levels for rainfall.
Globally widespread and increasing violations of environmental flow envelopes
Authors: Virkki Vili , Alanärä Elina , Porkka Miina , Ahopelto Lauri , Gleeson Tom , Mohan Chinchu , Wang-Erlandsson Lan , Flörke Martina , Gerten Dieter , Gosling Simon N. , Hanasaki Naota , Müller Schmied Hannes , Wanders Niko , Kummu Matti
Published: July 2022

Abstract. Human actions and climate change have drastically altered
river flows across the world, resulting in adverse effects on riverine
ecosystems. Environmental flows (EFs) have emerged as a prominent tool for
safeguarding the riverine ecosystems, but at the global scale, the
assessment of EFs is associated with high uncertainty related to the
hydrological data and EF methods employed. Here, we present a novel,
in-depth global EF assessment using environmental flow envelopes (EFEs).
Sub-basin-specific EFEs are determined for approximately 4400 sub-basins at
a monthly time resolution, and their derivation considers the methodological
uncertainties related to global-scale EF studies. In addition to a lower
bound of discharge based on existing EF methods, we introduce an upper bound
of discharge in the EFE. This upper bound enables areas to be identified where
streamflow has substantially increased above natural levels. Further,
instead of only showing whether EFs are violated over a time period, we
quantify, for the first time, the frequency, severity, and trends of EFE
violations during the recent historical period. Discharge was derived from global hydrological model outputs from the ISIMIP
2b ensemble. We use pre-industrial (1801–1860) quasi-natural discharge
together with a suite of hydrological EF methods to estimate the EFEs. We
then compare the EFEs with recent historical (1976–2005) discharge to assess
the violations of the EFE. These violations most commonly manifest
as insufficient streamflow during the low-flow season, with fewer
violations during the intermediate-flow season, and only a few violations
during the high-flow season. The EFE violations are widespread and occur
in half of the sub-basins of the world during more than 5 % of the months
between 1976 and 2005, which is double compared with the pre-industrial
period. The trends in EFE violations have mainly been increasing, which will
likely continue in the future with the projected hydroclimatic changes and
increases in anthropogenic water use. Indications of increased upper extreme
streamflow through EFE upper bound violations are relatively scarce and
dispersed. Although local fine-tuning is necessary for practical
applications, and further research on the coupling between quantitative
discharge and riverine ecosystem responses at the global scale is required,
the EFEs provide a quick and globally robust way of determining
environmental flow allocations at the sub-basin scale to inform global
research and policies on water resources management.