bluuebunny/crossref_metadata_2025 huggingface dataset:
Costumes e caracteres na "Ética" de Pedro Abelardo
Authors: Chaves-Tannús Márcio
Published: November 2022

Resumo: Frente à impossibilidade de transpor, com um único vocábulo, ambos os significados da palavra latina "mores", os tradutores da "Ética" que consultei optaram todos por uma solução que, embora adequada à manutenção da coerência interna formal do texto e condizente com uma antiga tradição filosófica, é insuficiente para a exata reprodução do conteúdo original.
Palavras-chave: Pedro Abelardo; Ética; Filosofia.
MACEDO, Lino. Ensaios costrutivistas. São Paulo, Ed. Casa do psicólogo, 1994
Authors: Pagotti Antônio Wilson
Published: November 2022

É comum, em leituras sobre educação, encontrar-se reflexões a partir de perguntas como: "educar para quê?", "educar para quem?". As leituras colocam questionamentos históricos, políticos, ideológicos onde a concepção de luta de classes normalmente está presente. Nesta ótica processa-se uma dicotomia: de um lado as teorias educacionais críticas, de outro as teorias educacionais não críticas, como se fosse possível este nível de precisão conceituai e assim dividí-las "matematicamente". Sobre as teorias não críticas ressaltam-se o "pedagogismo", e o "psicologismo", dão-lhes a pecha de conservadoras ou, na melhor das hipóteses, refonnistas. Quanto às teorias críticas, ressalta-se o caráter revolucionário, porém pela contundência acabam não tendo um "mundo possível" para aplicação. Assim, sua importância circunscreve-se na possibilidade de refletir a realidade educacional. Isto porque a ênfase do processo crítico está principalmente no pensamento por oposição. Em alguns casos há autores que chegam a afirmar que a educação escolar é hoje e o que foi o cristianismo para o período medieval. O que é um exagero crítico. [...]
Palavras-chave: educação; construtivismo; política.
Delfim Santos e os temas culturais
Authors: De Carvalho José Maurício
Published: November 2022

Resumo: Nesse estudo examinamos os temas culturais considerados por Delfim Santos como porção significativa do ser do homem. Ele examinou a linguagem, a produção técnica, a consciência científica, os costumes, os valores, a educação, o conceito de filosofia, a história.
Palavras-chave: homem; cultura; espírito objetivo.
 
Résumé: Dans cette étude nous examinons les thémes culturels considérés par Delfim Santos comme parcelle significative de l'homme. 11 a examiné le langage, la production technique, la conscience scientifique, les valeurs, l'éducation, le concept de la philosophie, l'histoire.
Mots-clé: homme; culture; esprit objectif.
Extensão universitária:
Authors: Rodrigues Marilúcia de Menezes
Published: November 2022

Resumo: A análise da extensão universitária no Brasil só pode ser elucidada pelo processo político, econômico e cultural, inserido na conjuntura histórica. Significa desvendar a posição da extensão no campo educacional, de acordo com a estratégia política do Governo. A extensão constitui um fenômeno isolado, como também estão isolados os outros setores da sociedade. Objetiva-se tentar reuni-los, a fim de clarear a estrutura social que irá elucidar a educação com seus problemas reais e contidos neles a extensão.
Tentando esboçar um quadro que mostre uma articulação com o contexto histórico-concreto, isto é, de acordo com a forma com que a extensão vem se manifestando no seio da organização social, apresentamos as principais tendências ocorridas, esquematicamente. A periodização assume a seguinte configuração: até 1930, fase da economia agrária; de 1930 à 1964, fase de divulgação dos valores, ideais e concepção da nova ordem econômica- industrialização; período pós 64-68, prestação de serviços assistenciais: pós 68 e anos 80, fase da autonomia e democratização - o capital estrangeiro; 1987, criação do Fórum de Pró-Reitores de Extensão. [...]
Palavras-chave: educação; análise da extensão universitária no Brasil; processo político, econômico e cultural.
problema da linguagem na transição da filosofia humanista para a filosofia moderna
Authors: Guido Humberto Aparecido de Oliveira
Published: November 2022

Resumo: Este artigo introduz a problemática da ruptura epistemológica ocorrida durante a passagem da Filosofia Humanista para a Filosofia Moderna, apresentando a linguagem como elemento de descontinuidade na transição entre um período e outro. A argumentação reforça os elementos comuns aos dois períodos para apresentar a linguagem como mudança de paradigma do estudo da natureza, sendo a matemática, além da sua correspondência com a estrutura da mente humana, essa nova forma de linguagem que instaura a representação como a possibilidade única para a expressão da verdade.
Palavras-chave: Humanismo; Modernidade; Linguagem; Filosofia da Ciência.
 
Abstract: This article introduces the problem of epistemological cut in the transition from Humanistic to Modem Philosophy with focus on language as discontinuity component in that transition. The argument stresses the common elements between two periods and discusses the language as change of paradigm in the study of nature. Matemathics is both: correspondence with the structure of human mind and a new form of language that makes representation the only possible expression of truth.
Universidade e sociedade:
Authors: De Paula José Maria
Published: November 2022

Resumo: A primeira coisa que gostaria de pôr em comum é a relação "orgânica" entre universidade e sociedade. Que quero dizer com isto? Quero dizer que a universidade surge como expressão de solução de necessidades da sociedade. Usei a expressão "orgânica", quase que para explicitar a função de órgão que a universidade desempenharia em relação à sociedade. Antes de mais nada, devo chamar a atenção para a qualidade abstrata de sociedade: o que existe concretamente são os homens, em processo permanente de relacionamento. Ora, em toda relação há um como quê de "desequilíbrio", predominando sobre o outro. Por isto, falar de necessidades da sociedade requer desdobramento histórico, indicando que grupos sociais prevaleciam socialmente, construindo daí as instituições segundo seus interesses.
Palavras-chave: universidade; sociedade; interesses; social.
DIAS, Maria Clara (org.). O que é filosofia? Ouro Preto: Instituto de Filosofia, Artes e Cultura / Universidade Federal de Ouro Preto, 1996. 154 p.
Authors: Seneda Marcos César
Published: November 2022

O livro O que é filosofia? foi organizado por Maria Clara Dias, a partir de um ciclo de conferências realizadas em agosto de 1995 na Universidade Federal de Ouro Preto - UFOP. Traduzido pela organizadora, marca também esta edição um artigo inédito de Ernst Tugendhat, que corresponde às duas primeiras aulas do curso Vorlesungen über Methode der Philosophie, ministrado na Universidade Livre de Berlim em 1982.
Direcionadas pela pergunta-título do livro, as conferências reunidas neste volume questionam a própria validade da atividade filosófica, embora seja impossível proceder a esse questionamento sem filosofar e sem buscar lugar no interior da tradição filosófica. A característica central das respostas é a justificação, como se fosse impossível qualquer definição da filosofia que não partisse de: por que filosofia? A insistência na justificação indica mesmo uma incomum desconfiança, da qual estão livres todos os oficios, exceto a filosofia. Que a medicina cuide do corpo, ou que a astronomia estude a trajetória dos astros, é algo que se apresenta como um dado do oficio; mas a filosofia nunca está dada, e o primeiro passo do seu fazer põe-se como uma reivindicação de fundamento.
DURKHEIM, Émile. Sociologia, Educação e Moral. Porto: Res- Editora, 1984, 398 pp.
Authors: Borges Vera Lúcia Abrão
Published: November 2022

Marcando o pensamento europeu do séc. XIX e atual, Émile Durkheim (1858-1917), um dos fundadores da Sociologia, fundador e diretor da Revista L'Année Sociologique, está na base da História Social praticada na França - como, por exemplo, em Roger Chartier e em Pierre Bourdieu. É o teórico mais acabado do positivismo e do capitalismo em sua fase imperial, escrevendo uma obra vastíssima, que vai da História e da Filosofia à Educação e à Sociologia, merecendo destaque: A Divisão do Trabalho Social ( 1893), As Regras do Método Sociológico ( 1895 ), O Suicídio ( 1897), As Formas Elementares da Vida Religiosa, bem como outros textos de Educação, de Filosofia e de História.
Embora bem conhecidas do público suas reflexões sobre método sociológico, divisão do trabalho, anomia, suicídio e religião, o            mesmo não se pode dizer com relação ao que ele pensa enquanto "pedagogo e teórico da educação e da moral", justamente este que foi o fundador da primeira cátedra de "Educação e Sociologia", na Sorbonne ("Nota da Edição Portuguesa") e que construiu uma teoria da educação que respondia à forma prescrita pela sociedade de então. [...]
Os métodos e técnicas de pesquisa e de estudos e a melhoria do ensino
Authors: Inácio Filho Geraldo
Published: November 2022

O interesse em escrever este texto partiu de um gracejo aparentemente infantil de alguns alunos de primeiros períodos que se utilizaram da sigla sob a qual é identificada a disciplina — MTP — para rebatizá-la de Muito Tempo Perdido. Decidimos, pois, refletir um pouco acerca do mote e entendemos que não é de todo invalidado o xiste, como pretendemos mostrar. E aqui não temos outra preocupação que a de provocar alguma discussão sobre o assunto, que tem uma ligação imediata com a questão da melhoria do ensino. [...]
Palavras-chave: Métodos; Técnicas; Disciplinas; Pedagogia; Ensino.
Reflexões sobre o uso de um instrumento tecnológico, o gravador sonoro, na investigação social: algumas questões
Authors: Soares Neto Cícero José Alves
Published: November 2022

Com a criação de um periódico universitário na UFU, senti-me desafiado a colaborar com um artigo. Veio a preocupação: qual o tema? Mas, por que esta questão? Entende-se que não basta a simples proposta de um periódico publicado e se coloque qualquer idéia no papel para colaborar na revista. Enfim, deve-se evitar "escrever para publicar", pois isto não é o suficiente. Exposta a preocupação inicial, expõe-se o interesse pelo seguinte tema: “o recurso tecnológico na pesquisa social”. O que este artigo visa colocar em cima deste informe inicial? Ou melhor, o que se propõe comunicar neste artigo? Como se pretende desenvolver esta questão nos limites deste artigo? [...]
Palavras-chave: Ciências sociais; Gravador sonoro; Investigação social; Produção capitalista; Recurso tecnológico; Reflexões.
LARA, Tiago Adão. Caminhos da razão no Ocidente; a filosofia ocidental, do renascimento aos nossos dias. Petrópolis, Vozes. 1986
Authors: Silva Mário Alves de Araújo
Published: November 2022

O autor faz uma breve introdução à Filosofia, essa importante fonte de compreensão do mundo.
Num primeiro momento é feita uma breve lembrança da Idade Média, centrada em Deus, para passar em seguida à revolução copernicana no campo do conhecimento humano. O homem passa a ser o centro de explicação do mundo. O eu individual, de caráter racional, ganha grandes proporções em René Descartes, enquanto o mesmo eu é enfocado como o eu que experimenta em Bacon, Galileu, Hobbes, Locke, etc. A nova visão do mundo, da sociedade e do homem é justificada. As relações sociais têm novos fundamentos, o Estado Moderno ganha corpo e se diviniza. [...]
Palavras-chave: Deus; Eu individual; Estado moderno; Filósofos; Idade média; Ocidente.
Management of COVID-19 During Lockdown and Reopening of Schools: An Experience Case under COVID-19 in Portugal
Authors: Martins António Santos
Published: November 2022

The COVID-19 pandemic had a disruptive impact on educational institutions, around the world, during the lockdown and after the reopening of the schools. This unprecedented creates big challenges posed to educators, learners and schools to mitigate the effects of the pandemic.

 

This investigation, supported by a questionnaire, tries to measure the satisfaction of the students, of a Higher-Level Public Education Institution – Guarda Polytechnic (IPG), Portugal, with the measures adopted to control the spread of the COVID-19 pandemic and propose some improvement suggestions.

Although students refer that were satisfied with the arrangement of online classes during the lockdown of the IPG, they recognize that online classes affect negatively the academic performance and prefer face-to-face classes.

In particular, female and older students, students that attend the Master's degrees and students who have been attending the institution for 1 year or less are more satisfied with the overall management of the pandemic.
„Elvegyültem és kiváltam”, avagy az online közösségek befolyása a fogyasztói értékítéletekre
Authors: Prónay Szabolcs
Published: November 2022

érintett területek változatossága olyan expanzión ment keresztül, ami a fogyasztói magatartás kutatói számára nélkülözhetetlenné teszi ezen terület (felül)vizsgálatát. Jelen tanulmány és az ehhez kapcsolódó előadás célja egyfelől bemutatni ezt a változást, másfelől felhívni a figyelmet a lehetséges következményekre. Ebben a környezetben már nem ritka, hogy többszázezres fogyasztói csoportokban (csoportonként) napi ezer poszt feletti interakciós számmal áramlik az információ, szenzitív témákban is (betegségtől, szélsőséges politikai eszméken át, szexuális hovatartozásig). A fogyasztók egymáshoz fordulnak tanácsért, mert e speciális csoportokban percek alatt kapnak releváns és hiteles választ problémáikra. Olybá tűnik, hogy a Google jövőbeni versenytársa nem egy újabb keresőmotor lehet, hanem az alulról szerveződő közösségek – vagyis bizonyos értelemben revansot vesz a hagyományos, szájreklámon alapuló információáramlás a robotizált automatákon.
Tervezhető-e a halál és a gyász? Segíti-e a halál tabujának oldását a fogyasztói szemlélet?
Authors: Csikós Dóra
Published: November 2022

Az életvégi tervezés tudatos hozzáállást követel egy olyan témához, ami alapvetően szorongást kelt, itt is érvényesül a halál tabujának hatása. Annak érdekében, hogy életünk utolsó időszaka méltó körülmények között telhessen, és hogy az utánunk itt maradó szeretteink élete kicsit kevesebb teher mellet indulhasson újra, mégis hajlandók lehetünk foglalkozni ezzel a félelmetes témával: saját halálunkkal. De vajon érdemes-e ennyi energiát tenni a tervezésbe, amikor annyira kiszámíthatatlan a halálunk ideje, módja, helyszíne? Én azt vallom, hogy akármilyen kevés időt fordítunk is rá, az mindig megéri, mivel a tervezésben a tájékozódás igénye és a szeretteinkkel való beszélgetés megkezdése a legfontosabb. Maga a tartalom és a részletek változnak az idő múlásával, de ha a halálról való párbeszéd bármikor folytatható, akkor egyre valószínűbb, hogy igényeink, kéréseink érvényesülnek majd. A hagyományos életvégi döntések és lehetőségek (egészségügyi ellátás, temetkezés, öröklés) köre egyre bővül a tudomány és a halált övező iparágak fejlődésével (digitális javak, virtuális valóság, fenntartható megoldások). Ha a fogyasztói társadalomnak nem a kényszerét, hanem tudatosságát látjuk az életvégi választások kapcsán, akkor akár a tabu ledöntésének eszköze is lehet egy-egy új, a piaci igények alapján kialakított szolgáltatás vagy termék, ami az életvégi időszakhoz vagy a gyászhoz kötődik.
The Influence of Different Training Load Magnitudes on Sleep Pattern, Perceived Recovery, and Stress Tolerance in Young Soccer Players
Authors: Ferreira Ayrton Bruno de Morais , Ribeiro Bruno Laerte Lopes , Batista Elias dos Santos , Dantas Matheus Peixoto , Mortatti Arnaldo Luis
Published: November 2022

Ferreira, ABdM, Ribeiro, BLL, Batista, EdS, Dantas, MP, and Mortatti, AL. The influence of different training load magnitudes on sleep pattern, perceived recovery, and stress tolerance in young soccer players. J Strength Cond Res XX(X): 000–000, 2022—The aim of this study was to analyze the influence of 3 weeks on sleep parameters, perceived recovery, and stress tolerance in young soccer players using different training load magnitudes. A total of 13 young male soccer athletes (15.9 ± 0.5 years; 68.7 ± 6.1 kg; 170 ± 7 cm) who performed 3 typical training weeks with different workloads were analyzed. The external training load (ETL) was verified by the PlayerLoad method, and the internal training load (ITL) was determined using the session rating of perceived exertion method. Sleep was monitored using a wrist-actigraphy monitor. Sleep variables, including total time in bed (TTB), total sleep time (TST), sleep latency (SL), wake after sleep onset (WASO), and sleep efficiency (SE), were evaluated across all nights of sleep. The recovery status was assessed with the perceived recovery status (PRS) scale, and the stress tolerance was monitored using the “daily analysis of life demands of athletes” questionnaire. There was an increase in sleep time during the week with the highest training load (week 2) (TTB: +35 minutes, TST: +46 minutes, SL: −5 minutes, SE: +3%). There was no difference in the PRS or in the stress tolerance during the evaluation weeks. A very large within-individual correlation was observed between ITL and ETL (r = 0.78) and moderate within-individual correlation between ETL and TST (r = 0.34), between ITL and TST (r = 0.45), and between ITL and SE (r = 0.359). These results showed that there was an increase in TST during a microcycle with intensified loads, without impairing bedtime and resulting in maintenance of the perceived recovery or stress tolerance values.
DETERMINATION OF PHYSICOCHEMICAL, ANTIOXIDANT, TEXTURAL AND SENSORY FEATURES OF PASTIRMA CEMEN PASTE PRODUCED BY USING DIFFERENT CONCENTRATIONS OF BLACK GARLIC
Authors: TURAN Emre , ŞİMŞEK Atilla
Published: November 2022

This study aims were to evaluate the effects of using different concentrations (10%, 15%, 20%) of black garlic (BG) as an alternative to fresh garlic on the physicochemical, antioxidant, textural and sensory properties of pastırma cemen paste (CP), and to determine the most appropriate amount of BG in terms of consumer acceptance and bioactive properties. The addition of BG at increasing concentration decreased the moisture, pH, colour (L*, a*, and b*), firmness and stickiness values of the CP compared to the control with fresh garlic. While the total phenolics and antioxidant activity of CP increased with the addition of BG, the highest values were in having 20% BG-added group. On the other hand, considering the parameters of odour, taste, spreadability and general appreciation, the 15% BG-added group was the most appreciated. As a result, 15% BG can be used as an alternative to fresh garlic to increase CP's sensory acceptability and bioactive properties.
Hà Nội Sidewalks
Authors: Châm Nguyễn Thị Phương
Published: November 2022

Hà Nội sidewalks are one of the public spaces that various social groups appropriate and utilize for their own social, political, and economic purposes. Concentrating on the insiders’ point of view, this study offers a close look at how people’s practices create a unique sidewalk culture that affirms the importance of sidewalks in creating a more dynamic city. The article focuses on discussing the pavement as a particular cultural space, a space maintained by the arrangements and negotiations of cultural agency. The pavement is not messy, sleazy, or out-of-date but orderly, flexible, humane, and rich in identity.
The Great Unity
Authors: Thanh Vo Duy
Published: November 2022

This essay explores the interconnections between Hòa Hảo religious practices, charity, and reconciliation of ethnic and political conflicts in the contemporary Vietnam-Cambodia borderland by looking at the relationship between Hòa Hảo traditional healers and patients of Kinh and Khmer backgrounds, Cambodian nationals, and retired Vietnamese communist cadres. It argues that the healing practices in a frontier Hòa Hảo herbal clinic have been inclusive and have involved the participation of diverse groups with whom the practitioners were formerly in conflict. The essay shows how the Hòa Hảo continue to build social solidarity in a pluralist borderland region with a more ethnically diverse set of relationships than has been previously recognized.
Biochemically validated structural model of the 15‐subunit intraflagellar transport complex IFT‐B
Authors: Petriman Narcis A , Loureiro‐López Marta , Taschner Michael , Zacharia Nevin K , Georgieva Magdalena M , Boegholm Niels , Wang Jiaolong , Mourão André , Russell Robert B , Andersen Jens S , Lorentzen Esben
Published: November 2022

Cilia are ubiquitous eukaryotic organelles impotant for cellular motility, signaling, and sensory reception. Cilium formation requires intraflagellar transport of structural and signaling components and involves 22 different proteins organized into intraflagellar transport (IFT) complexes IFT‐A and IFT‐B that are transported by molecular motors. The IFT‐B complex constitutes the backbone of polymeric IFT trains carrying cargo between the cilium and the cell body. Currently, high‐resolution structures are only available for smaller IFT‐B subcomplexes leaving > 50% structurally uncharacterized. Here, we used Alphafold to structurally model the 15‐subunit IFT‐B complex. The model was validated using cross‐linking/mass‐spectrometry data on reconstituted IFT‐B complexes, X‐ray scattering in solution, diffraction from crystals as well as site‐directed mutagenesis and protein‐binding assays. The IFT‐B structure reveals an elongated and highly flexible complex consistent with cryo‐electron tomographic reconstructions of IFT trains. The IFT‐B complex organizes into IFT‐B1 and IFT‐B2 parts with binding sites for ciliary cargo and the inactive IFT dynein motor, respectively. Interestingly, our results are consistent with two different binding sites for IFT81/74 on IFT88/70/52/46 suggesting the possibility of different structural architectures for the IFT‐B1 complex. Our data present a structural framework to understand IFT‐B complex assembly, function, and ciliopathy variants.
La relación de la Historiografía de la «Lingüística Misionera» y de la «Lingüística Colonial»: algunas puntualizaciones
Authors: Zimmermann Klaus
Published: November 2022

A raíz de la reciente aparición en Alemania de un área de investigación denominada Lingüística colonial (LC), en la que se suele incluir la Lingüística Misionera (LM), se ofrece una revisión de ambas áreas de conocimiento e investigación como objetos de interés de la Historiografía Lingüística (HL) y se delimitan los campos de estudio o subáreas (LC e Historiografía de la LC, LM e Historiografía de la LM), con el fin de explicar las relaciones entre ellas, así como sus objetivos y métodos. Asimismo se analizan las diferencias que el estudio y desarrollo de estas disciplinas ha tenido en la tradición iberorromance, en la francesa y en la alemana.
Outcrossing y selección de cuyes mejorados de la región Cajamarca para producir descendencia superior con altos índices de mérito genético
Authors: Mantilla José , Valdez Eduar , Mantilla Joe , Paredes Manuel , Mustafa Arif
Published: November 2022

El estudio tuvo como objetivo establecer una práctica de mejoramiento genético de cuyes basado en el outcrossing y selección por mérito genético en el Centro de Producción de Genética Superior (CENPROGEN-SUP), ubicado en el valle de Condebamba, región Cajamarca, Perú. Los progenitores de los cuyes evaluados procedieron de los valles interandinos de Cajamarca (cuyes FICP) y de Condebamba (cuyes Mangallana y cuyes Cholocal). El crecimiento de la descendencia de los cuatro cruces se evalúo bajo las mismas condiciones de manejo y alimentación. Se trabajó con 80 cuyes machos cruzados recién destetados (outcross) y seleccionados a partir de los cruzamientos de machos Mangallana con hembras FICP puras (MFp), machos Mangallana con hembras FICP cruzadas (MFc), machos FICP puros con hembras Cholocal (FpC) y machos FICP cruzados con hembrasMangallana (FcM). En general, el cruce MFp obtuvo el mayor peso promedio al destete (352.1 g), ganancia de peso (16.7 g/día), longitud corporal (36.3 cm) y perímetro torácico (24.9 cm) a los 70 días de edad, seguido del cruce MFc. No hubo diferencias en conversión alimenticia entre grupos. Se concluye que el outcrossing entre reproductores superiores y la posterior selección de su descendencia para caracteres de importancia económica permite obtener descendencias de machos cruzados genéticamente superiores.
Causas y factores asociados con la mortalidad de neonatos en rebaños de ovino criollo
Authors: Espinoza-Montes Francisco , Saavedra Peña Evelio , Ballardo Matos Cindy , Núñez Rojas Wilfredo , Córdova Zorrilla Alfredo
Published: November 2022

El estudio se realizó para identificar las causas y factores asociados con la mortalidad de corderos neonatos en rebaños de ovinos criollos en sistema de crianza extensiva. Se seleccionaron tres estancias ubicadas en los pastizales de la comunidad campesina de Quero, provincia de Jauja, Perú, entre 3972 y 4430 msnm. Los rebaños fueron visitados una vez cada dos semanas para recopilar información de la mortalidad. La tasa de mortalidad neonatal al final de la época de parición fue de 21.2%. Las causas de mortalidad fueron en orden de frecuencia: neumonía, inanición, distocia, diarrea y depredación. La mayor tasa de mortalidad ocurrió dentro de las 48 horas del parto (71.4%). Los corderos nacidos de ovejas con una condición corporal (CC) <2 tuvieron mayor probabilidad de morir que aquellos nacidos de una oveja con mejor CC (OR = 7.42). Asimismo, corderos con >2 kg de peso al nacer (OR = 3.52) y los que nacieron en el rebaño C (OR = 3.42) tuvieron tres veces mayor probabilidad de morir que los corderos más pesados o los que nacieron en las estancias A y B, respectivamente.
A review of Tephritidae and Ulidiidae (Diptera, Tephritoidea) of Croatia
Authors: Kovac D. , Kameneva E. P. , Korneyev V. A.
Published: November 2022

Started by G. R. von Frauenfeld, R. Schiner and G. Strobl over 120 years ago by collecting several species in “Dalmazien”, studies of the fruit flies (Tephritidae) and picture-winged flies (Ulidiidae) in Croatia to date have been casual and fragmentary. Regular collecting of these families in Modruš (Karlovac County) during 2021–2022 has resulted in a list of 85 species of Tephritidae and 15 species of Ulidiidae presented here, of which 21 Tephritidae and three Ulidiidae species, respectively, are recorded from Croatia for the first time. Examined material and references are listed, and the rare or newly recorded species are illustrated. The status of type specimens of some nominal species described by Frauenfeld and Schiner from Croatia is discussed.
Congruencia ideológica en América Latina. Una propuesta de medición en tres niveles de representación política: elites, ciudadanos y programas electorales
Authors: Martínez-Hernández Aldo Adrián , Miranda Olivares Nicolás , Sendra Mariana , Olucha Sánchez Francisco
Published: November 2022

El estudio de la congruencia política permite determinar hasta qué punto las posturas de los gobernantes y partidos políticos reflejan las preferencias ciudadanas; es, por lo tanto la congruencia política, un indicativo de la representación política y del estado de la democracia. El objetivo del presente trabajo es determinar el grado de congruencia entre los posicionamientos ideológicos en América Latina, desde una visión integral -ciudadanos, legisladores y programas gubernamentales- implementando una estrategia multinivel que ubica a los partidos políticos como unidad de análisis. Los resultados arrojan, de forma holística y descriptiva, la observación de realidad ideológica de la región, donde destacan la variedad de vínculos y trayectorias ideológicas de los sistemas de partidos latinoamericanos, así como los bajos niveles de congruencia durante la última década.
Populismo y política exterior: el caso de los Estados Unidos de Donald Trump
Authors: Caro Isaac , Quitral Máximo , Riquelme Jorge
Published: November 2022

El artículo analiza la manera como el liderazgo populista de Donald Trump impactó en la política exterior de Estados Unidos. En tal sentido, se señala que, como un presidente jacksoniano y con un enfoque propio, en tanto hombre de negocios, Trump puso en práctica un estilo diplomático marcadamente nacionalista y personalista, que tuvo entre sus principales víctimas al multilateralismo y al orden liberal internacional, al mismo tiempo que asumía un relevante rol como referente de una nueva derecha radical.
Colombia frente a la integración regional en América Latina: entre la iniciativa de liderazgo y la prelación hacia Estados Unidos
Authors: Prieto Germán Camilo , Giraldo María Carolina
Published: November 2022

Mucho se ha escrito sobre la alternancia de Colombia entre dos directrices de política exterior: el respice polum y el respice similia. Pero son más bien escasos los trabajos que analizan estas directrices en relación con sus actuaciones frente a los distintos procesos y proyectos de integración regional en los que el país se ha visto involucrado en América Latina. Este artículo ofrece una contribución para llenar este vacío, a través de una mirada longitudinal de la actuación de Colombia en dichos proyectos, buscando mostrar que, si bien la prelación hacia Estados Unidos ha predominado en muchos momentos, en el país también ha habido iniciativas para liderar procesos de cara al fortalecimiento de la integración y la cooperación regionales.
Experimental evaluation of the strut-and-tie method applied to low-rise concrete walls
Authors: Carrillo León Julian , M. Alcocer Sergio
Published: November 2022

The strut-and-tie method (S-T) is a practical tool for the seismic design of reinforced concrete elements. Experimental and analytical research with low-rise concrete walls was carried out for assessing the S-T method proposed by the current ACI-318 building code. Four specimens designed to fail during shear and shaking table tests were included in the experimental programme. The variables studied consisted of the type of concrete (normal and cellular weight), the amount of steel web (0.125% and 0.25%) and the type of web reinforcement against shear (corrugated bars and welded wire mesh). Wall properties were typical of low-rise housing in Mexico. When the calculated shear strength was compared with the measured one it was found that the S-T method proposed by the ACI-318 building code suitably estimated the shear capacity of the models being studied. However, the walls shear failure mode, loading rate, the number of cycles and the cumulative energy dissipated would noticeably affect the degradation in strength of low-rise, reinforced concrete walls.
The feasibility of speeding up 2D seismic migration using a specific processor on an FPGA
Authors: Abreo Carrillo Sergio Alberto , Ramírez Silva Ana Beatriz
Published: November 2022

This paper was aimed at describing the state of the art regarding 2D migration from a software and hardware perspective. It also gives the current state of specific processing using field programmable gate array (FPGA) and then concludes with the feasibility of fully implementing 2D seismic migration on a FPGA via a specific processor. Work was used showing performance in different areas of knowledge to gain an overview of the current state of specific processing using FPGAs. As 2D seismic migration employs floating-point data, this article thus compiles several papers showing trends in floating-point operations in both general and specific processors. The information presented in this article led to concluding that FPGAs have a promising future in this area due to oil industry companies having begun to develop their own tools aimed at further optimising field exploration.
The effect of applying different water levels and irrigation frequencies in propagating rosemary (Rosmarinus officinalis L.)
Authors: Álvarez Herrera Javier Giovanni , Balaguera López Helber Enrique , Chacón Pardo Edinson
Published: November 2022

Rosemary seedlings are obtained by vegetative propagation because the seeds present low viability. Despite being an expanding crop, there is little information on water consumption during the propagation stage. Water levels and irrigation frequencies were therefore applied using a completely randomised design having a 4 x 2 factorial arrangement. The first factor concerned irrigation frequency (4 and 8 days) and the second concerned water level (0.6, 0.8, 1.0 and 1.2 evaporation inside the greenhouse). A 1.0 coefficient combined with 4-day irrigation frequency presented the best results regarding height (39.3 cm), fresh weight, dry weight and branch length (146 cm). Water level affected the fresh and dry weight of leaves regardless of frequency. Relative water content in leaves did not present differences due to environmental conditions minimising treatment effect. Rooting percenttage showed no significant differences regarding irrigation frequency or water level. Irrigation frequency did not affect rosemary growing pattern because sphagnum retains high moisture content. The best branch number (34) was obtained with 1.0 coefficient and 4-day frequency, this being important from the production point of view because this is the material which is sold. Water management changes photoassimilate distribution in rosemary plants.
Using a heat pipe (TPTC) for dissipating energy generated by an electronic circuit
Authors: Correa Rodrigo , Reyes Ortíz Oscar Javier , Marín Jeison
Published: November 2022

This paper presents an experimental investigation aimed at estimating the thermal efficiency of a heat pipe compared to the most common elements for removing heat from a circuit (i.e., an electric fan and a fin - extended surface). The input voltage frequency for a standard power circuit was changed for the experiments, whilst all the other parameters were kept constant. An experimental statistical design was used as an analytical tool. Unexpectedly, the heat pipe showed the lowest thermal efficiency for all the experiments, although it had the advantage of being a passive element having low volume and no mobile parts.
Statistical modelling of fine red wine production
Authors: Castro María Rosa , Echegaray Marcelo Eduardo , Rodríguez Rosa Ana , Maris Udaquiola Stella
Published: November 2022

Producing wine is a very important economic activity in the province of San Juan in Argentina; it is therefore most important to predict production regarding the quantity of raw material needed. This work was aimed at obtaining a model relating kilograms of crushed grape to the liters of wine so produced. Such model will be used for predicting precise future values and confidence intervals for determined quantities of crushed grapes. Data from a vineyard in the province of San Juan was thus used in this work. The sampling coefficient of correlation was calculated and a dispersion diagram was then constructed; this indicated a lineal relationship between the liters of wine obtained and the kilograms of crushed grape. Two lineal models were then adopted and variance analysis was carried out because the data came from normal populations having the same variance. The most appropriate model was obtained from this analysis; it was validated with experimental values, a good approach being obtained.
Designing and analysing parallel control for multifeed ternary systems
Authors: Solar-González Rocío
Published: November 2022

This paper explores a parallel control structure for improving the behaviour of a chemical plant having recycling and multiple feed streams; a ternary system is taken as an example, having an A+B→C second-order irreversible reaction. Material recycling dynamics can induce the so-called snowball effect in the presence of disturbance in the feed stream. The snowball effect can be prevented by distributing load through the parallel control scheme. A control structure was thus proposed where product composition was regulated by means of simultaneous feedback manipulation of final column vapour boilup rate and reactor temperature. An extension was made for one reactor, one distillation column and recycle stream configuration. Nonlinear simulations showed that effective composition control could be obtained with moderate vapour boilup control efforts.
Designing, assembly and start up for a semiautomatic hot-air tray dryer
Authors: Vargas Solano Edgar Mauricio , Garzón Rodríguez Fredy Alexander
Published: November 2022

Designing specific equipment as a teaching and investigation tool in engineering is an interesting alternative for reducing costs and contributing towards local appropriation of knowledge and technology. It makes adaptation to the environment easier and reduces technology dependency. This work shows how a semiautomatic hot-air tray-dryer was designed, built and brought into operation, describing the pertinent engineering stages. The dryer was controlled by using Microsoft Visual Basic and could simulate environmental conditions (temperature and humidity) anywhere in Colombia. Drying curves for Dominico Hartón variety banana were made for two temperatures (50°C and 70°C), in duplicate, to validate the equipment.
Treatment of COD analysis liquid wastes generated in environmental laboratories
Authors: Mañunga Tatiana , Gutiérrez Héctor Mario , Rodríguez Victoria Jenny Alexandra , Villarreal Díaz Alexander
Published: November 2022

COD analysis is often carried out in environmental labs. Its wastes are considered hazardous due to the content of metals such as Cr, Ag and Hg; treating these wastes is considered complex and expensive. The experimental results of metal ion precipitation in COD wastes with affordable chemical products are reported in this work. Cr (VI) was chemically reduced by adding 200 mg.L-1 of glucose to Cr (III). Final Cr(VI) concentration was less than 0.5 mg.L-1. Cr (III) was precipitated as a metallic hydroxide by adding NaOH and Ag was reduced to less than 0.2 mg.L-1 by adding 2 g.L-1 of NaCl. Hg was reduced to less than 0.005 mg.L-1 with 10 g.L-1 of FeS. The proposed reduction-precipitation methodology allowed minimising the liquid residue's hazardous characteristics so that it complied with the maximum allowable values established in Chapter 6, Article 74 of Decree 1594/1984 that regulates the use of water and liquid residues.
EMI filter techniques in power electronic converters
Authors: Hoyos Velasco Fredy Edimer , Younes Velosa Camilo , Cano Plata Eduardo Antonio
Published: November 2022

This paper presents the results of EMI reduction techniques applied to power electronic converters. The techniques applied included shielding control and power signals, separating power system references regarding reference for instrumentation and measurement signals, implementing analog filters and configuring an appropriate switch trigger system for electronic power to decrease shifting EMI emissions to the maximum. This paper presents the results before and after applying the techniques to reduce interference. The results were also verified by using two real time control strategies rapid control prototyping (RCP).
Asphalts´ aging phenomenon
Authors: Vargas Xiomara , Reyes Freddy
Published: November 2022

This work presents a state of the art revision of the results from studies of asphalt aging found by researchers aimed at deepening understanding of this complex phenomenon. The background shows the evolution of asphalt aging, initially considering it as physical hardening and progressively recognizing it as a complex phenomenon having repercussions on asphalt durability and physical-chemical properties. This document aims to be a guide for understanding future investigations for developing new types and mixtures of asphalt having improved properties.
Assessment and analysis of local marginal prices as an effect of electric transmission constraints in the Colombian power market
Authors: Gallego Vega Luis Eduardo , Duarte Velasco Oscar Germán
Published: November 2022

This paper gives the results of research assessing and analysing local marginal prices in the national transmission grid as an alternative for analysing the effect of electric transmission constraints in the Colombian power market. This study compares the current one-bus model where a spot price is determined without considering transmission network constraints. It describes the modelling of the national transmission grid, power system operation and economic dispatch and a methodology for approaching the system´s electrical constraints and operational constraints. An analysis of local marginal prices for each operational zone in the Colombian power system is presented as a result of this modelling, as well as statistical modelling of congestion income.
Implementing FEM-DtN for an incompressible material on an unbounded domain
Authors: Camargo Liliana , Duque Jairo
Published: November 2022

This paper presents the implementation of the finite element method combined with Dirichlet-to-Neumann (DtN) mapping (derived in terms of an infinite Fourier series) for studying the solvability of an exterior problem arising in linear incomepressible 2D-elasticity. A reliable numerical experiment is also presented showing the accuracy of DtN mapping; only a few Fourier series terms were needed to get a good approximation to the solution. The stable Taylor-Hood element was used for finite element discretisation.
The current state of nonconventional sources of energy and related perspectives
Authors: Narváez Rincón Paulo César
Published: November 2022

This article presents an overview of world and Colombian energy sources, including distribution, production and consumption by fuel and end-user sectors, respectively, as well as a brief description of some non-conventional energy sources (NCES), pointing out those classified as bioenergy and used as non-conventional fuels in the transport and electricity generating sectors. Colombian policies for promoting the rational use of energy (RUE) and NCES are presented and their targets are compared to some established by the European Union and the USA.
Non-uniform Euler-Bernoulli beams´ natural frequencies
Authors: Aya Hugo , Cano Ricardo , Zhevandrov Petr
Published: November 2022

This paper has studied the problem of natural frequencies for Euler-Bernoulli beams having non-uniform cross-section. The numerically-obtained solutions were compared to asymptotic solutions obtained by the Wentzel-Kramers-Brillouin (WKB) method. It was established that WKB formula precision was higher than 3% for high frequencies (≥ 4 mode).
Anaerobic treatment of lactic waste and goat manure
Authors: Magaña-Ramírez J. Luís , Rubio-Núñez Rubria , Jiménez-Islas Hugo , Martínez-García Martín T.
Published: November 2022

Anaerobic digestion was carried out to obtain biogas from lactic waste in combination with goat manure. Waste from lactic products such as cream, cheese and whey was mixed with goat manure using three formulations; the quantity of waste from cream and cheese was maintained, and only the quantity of manure and whey was varied. Methanogenic bacteria obtained from predigestion of goat manure were used as inoculants. Temperature was 35°C and pH 7.0. Biogas methane percentage was determined by gas chromatography. The results showed that the highest methane concentration obtained was 82% with formulation III.
Hydroinformatics’ contribution to Amazonian water resources and ecosystem management
Authors: Manrique-Losada Bell , Echeverri-Arias Jaime Alberto , Peláez-Rodríguez Marlon
Published: November 2022

Significant progress has been made during recent years in applying information technologies to water resource management from a multidisciplinary field called hydroinformatics; this can change the focus of environmental impact assessment and decision-making according to available environmental resources. This article presents an image retrieval system which uses the Universidad de la Amazonia’s (Colombia) Aquatic Ecosystem Quality and Preservation Research Group’s (CAPREA) digital image collection. Automatic picture classification (having attributes relative to water color, edges and flow type) is proposed which has been based on Dinnertein's classification, adapted by the Universidad Nacional de Colombia's Hydrology and Meteorology Institute and Environment Studies in 2001.
GaAs/AlGaAs nanoheterostructures: Simulation and application on high mobility transistors
Authors: Rodríguez Eduardo Martín , González R. Estrella
Published: November 2022

This work analyses the features of GaAs/AlGaAs heterostructure, highlighting semiconductor junction properties. Charge confinement was produced when two materials having different band-gap were fixed; such high electron concentration is called two-dimensional electron gas (2DEG). Device simulation for smart integrated systems (DESSIS) is simulation software which uses physical models and robust numerical methods for simulating semiconductor devices and 3-5 element heterostructures. Results for different heterostructure doping profiles and voltages are presented in this work. High electron mobility transistors (HEMTs) are one of the most important applications for heterostructures; they work on 30 to 300 GHz frequency ranges. These transistors are simulated in this work; a 1 A/mm2 high current density was obtained in the channel, such value being comparable to other values reported for similar transistors.
Designing, constructing and evaluating a dynamic prototype dryer for obtaining rolled dehydrated fruit pulp
Authors: Vanegas Mahecha Pedro , Parra Coronado Alfonso
Published: November 2022

This paper describes how a functional prototype for a dynamic dryer was designed, along with its basic parts: drying tunnel, mechanical transport system for material inside the equipment and selecting and designing a system for supplying hot air. A simple transport mechanism was implemented which allowed combining two flow dispositions: parallel and countercurrent flow. Mango (Mangifera indica L) pulp was dehydrated using three dryer air temperatures (50°C, 60°C and 70°C) and three drying air speeds inside the dryer (1.6, 2.2, 3.4 m s-1) for evaluating the prototype. Propane gas was used as fuel for heating the air. The prototype design led to dehydrating fruit pulp having 4.26 bs smooth initial humidity content up to a 0.11 db final humidity content, with 8-hour drying time (70°C and 3.4 m s-1 air speed), assuming 4.5± 0.5 mm pulp thickness, in 300 x 180 mm and 15 mm height rectangular trays. 1.5 0.5 mm thickness rolled dehydrated pulps were obtained in these conditions The final product had 0.60a (aw) water activity providing for a stable product, having low water content and very similar characteristics to those of the fresh product (shown by Weende analysis).
The past, present and near future of materials for use in biodegradable orthopaedic implants
Authors: Plazas Bonilla Clara Eugenia , Perilla Jairo Ernesto
Published: November 2022

The aim of bone replacement or fracture treatment methodologies is to induce tissue regeneration respecting anatomy and try to recover functionality. This goal was initially achieved in the 17th century by using animal or human grafts and several medical devices made of natural and synthetic materials are currently used having a whole range of chemical and physical properties. Research in this field continues to seek a solution to the disadvantages usually found when using grafts: immunological reactions, the risk of microbiological contamination, the absence of donors, the need for several surgical interventions and the risk of disease transmission. Basic and applied research must thus be carried out not only in the development of biology and studies about embryonic stem cells but also in the field of new material development. This tendency may be clearly detected by looking at the vast numbers of studies related to using metallic, polymer and ceramic materials and, at present, compound or hybrid materials having potential use in orthopaedic implants. Most of them fulfil conditions regarding biocompatibility and non-toxicity and could be considered when designing biodegradable materials thereby making it feasible to identify a range of research subjects on biomaterials. This paper starts by identifying material development periods and then establishes the advantages and disadvantages of groups which have been considered for bone regeneration and identifies some guidelines which should be taken into account in the field of biodegradable materials in the near future. There is still a long way to go in this subject, especially regarding the field of materials science and technology