bluuebunny/crossref_metadata_2025_split huggingface dataset:
Estimación de componentes de varianza genética y heredabilidad en una población de maíz amarillo tropical
Authors: San Juan Luis Hernández , Oyervides García Arnoldo , De la Rosa Loera Alfredo , De León Castillo Humberto 
Published: January 2024

Para estudiar el potencial genotécnico de una población existen diversos diseños de apareamiento, que permiten estimar los efectos y varianzas genéticas. Los objetivos del presente trabajo fueron: a) Estimar la proporción de varianza genética aditiva y de dominancia y la heredabilidad de una población de maíz amarillo; y b) Sugerir un procedimiento de mejoramiento genético efectivo, que permita mejorar las características de herencia cuantitativa presentes en la población. Se utilizaron 300 familias de hermanos completos (FHC), desarrollados bajo el diseño I de Carolina del Norte y evaluados en Úrsulo Galván, Ver., México, utilizando un diseño experimental de bloques incompletos con arreglo alfa latice (0.1), con dos repeticiones. Los efectos y varianzas genéticas se estimaron con el procedimiento VARCOMP (Method=type1) e IML del programa SAS. Los resultados indicaron que la población mostró una estructura genética con pocas diferencias entre y dentro de variables. La mayor proporción de la varianza genética se atribuyó a los efectos aditivos, en altura de mazorca 2 s A= 44.68, y rendimiento 2 s A= 0.13. La 2 sDpara todas las variables fue igual a cero. La h2 para rendimiento fue 17 %. En el biplot se observó que los genotipos se expresaron diferente para altura de planta y mazorca, por la magnitud de sus vectores, mientras que en rendimiento los genotipos fueron estadísticamente iguales. Los progenitores derivados de una población de amplia variabilidad genética pueden ser seleccionados y cruzarse en forma de dentados por cristalinos, lo cual permite encontrar un buen comportamiento heterótico, y elegir un mejor esquema de mejoramiento inter poblacional.
Character Strengths and Emotion Self-regulation in Brazilian Workers
Authors: Guimarães Monique A. , Batista Helder H. V. S. , Pio Jamile L. S. , Noronha Ana Paula P. 
Published: January 2024

Character strengths and emotion self-regulation are relevant psychological resources to help workers cope with current demands in the workplace. The present investigation aimed to test the association with and the predictive power of the character strengths regarding emotion self-regulation. A total of 203 participants aged 18 to 68 years answered the sociodemographic questionnaire, Character Strength Scale – Brief (CSS-Brief), and the Emotion Self-Regulation Scale – Adult (ESRS-AD). The findings indicated weak to strong associations between the CSS-Brief and ESRS-AD factors. The intrapersonal strength and the intellectual and interpersonal strengths predicted the emotion self-regulation strategies likely to be adopted by the workers. The gathered evidence suggested significant differences in the ESRS-AD and CSS-Brief regarding the participants’ sociodemographic features. These results have occurred regardless of the workers’ hierarchical level and job department.
Las fortalezas del carácter y la autorregulación de las emociones son recursos psicológicos relevantes para ayudar a los trabajadores a hacer frente a las demandas actuales en trabajo. La presente investigación tuvo como objetivo probar la asociación y el poder predictivo de las fortalezas del carácter con respecto a la autorregulación emocional. Un total de 203 participantes con edades entre 18 y 68 años respondieron el cuestionario sociodemográfico, la Escala de Fortaleza del Carácter - Breve (EFC-Breve) y la Escala de Autorregulación Emocional - Adulto (EARE-AD). Los resultados indicaron asociaciones de débiles a fuertes entre los factores CSS-Brief y ESRS-AD. La fortaleza intrapersonal y las fortalezas intelectuales e interpersonales predijeron las estrategias de autorregulación emocional susceptibles de ser adoptadas por los trabajadores. La evidencia recopilada sugirió diferencias significativas en ESRS-AD y CSS-Brief con respecto a las características sociodemográficas de los participantes. Estos resultados se han producido independientemente del nivel jerárquico y del departamento de trabajo de los trabajadores.
Del Cantábrico al Mediterráneo y más allá: los patrones vascos según los seguros marítimos de Barcelona (1440-1472)
Authors: Conde Mendoza Inazio 
Published: January 2024

In this paper, our goal is to analyze the role that the Basque skippers played in one of the most critical decades that medieval Barcelona experienced: the years of the Civil War (1462-1472). In addition, due to the fact that the port records aren´t preserved for this decade, we have explored the advantages of combining both sources (insurances and ancoratge) conserved in the 1440-1443 period, in order to analyze their movements throughout several months. In this context, Barcelona’s trade witnesses the presence of foreign skippers like the Basques, which allows us to pose several questions about their role and routes. To answer these questions, we count on sources such as the maritime insurances of Barcelona’s notaries: they report us on the recurring ports of these ships —mainly those of the western part of the Mediterranean— and which products they distributed, like wool, salt or wheat.
En este artículo, nuestro propósito consiste en analizar el papel que los patrones de nave vascos desempeñaron durante la década de 1462 a 1472, la de la guerra civil catalana. Igualmente, debido a que no se conservan registros del puerto para esta década, hemos comprobado cómo la combinación de ambas fuentes (seguros y ancoratge) para los años 1440-1443 nos permite recomponer sus itinerarios. En este contexto, el comercio barcelonés fue testigo y beneficiario de la presencia de patrones extranjeros como los vascos, lo que nos permite preguntarnos sobre su actividad y sus rutas. Para responder a estas cuestiones, contamos con los seguros marítimos de los notarios barceloneses, que mencionan los puertos más frecuentados por estas naves —principalmente del Mediterráneo occidental— y los productos que distribuían, como la lana, el trigo o la sal.
Conceitos de “Geografia” e “História” do ensino básico ao superior – ensaio no NW de Portugal
Authors: Pacheco Elsa , Solé Glória , Soares Laura , Gago Marília 
Published: January 2024

This study reflect about the evolution of perspectives and concepts of Geography and History presented by students of basic and higher education. It is relevant to understand what young people, in different stages of education, retain about these two areas to clarify whether their reading reflects, or not, the contents and objectives and if they translate, or not, the recent international concerns of education in Geography and History.
The starting point is the analysis of the data collected from students at the end of study cycles, through a questionnaire with two open-ended questions, in which we ask them to express "concepts" and "importance/value" for each subject: (1) what is Geography/History; (2) what is Geography/History for. This will result in a hierarchy of the most relevant words, which will be crossed, through a quantitative-descriptive methodology, with those considered: in the Essential Learnings of each study cycle; the purposes of the training pathway of Geography and History teachers in higher education; and with the international benchmarks of teaching and education for these scientific areas.
The results express the need to consolidate bridges between the ideas emanating from international scientific forums and the design of the study plans, with reflection on the conceptions that students build about Geography and History, in their relationship with teacher training.
Este estudo reflete sobre a evolução das perspetivas e conceitos de Geografia e História apresentados pelos estudantes do ensino básico/secundário e do superior. É relevante compreender o que é que os jovens, em diferentes estádios de formação, retêm acerca destas duas áreas, de forma a clarificar se a sua leitura espelha os conteúdos e objetivos e se traduzem as preocupações internacionais recentes de educação em Geografia e História. Parte-se da análise dos dados recolhidos junto de alunos em fim de ciclo de ensino, através de um questionário com duas perguntas de resposta aberta, nas quais se pretende que expressem “conceitos” e a “importância/valorização” para cada disciplina: (1) o que é a Geografia/História; (2) para que serve a Geografia/História. Daqui resultará a hierarquia de palavras mais relevantes, que será cruzada, através de uma metodologia quantitativa-descritiva, com as consideradas nas Aprendizagens Essenciais de cada ciclo de estudos dos ensinos básico e secundário; com os propósitos do percurso da formação de professores de Geografia e História no ensino superior; e com os referenciais internacionais de ensino e educação para estas áreas científicas. Os resultados expressam a necessidade de consolidar pontes entre as ideias emanadas de fóruns científicos internacionais e o desenho dos planos de estudo, com reflexo nas conceções que os estudantes constroem sobre a Geografia e a História, na sua relação com a formação de professores.
El estudiante como capital humano en la educación secundaria: un análisis del impacto de variables sociodemográficas en la percepción del aprendizaje
Authors: Trigueros Cano Francisco Javier , Álvarez Martínez-Iglesias José María , Molina Saorín Jesús , Zaragoza Vidal María Victoria 
Published: January 2024

Spain (statistically and at European level) occupies the top positions among the countries with the highest school dropout rates; and along the same lines, various studies (INE, 2020; Vaquero, 2011) confirm that teachers in our country consider that education must be transformed to ensure that all students feel that they are the protagonists of the learning process; and that - in addition - everything they learn can be transferred to develop as citizens to the extent that their needs are also met (Álvarez et al., 2020:20). In this sense, it is absolutely necessary to know (through the student's perception) to what extent the socio-demographic variables that students present intervene and condition the learning process and its transfer. For this purpose, a purposive sample has been configured in which more than 1,400 4th ESO subjects (from Spain) have participated, with a significance level of 0.05 using a scale -original and unpublished- called EPECOCISO (Evaluation of the perception of social science competences -Álvarez, Trigueros, Miralles and Molina, 2020-).
España (estadísticamente y a nivel europeo) ocupa las primeras posiciones de los países con mayores tasas de abandono escolar; y en esa misma línea diversos estudios (INE, 2020:155; Vaquero, 2011:3) constatan que los docentes en nuestro país consideran que la educación debe transformarse para hacer que todos los alumnos lleguen a sentirse protagonistas del proceso de aprendizaje; y que –además– todo lo aprendido pueda ser transferido para desarrollarse como ciudadanos en la medida que también satisfagan sus necesidades (Álvarez et al., 2020:4). En este sentido, resulta del todo necesario conocer (a través de la percepción del estudiante) en qué medida las variables sociodemográficas que presenta el alumnado intervienen y condicionan al proceso de aprendizaje y su transferencia. Para ello, se ha configurado un muestreo intencional en el que han participado más de 1400 sujetos de 4.º de ESO (de España), con un nivel de significatividad de 0,05 utilizando una escala –original e inédita– denominada EPECOCISO (Evaluación de la percepción sobre las competencias de ciencias sociales –Álvarez, Trigueros, Miralles y Molina, 2020:1-15–).
Evaluación de una unidad didáctica de innovación sobre el siglo XVII a través de pensamiento histórico y recursos visuales.
Authors: Miralles Sánchez Pedro 
Published: January 2024

This article has analyzed the implementation of a didactic unit of innovation based on the 17th century in a third year of ESO during the second period of practices of the master's degree in Teacher Training at the University of Murcia. To do this, a theoretical framework based on historical thinking and the strategies and teaching resources used is provided. Next, a brief description of the didactic unit is made, as well as the method used to carry out the research, exposing its objectives, the context and the information collection instruments, which basically consist of two questionnaires passed before and after implementation. of the training unit. Finally, the results of these questionnaires have been presented and analyzed based on the main objectives of the work, and finally the educational implications that the results and conclusions obtained have been discussed. The results and conclusions have been positive.
Este artículo ha analizado la implementación de una unidad didáctica de innovación basada en el siglo XVII en un curso de tercero de ESO durante el segundo periodo de prácticas del Máster de Formación del Profesorado de la Universidad de Murcia. Para ello, se dispone un marco teórico basado en el pensamiento histórico y las estrategias y los recursos didácticos utilizados. Seguidamente, se hace una breve descripción de la unidad didáctica, así como el método utilizado para llevar a cabo la investigación exponiendo sus objetivos, el contexto y los instrumentos de recogida de información, que básicamente consisten en dos cuestionarios pasados antes y después de la implementación de la unidad formativa. Por último, los resultados de estos cuestionarios han sido expuestos y analizados en base a los objetivos principales del trabajo, y finalmente se comentan las implicaciones educativas que pueden tener los resultados y las conclusiones obtenidas. Los resultados y las conclusiones han sido positivos.
ANÁLISE DA COMPETITIVIDADE INTERNACIONAL DO SISTEMA AGROINDUSTRIAL DO CAJU BRASILEIRO
Authors: França Francisco Mavignier Cavalcante , Barbosa Silva Carvalho Eveline 
Published: January 2024

É uma tentativa de situar o sistema agroindustrial do caju brasileiro frente ao mercado internacional da amêndoa e mostrar a tendência mais provável desse sistema face à forte concorrência que se vem acelerando. Apresentadas as oportunidades e as ameaças nos vários elos do agribusiness do caju e, com base nessas evidências, são apresentados três cenários: um pessimista, onde se mostra que se a atividade permanece no status quo, ela tende a contrair-se fortemente; o segundo prevê sua permanência no estágio atual, o que requer modernização e forte articulação entre os agentes formadores de cadeia; o terceiro cenário, menos provável de ocorrer, é aquele em que deverá haver um esforço global, à semelhança do que ocorreu quando da grande expansão da cajucultura regional, na década de 70. Por tanto, porém deverá e a eficácia técnica, econômica e social.
MIDWIVES' COMPLIANCE WITH THE USE OF PERSONAL PROTECTIVE EQUIPMENT IN EFFORTS TO PREVENT POST-COVID-19 IN THE KLINIK MANDIRI BIDAN SETIA PALU CITY
Authors: Jufri Muhammad , Amalinda Finta , Hardianti Sri 
Published: January 2024

Personal protective equipment (PPE) must be used to avoid work accidents. Midwives have a considerable risk of contracting the disease because midwives have contact with the body fluids of pregnant/mother who gives birth, such as blood and amniotic fluid. The purpose of this research was to determine the compliance of midwives with the use of personal protective equipment in efforts to prevent post-COVID-19 in the Klinik Mandiri Bidan Setia Palu City. This research employs a type of research with a qualitative approach. The number of informants is five informants. The data was collected through in-depth interviews, direct observation, and documentation. The results of this research show that midwives are cheerful and obedient in using personal protective equipment. Midwives have a positive attitude toward using personal protective equipment because PPE is the need of every individual and must be obeyed for the benefit of all. According to Standard Operating Procedure, midwives comply with personal protective equipment. It is recommended that midwives in The Klinik Mandiri Bidan Setia Palu city always increase awareness of the disease by using complete PPE.
PELAKSANAAN PEMBELAJARAN DI MA DAN MTs AISYIYAH PALEMBANG
Authors: Aulia Ifa , Sumah Astrid Sri Wahyuni 
Published: January 2024

The use of learning models can help realize an effective learning process, but whether all teachers in the online or face-to-face learning process are limited to implementing learning models. The purpose of this study was to determine the methods and models of learning as well as what obstacles in the application of learning models during face-to-face were limited. The subjects in this study were Integrated Biology and Science teachers at MA and MTs Aisyiyah Palembang. While the samples of this study were one Biology teacher at MA Aisyiyah Palembang and two Integrated Science teachers at Mts Aisyiyah Palembang. Data collection techniques using observation, interviews and documentation. The results of this study are the learning methods in MA and MTs Aisyiyah Palembang, namely the lecture, discussion, question and answer and scientific methods. While the demonstration method is not applied. The learning models used by biology teachers at MA and MTs Aisyiyah Palembang are the Discovery Learning, Program Based Learning and PjBL models. The problem is that the teacher has difficulty managing the time, that is, one hour lesson is only 30 minutes, so it is difficult to apply the model syntax. So the solution is that the teacher must be creative in choosing the right model and have skills in managing the class so that learning objectives can be implemented.
Keywords: Learning Methods and Models, Biology Teachers, Obstacles in the application of learning models
Dynamics of Crop Diversification in Midlands of Kerala, India
Authors: Aiswarya G. B.  , Kshirsagar P. J.  , Banekol S. S.  , Bhosale S. S.  , Sawant M. S.  
Published: January 2024

Aims: This study presents the extent of crop diversification as well as the reasons in the three districts of Kerala state; Thiruvananthapuram, Kottayam and Kannur which falls in the midland region of Kerala.
Methodology: Secondary data on area under cultivation of various crops for the time period of 2005-06 to 2020-21 was subjected to analysis using Simpson Index, Modified Entropy Index and Markov chain analysis.
Results: Kannur was found to be highly diversified with high value of Simpson Index of around 0.79 followed by Thiruvananthapuram with SI of around 0.74. Transitional probability matrix of Thiruvananthapuram revealed that coconut, spices and condiments retained more area in the district followed by non-food crops with an area retention. Non-food crops retained highest area followed by coconut, spices and condiments in Kottayam. More area occupying crop in Kannur was found to be non-food crops followed by coconut, spices and condiments. However, overall scenario in midland region showed that more area was occupied by non-food crops followed by coconut, spices and condiments.
Conclusion: The period from 2005-06 to 2020-21 showed changing pattern of acreage distribution in the three selected districts of Kerala with a declining trend in total cropped area and shift from food crops to non-food crops.
Identification of early signs of change/mental disorders in puerpera to promote self-care / Identificação de sinais precoces de alteração/ transtornos mentais em puérperas para promoção do autocuidado
Authors: Silva Jéssica Kelly Alves Machado da , Santos Amuzza Aylla Pereira dos , Pontes Crislane de Oliveira , Silva Jovânia Marques de Oliveira e , Nascimento Yanna Cristina Moraes Lira , Santos Clarice Isabel Rosa dos 
Published: January 2024

Objetivo: identificar sinais precoces de alterações e/ou transtornos mentais em puérperas para promoção do autocuidado. Método: a população estudada foram puérperas atendidas na unidade básica de saúde. Resultados: as puérperas participantes enquadram-se como mulheres em idade reprodutiva, classificadas como mães adolescentes e mães adultas jovens. São mulheres que reconhecem a necessidade da prática do autocuidado, mas que possuem alguns entraves ligados às mais diferentes realidades e cotidiano em que estas estão inseridas, tornando fatores de risco para transtornos/alterações mentais durante o ciclo gravídico-puerperal. Conclusões: a efetivação da assistência integral à saúde das mulheres, ocorridas durante o pré-natal, parto e nascimento, são condições essenciais para a prevenção de transtornos e doenças mentais ocorridos numa fase tão ímpar que é o período puerperal.
Mechanical and surface properties of polysulfide‐based polyurea modified with aminoethylaminopropyl poly(dimethylsiloxane)
Authors: Quan Yi Wu , Wang Qing Jun , Fang Jiang Ling , Chen Qing Min 
Published: November 2002

AbstractA series of polysulfide‐based polyureas with different siloxane contents were synthesized, and they were based on isophorone diisocyanate, liquid polysulfide oligomer, aminoethylaminopropyl poly(dimethyl siloxane) (AEAPS), and 2,5‐diamino‐3,6‐dimethylmercapto‐toluene. The mechanical and surface properties were investigated with attenuated total reflectance Fourier transform infrared spectroscopy, surface contact angles, electron spectroscopy for chemical analysis, and stress–strain analysis. Siloxane was enriched on the surfaces of these elastomers, and the tensile properties of the elastomers did not change markedly with the AEAPS modification. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 584–588, 2003
Synthesis of novel reactive coalescing agents and their application in a latex coating
Authors: Lahtinen Maarit , Glad Essi , Koskimies Salme , Sundholm Franciska , Rissanen Kari 
Published: November 2002

AbstractThe syntheses and the performance of five glycidyl compounds as novel reactive coalescing agents are presented. The reactive coalescing agents were synthesized with moderate yields, structures were verified using spectroscopic methods, and the properties of glycidyl compounds such as boiling points and evaporation rates were measured. The applicability of five glycidyl compounds as reactive coalescing agents was tested in characterized carboxyl functional latex. Properties like pendulum hardness, gloss, and efficiency of the glycidyl compound to reduce the minimum film‐formation temperature (MFFT) of the latex were measured from the cured latex films. The application test results were compared to the commercial nonreactive coalescing agent, Nexcoat™ 795. The films with synthesized reactive coalescing agents with carboxyl functional latex were found to have good pendulum hardness and excellent gloss. Also, the efficiency of three glycidyl compounds in lowering the MFFT of the latex was competitive with the commercial coalescing agent. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 610–615, 2003
Utilization of lignocellulosic fibers in molded polyester composites
Authors: Hassan Mohammad L. , Nada Abd‐Alla M. A. 
Published: November 2002

AbstractUsing rice straw, bagasse, and cotton stalk fibers as reinforcing fillers in polyester composite was studied. The effects of fiber loading and fiber size on the modulus of rupture (MOR), modulus of elasticity (MOE), tensile strength, water absorption, and thickness swelling were investigated as well. The effect of esterification using maleic anhydride on the aforementioned properties also was studied. Ultraviolet light resistance and thermal behavior of the produced composites were also investigated. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 653–660, 2003