Alexander Soifer. Competitions for young mathematicians: perspectives from five continents Autores: Chacón, Gerardo

“…Esta serie pone a disposición de la comunidad e investigadores interesados en la educación matemática (EM) las discusiones y presentaciones realizadas durante el 13th International Congress on Mathematical Education (ICME 13) realizado del 24 al 31 de Julio del 2016 en Hamburgo, y que reúne cada cuatro años un gran número de especialistas en EM.…”

Family Portrait Autores: Ferrer-Corredor, Enrique

“…I have been serving among men of his Majesty Charles III. A betrayal has put my name among his enemies."…”

Greater Thornbird Phacellodomus ruber (aves: Furnariidae) feeding biology in the Paraná River Floodplain, Argentina: (aves: Furnariidae) en el valle de inundación del río Paraná,... Autores: Alessio, Viviana, Beltzer, Adolfo

“…Prey sizes ranged between 0,1 mm to > 8 mm, most of them captured early during the day (IF). …”

Feeding behavior of the white-winged coot (Fulica leucoptera) along the middle Parana river inundation area, Argentina Autores: F. Olguin, Pamela

“…The article describes the feeding behavior of the white-winged coot (Fulica leucoptera) by analyzing the stomach contents of 15 individuals with the stereoscopic microscope set to different degrees of taxonomic resolution: trophic spectrum was integrated by 14 taxonomical entities (4 vegetables and 10 animals); trophic diversity by stomach (H) oscillated between 0 and 1,95; accumulative trophic diversity (Hk) was 2,55; relative importance index (RII) values were Paspalum repens 253, Polygonum accuminatum 104, Belostoma 78, among others; trophic niche amplitude by season (estimated by using the Levins index) was 0,72 for summer, 0,46 for spring, 0,8 for fall and 0,86 for winter; prey percentages by size depicted 82% for organisms between 0 and 10 mm; an intestinal coefficient average (R) was 2,84. …”

American Purple Gallinule Porphyrula martinica (Aves: Rallidae) feeding biology in the Middle Parana River flood-plain, Argentina Autores: Pamela F. Olguin

“…Resultant spectrum was composed by 16 taxonomical entities, 2 vegetable fractions and 14 animal fractions; trophic diversity by stomach (H) ranged between 0,5 and 1,23; accumulated trophic diversity (Hk) was 2,9; IRI values were as follows: Belostoma sp. 1241, Arachnida n.i. 1134, Paspalum repens 704, Polygonum accuminatum 574; seasonal trophic niche amplitude was 0,88 (summer), 0,7 (spring), 0,76 (fall), and 0,8 (winter); alimentary efficiency was 97,6%; prey sizes percentage was 66% for organisms ranging from 0 to 10 mm; and average intestinal coefficient was 2,72. …”

Spot-flanked Gallinule Porphyriops melanops (Aves: Rallidae) feeding biology in the Middle Parana River flood-plain, Argentina Autores: F. Olguin, Pamela

“…The resultant spectrum was composed by 10 taxonomical entities, 7 animal fractions and 3 vegetable fractions; trophic diversity by stomach (H) ranged between 0 and 1, while accumulated trophic diversity (Hk) was 2,57; main IRI values were as follows: Polygonum accuminatum 1204, Planorbidae 872 and Paspalum repens 451; alimentary efficiency was 97,5%; more frequent prey sizes oscillated between 0 and 10 mm; habitat preference was 2,4; and the average intestinal coefficient was 2,79.…”

Social representations and emergent practices of clients attending casinos in Merida, Yucatan Autores: Echeverría-Echeverría, Rebelín, Carrillo-Trujillo , Carlos, Fuentes-Gómez, José, Castillo-León, Teresita

“…The results split into three sections: 1) Going to the casino, which describes the different conceptions of these establishments, as well as game strategies used by consumers; 2) What others think about my gambling, depicting various comments and opinions of family members and friends about casino customers; and 3) New social practices and behavior, in which both are described, discussed and analyzed in the context of Merida urban dynamics.…”

La Sustainability: a powerful idea for humanity Autores: Zarta Avila, Plinio

“…Wis question has motivated me to study and write some initial lines that I want to refine, until reaching a greater depth in the subject to present my opinions to the consideration of the readers, until achieving the dynamics of the discussion that deserves the passion between the academic, the cognitive and the sensory in the life we lead.…”

La Coffee farmhouses as Colombian agro-industrial heritage at risk Autores: Santa Quintero, Ángela María

“…This article originates from one of the ffieldwork projects carried out during my academic studies for the master’s degree in Restoration of Architectural Monuments at the Pontifical Xavierian University of Bogotá. …”

Comparación de dos lámparas de fotocurado de luz led convencional vs valo en la profundidad de curado en un sistema resinoso forma-ultradent Autores: Ortiz Hernández, Darlin Yulieth, Quintero Ortega, Juan Sebastián

“…The lamp that offered the greatest depth of curing of the Forma Ultradent resin was the Valo, observing a statistically significant difference of (p <0.05) giving minimum values of 1.65mm in dentin and 2.85mm in enamel; maximum values of 1.90mm dentin and 3.0 enamel compared to the conventional minimum values of 1.65mm dentin and 2.60mm enamel; maximum values of 1.74mm dentin and 2.82mm enamel.…”

Necesidades Motivacionales de los Estudiantes del Grado Décimo y Once del Centro Educativo Bahía de Buenaventura Autores: Dueñas Barahona, Cristhel Nataly, Hurtado Gil, Daviana

“…The information was collected through the sociodemographic survey, which responded to the first specific objective of the research; Therefore, the motivational needs scale in adolescents (EM1) was used, in which it was obtained that the motivational needs that predominate in students of the tenth and eleventh grade is the need for power, followed by achievement and ending with affiliation. …”

Diseño e implementación de un prototipo de plataforma tipo tijera para el monte y desmonte de cajas de velocidades de cambio para vehículos de 500 kilogramos. Autores: Vargas Londoño, José Andrés, Reyes Naranjo, Fabián Alejandro

“…Subsequently, calculations and simulation analysis were carried out using SolidWorks software and fin was built to lift a load of up to 500 kg at a maximum height of 750 mm. ally a prototype…”

Pasantía en el ministerio de comercio industria y turismo Autores: Bonilla Triana, Omar Julián

“…Therefore, this project consists of the investigative approach referring to the presentation of the entity, its historical framework, its composition, and performance, in the same way the presentation of my functions that were developed during the internship, showing the capacities and abilities that were acquired throughout the work and learning process. …”

Productos De Gran Rentabilidad En El Banco Scotiabank Colpatria Autores: Muñoz Jimenez, Geraldynne Eliana

“…The proposal to be carried out is an internship job for the company Scotiabank Colpatria and the Antonio Nariño University, in order to obtain the respective qualification in the degree option that I must present as a requirement in my economics career, which will take place from the month of August of the year 2021 until the month of November of the same year. …”

Experiencia de vida pedagógica y de gestión de Luis Humberto Rodríguez Carvajal en la danza folclórica como eje transformador de vida en los estudiantes de las escuelas de formació... Autores: Rodríguez Carvajal, Luis Humberto

“…This research relates my experience lived from the pedagogical and management field in the processes of growth in folk dance as a transforming axis of life in the students of the training schools of the municipality of Facatativá; understood in the years 2006 to 2019 through qualitative methodology, with a narrative writing applying as a data collection tool the interview with students, instructors and secretaries of culture who were part of the process. …”

Caracterización De Los Hábitos Y Estilos Saludables En La Población Adulta En La Vereda Guadual Del Municipio De Supata Cundinamarca Autores: Murillo Ramos, Norly Mindrey, Saenz Nagles, Natalia Mindreth

“…Methodology: The study conducted in the village Guadual of the municipality of Supata Cundinamarca, in the adult population of the same is characterized by being in an age range of 18 to 95 years, being 13% youth, 52% adult and 35% in the course of life of old age, was a descriptive study, quantitative cut, It was a descriptive, quantitative, cross-sectional study and an observational part that helped to make a qualitative contribution to the population, by means of the FANTASTIC instrument and the strategy of the Cundinamarca government "I love myself and they want me to be responsible for my health", identifying the healthy lifestyles and habits of each person surveyed. …”

Aditamentos biselados en movimientos de extrusión en incisivos superiores: un análisis de elementos finitos Autores: Arrieta Montiel, Karina Cristina, Obredor Forero, Jessica Katerine, Cárdenas Franco, Andrea Del Pilar, Peña Calderón, Luis Hernando

“…The objective of the study was to analyze variations in tension and deformation in the maxilla, periodontal ligament (LPD), bone and upper incisors during extrusion with aligners using 3, 4 and 5mm beveled abutments in a finite element model (FEM). …”

Dentoalveolar changes caused by extraoral traction and bionator in class ii division 1. Systematic review Autores: Arias González, Angie Lizeth, Gomez Calvo, Melisa Paola, Polo Beltran, Liliana Carolina, Tamara Correa, Laura Vanessa

“…The A position with both appliances decreased significantly, this was measured differently with each approach: SNA was evaluated for the Bionator (°) and for traction, A-S´ (mm). Conclusion: Both approaches, Bionator and extra-oral traction could be used for Class II division 1 treatment, however, there is insufficient quality and up-to-date evidence in order to determine superior dentoalveolar changes between these two appliances.…”

Ague Autores: Rosado Jerez, Alberto Elias

“…The heritage of the weaving of the traditional Kankuama backpack, whose knowledge was transmitted for generations within my family circle, brings with it countless stories, of oral tradition, which set in me the desire to unveil this knowledge of the environment inhabited by those who they preceded me In equal measure, moving to the City of Bogotá implies the acquisition of an identity conditioned by the social dynamics of the city; Faced with this constant process of alienation, I ask myself simultaneously about the before and after, my memories and knowledge, and in this constant questioning I suspect both of one and the other. …”

Una Realidad Aparte_desde el color Autores: Sanchez Bernal, Nicolas

“…Because concerns are the ones that occupy the entire text; being this, the making-place, which I chose to reflect on. They are my wishes, and my wishes are for you PAINTWORK. …”