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“El uso de la plataforma Richmond Spiral en ayuda a los y las estudiantes de primer año de educación media cuando aprenden gramática inglesa a través de la gamificación”
(Universidad de Chile, 2021)
indagación exploratoria, que indicaron preliminarmente una modificación positiva en la motivación y aprendizaje de los estudiantes del idioma inglés, a través de la metodología de la enseñanza de la gamificación utilizada...
ABSTRACT Teaching a second language presents serious difficulties, exacerbated during the current pandemic that has been reoriented through online technology. In this direction, alternative methods are sought, of a virtual nature that are familiar to current students and that can help motivate them in learning the English language. This project focused on learning English grammar through gamification, where 21 students from a first-year high school course of both genders participated, between 14 and 15 years of age from a scientific-humanist college. The methodology of the class was based on teaching with the help of gamification integrated into the Richmond Spiral platform, which allows exercises to confirm the level to reach the objective of each of the one hundred and sixty-eight tasks (in four versions), to later generate cut scores. From the point of view of the methodology, a pre-experimental, exploratory approach was chosen, using data collection techniques such as the questionnaire and observation. Once the required information had been collected and systematized, the most relevant findings of this exploratory inquiry were analyzed and reviewed, which preliminarily indicated a positive modification in the motivation and learning of English language students, through the teaching methodology of the English language. gamification used...
ABSTRACT Teaching a second language presents serious difficulties, exacerbated during the current pandemic that has been reoriented through online technology. In this direction, alternative methods are sought, of a virtual nature that are familiar to current students and that can help motivate them in learning the English language. This project focused on learning English grammar through gamification, where 21 students from a first-year high school course of both genders participated, between 14 and 15 years of age from a scientific-humanist college. The methodology of the class was based on teaching with the help of gamification integrated into the Richmond Spiral platform, which allows exercises to confirm the level to reach the objective of each of the one hundred and sixty-eight tasks (in four versions), to later generate cut scores. From the point of view of the methodology, a pre-experimental, exploratory approach was chosen, using data collection techniques such as the questionnaire and observation. Once the required information had been collected and systematized, the most relevant findings of this exploratory inquiry were analyzed and reviewed, which preliminarily indicated a positive modification in the motivation and learning of English language students, through the teaching methodology of the English language. gamification used...
Skew-Kappa distribution functions & whistler heat flux instability in the solar wind: the Core-Strahlo model
(Universidad de Chile, 2023)
Electron velocity distribution functions (eVDFs) in the solar wind exhibit ener getic tails and magnetic field-aligned skewness, attributed to secondary populations
such as the halo and strahl. Temperature anisotropy is also a commonly observed
suprathermal feature. Both skewness and anisotropy can provide energy for the
excitation of electromagnetic perturbations through the whistler heat flux instabil ity (WHFI) and the whistler-cyclotron instability, potentially altering the plasma
state through wave-particle interactions. The WHFI, in particular, is believed to
play a crucial role in regulating electron heat flux in the solar wind. In this work,
we introduce a novel approach to model the solar wind eVDF: the Core-Strahlo
(CS) model. This representation combines a bi-Maxwellian core and a suprather mal strahlo, modeled by a skew-Kappa distribution and representing the halo and
strahl electrons using a unified description. We demonstrate that the CS model ef fectively reproduces key characteristics of the solar wind eVDFs, with the advantage
of controlling skewness through a single parameter, δ. Using linear kinetic theory
and considering small skewness, we conduct a comprehensive stability analysis of the
parallel-propagating whistler mode and establish stability threshold conditions for
comparison with observational data.
We show that plasma states with distinct WHFI stability levels may exhibit iden tical electron heat flux values, q∥e. Therefore, systems with high q∥e values can be stable enough, so that the WHFI may not be able to effectively modify electron heat
flux values through wave-particle interactions. Consequently, skewness (a kinetic
property of the eVDF) emerges as a better indicator of instability compared to the
heat flux parameter (a plasma macroscopic quantity). Our study further investigates
anisotropic cases, revealing that the strahlo anisotropy is a more efficient source of
free energy for destabilizing the whistler mode compared to field-aligned skewness.
This suggests a greater role of anisotropic suprathermal populations in processes
governed by wave-particle interactions. We hope this study will motivate the devel opment of theoretical works exploring the dynamics of the halo and strahl using a
unified description. This approach could be especially valuable for addressing the
interaction between these populations as they move away from the Sun. Lastly, we
expect our results to find validation through electron measurements obtained from
current and upcoming solar wind missions...
Las funciones de distribución de velocidad de electrones (eVDF, por sus siglas en ingles) en el viento solar muestran colas energéticas y asimetría alineada con el campo magnético, atribuidas a poblaciones secundarias como el halo y el strahl. La...
Las funciones de distribución de velocidad de electrones (eVDF, por sus siglas en ingles) en el viento solar muestran colas energéticas y asimetría alineada con el campo magnético, atribuidas a poblaciones secundarias como el halo y el strahl. La...
Descripción ecográfica del aparato bicipital en equino Fina Sangre Inglés de Carrera en entrenamiento de 2 años de edad
(Universidad de Chile, 2016)
UNIVERSIDAD DE CHILE
FACULTAD DE CIENCIAS VETERINARIAS Y PECUARIAS
ESCUELA DE CIENCIAS VETERINARIAS
“DESCRIPCIÓN ECOGRÁFICA DEL APARATO
BICIPITAL EN EQUINO FINA SANGRE INGLÉS DE...
Departamento de Ciencias Clínicas UNIVERSIDAD DE CHILE FACULTAD DE CIENCIAS VETERINARIAS Y PECUARIAS ESCUELA DE CIENCIAS VETERINARIAS “DESCRIPCIÓN ECOGRÁFICA DEL APARATO BICIPITAL EN EQUINOS FINA SANGRE INGLÉS DE CARRERA EN...
Departamento de Ciencias Clínicas UNIVERSIDAD DE CHILE FACULTAD DE CIENCIAS VETERINARIAS Y PECUARIAS ESCUELA DE CIENCIAS VETERINARIAS “DESCRIPCIÓN ECOGRÁFICA DEL APARATO BICIPITAL EN EQUINOS FINA SANGRE INGLÉS DE CARRERA EN...
Concientización a niñas y niños chilenos de 10 a 12 años sobre clasificación y algoritmo Bayes ingenuo utilizando una extensión al Lenguaje Scratch
(Universidad de Chile, 2022)
Una de las áreas que ha tenido mayor éxito en Inteligencia Artificial (AI, por sus siglas en inglés) es Aprendizaje de Máquinas o Machine Learning (ML), debido a su utilidad para construir sistemas que detectan patrones. Más que solo automatizar...
Propuesta de diseño para procesos de reducción secundaria en proyecto mina Chuquicamata subterránea
(Universidad de Chile, 2016)
En la actualidad, el Proyecto Mina Chuquicamata Subterránea (PMCHS) es uno de los pilares para el futuro de la Corporación del Cobre de Chile (CODELCO), el cual contempla la construcción de una mina subterránea masiva bajo el rajo actual, explotada...
Cuidados generales en el manejo del traumatismo craneoencefálico grave: consenso latinoamericano
(Elsevier, 2020)
El traumatismo craneoencefálico grave (TCEg) continúa siendo prevalente en lapoblación adulta joven. Lejos de descender, su incidencia se mantiene elevada. Uno de lospilares en los que se asienta su tratamiento es evitar, detectar y corregir...
Severe traumatic brain injury (sTBI) remains prevalent in the young adult popula-tion. Indeed, far from descending, the incidence of sTBI remains high. One of the key bases oftreatment is to avoid, detect and correct secondary injuries of systemic origin, which aggra-vate the primary lesion. Much of this can be achieved by maintaining an adequate physiologicalmicroenvironment allowing recovery of the damaged brain tissue. General care measures arenonspecific actions designed to meet that objective. The available guidelines on the manage-ment of sTBI have not included the topics contemplated in this consensus. In this regard, agroup of members of the Latin American Brain Injury Consortium (LABIC), involved in the diffe-rent aspects of the acute management of sTBI (neurosurgeons, intensivists, anesthesiologists,neurologists, nurses and physiotherapists) were gathered. An exhaustive literature search wasmade of selected topics in the LILACS, PubMed, Embase, Scopus, Cochrane Controlled Regis-ter of Trials and Web of Science databases. To establish recommendations or suggestions withtheir respective strength or weakness, the GRADE methodology (Grading of Recommendations,Assessment, Development and Evaluation) was applied. Additionally, certain recommendations(included in complementary material) were not assessed by GRADE, because they constitute aset of therapeutic actions of effective compliance, in which it was not possible to apply thesaid methodology. Thirty-two recommendations were established, 16 strong and 16 weak, withtheir respective levels of evidence. This consensus attempts to standardize and establish basicgeneral care measures in this particular patient population....
Severe traumatic brain injury (sTBI) remains prevalent in the young adult popula-tion. Indeed, far from descending, the incidence of sTBI remains high. One of the key bases oftreatment is to avoid, detect and correct secondary injuries of systemic origin, which aggra-vate the primary lesion. Much of this can be achieved by maintaining an adequate physiologicalmicroenvironment allowing recovery of the damaged brain tissue. General care measures arenonspecific actions designed to meet that objective. The available guidelines on the manage-ment of sTBI have not included the topics contemplated in this consensus. In this regard, agroup of members of the Latin American Brain Injury Consortium (LABIC), involved in the diffe-rent aspects of the acute management of sTBI (neurosurgeons, intensivists, anesthesiologists,neurologists, nurses and physiotherapists) were gathered. An exhaustive literature search wasmade of selected topics in the LILACS, PubMed, Embase, Scopus, Cochrane Controlled Regis-ter of Trials and Web of Science databases. To establish recommendations or suggestions withtheir respective strength or weakness, the GRADE methodology (Grading of Recommendations,Assessment, Development and Evaluation) was applied. Additionally, certain recommendations(included in complementary material) were not assessed by GRADE, because they constitute aset of therapeutic actions of effective compliance, in which it was not possible to apply thesaid methodology. Thirty-two recommendations were established, 16 strong and 16 weak, withtheir respective levels of evidence. This consensus attempts to standardize and establish basicgeneral care measures in this particular patient population....
El diseño y la educación tecnológica en Chile
(Consejo Nacional de la Cultura y las Artes, 2014-12)
enseñanza primaria y secundaria. Sin embargo, en el escenario reciente donde la reforma educacional implementada a comienzos de los años noventa significó la instalación de la educación tecnológica como nueva área de conocimientos que reemplazó dentro del...
Habilidades de lectura de jóvenes al término de la secundaria: ¿qué se predice para su lectura en contextos universitarios?
(Universidad de Almería, 2020)
Se presentan los resultados y conclusiones derivados de un estudio realizado sobre un corpus de datos provenientes de la prueba estandarizada usada en Chile para seleccionar a los estudiantes que quieren acceder al nivel universitario, denominada...
This paper presents results and conclusions derived from a study conducted on a corpus of data from the standardized test used in Chile to select students who want to access college. This test is called the University Selection Test-Language. The data correspond to eight applications, period 2005 to 2012. The corpus is composed of three elements: a group of stimulus texts (expository and argumentative, whose discursive characteristics allow them to be assimilated to academic texts), the items associated with each text, plus the statisticians (difficulty and omission) that account for how many students answered the key and how many omitted. The analysis of this information allows for the verification that the graduates of secondary education present a low level of reading comprehension, especially in the processing of the textual surface to obtain implicit information, such as: interpretation of the discursive perspective adopted by the issuer in the development of the topic; recognition of the internal organization in an expository text or identification of the thesis that arises in an argumentative text. These results are consistent with other research that shows difficulties in reading comprehensively for young people who have finished their secondary education....
This paper presents results and conclusions derived from a study conducted on a corpus of data from the standardized test used in Chile to select students who want to access college. This test is called the University Selection Test-Language. The data correspond to eight applications, period 2005 to 2012. The corpus is composed of three elements: a group of stimulus texts (expository and argumentative, whose discursive characteristics allow them to be assimilated to academic texts), the items associated with each text, plus the statisticians (difficulty and omission) that account for how many students answered the key and how many omitted. The analysis of this information allows for the verification that the graduates of secondary education present a low level of reading comprehension, especially in the processing of the textual surface to obtain implicit information, such as: interpretation of the discursive perspective adopted by the issuer in the development of the topic; recognition of the internal organization in an expository text or identification of the thesis that arises in an argumentative text. These results are consistent with other research that shows difficulties in reading comprehensively for young people who have finished their secondary education....
Desarrollo de un plan de negocios para una cadena de mini-centros, dedicados a la práctica de la lengua inglesa
(Universidad de Chile, 2013)
, perfeccionar y practicar periódicamente, la fluidez del idioma inglés, en adultos entre 30 y 50 años de edad, quienes residen en barrios acomodados, ZODUC (zonas de desarrollo urbano condicionado), en las afueras de Santiago. Además de, ofrecer talleres lúdicos...
Circovirus porcino: un virus pequeño que genera un gran problema
(Universidad de Chile, Facultad de Ciencias Veterinarias y Pecuarias, 2007-12)
porcino: un virus pequeño que genera un gran problema
Historia del circovirus porcino
El circovirus porcino (PCV, del inglés porcine
circovirus) fue descrito por primera vez por inves-
tigadores alemanes en el año 1974, como un virus
contaminante de la...
como Síndrome Multisistémico de Desmedro Postdes- tete (PMWS, del inglés Postweaning Multysistemic Wasting Syndrome) (Clark, 1997). Esta enfermedad ya era conocida desde 1991 en Canadá, pero se con- sideraba de etiología desconocida (Harding, 1996...
como Síndrome Multisistémico de Desmedro Postdes- tete (PMWS, del inglés Postweaning Multysistemic Wasting Syndrome) (Clark, 1997). Esta enfermedad ya era conocida desde 1991 en Canadá, pero se con- sideraba de etiología desconocida (Harding, 1996...