176 research outputs found
Música tradicional y popular en México. 77 Nueva Época (2005) enero-marzo. Antropología. Boletín Oficial del Instituto Nacional de Antropología e Historia
No full text- El canto llano y el canto de órgano en la música novohispana por Juan Manuel Lara Cárdenas. - El cambio sonoro de la música sacra. Algunos ejemplos entre los pueblos indígenas por Camilo Raxá Camacho Jurado. - “¿Quién soy yo para saber más que los antepasados?” por Sergio Navarrete Pellicer. - Los contextos simbólicos y sociales de la música indígena del Noroeste de México por Víctor Acevedo Martínez. - El mitote entre los pames de San Luis Potosí por María Eugenia Jurado. - Los sonidos del huentli. La música de viento: su simbolismo, su función ritual y terapéutica entre los nahuas de Morelos por Ulises Julio Fierro Alonso. - La “invención” de la música indígena de México por Marina Alonso Bolaños. - El mariachi tradicional en contexto: la fiesta cora del “equinoccio de otoño” en Santa Teresa (Kueimarutse'e) por Jesús Jáuregui. - El corrido minero de la sierra por Daniela A. Gaxiola. - La música popular en Yucatán por Manuel Álvarez Boada. - ¿Bruta, ciega y sordomuda?: relaciones de género e identidad en canciones populares comerciales por Alberto Zárate Rosales. - Música, mujeres y té de limón: charla en una tarde lluviosa con Henrietta Yurchenco por Benjamín Muratalla. - A Spiral Way: una historia del fonógrafo por Carlos Ruiz Rodríguez
Differential coping capacities underlie the overall resistance of temperate seagrasses to herbivory [Dataset]
No full textThe data is presented in 3 separate data sheets corresponding to the three studied species. The table below indicates the name of the datasheet, species of interest and the responsible authors.
File name: posi.txt, Species: Posidonia oceanica, Responsible author: Teresa Alcoverro & Timothy Smith -- File name: cymo_funct.txt, Species: Cymodocea nodosa, Responsible author: Marta Pérez, Javier Romero & Neus Sanmartí -- File name: zost.txt, Species: Zostera noltei, Responsible author: Francesca Rossi
All the files contain information on the sea urchin density, canopy height (leaves length) and shoot density of seagrasses. Below are detailed the variables in the files and the units when necessary: Species: refers to the experimental species used. Each .txt file refers to one of the three seagrass species studied; i.e., Posidonia oceanica, Cymodocea nodosa and Zostera noltii. Time: Categorical variable referring to the sampling time for each experiment. Days: Elapsed number of days from the beginning of the experiment. Cage or replicate: Number relating to the experimental replicates. Replicates can be understood as controlled plots / patches of the different seagrass species where urchins were manipulated. Sea_urchin_density_ind_5625cm2: Number of sea urchins in experimental plots. Canopy_height_cm: Leaves length in cm measured within experimental plots. Shoot_density_shoot_m2: Measured as the number of shoots per square meter and referred to experimental plots. The R script presented shows the workflow for transforming and analysing the collected data.Ministerio de Ciencia, Innovación y Universidades: Proyectos Generación de Conocimiento CTM2017-86695-C3-1-R. -- Ministerio de Ciencia, Innovación y Universidades: Proyectos Generación de Conocimiento CTM2017-86695-C3-3-R. -- Ministerio de Ciencia, Innovación y Universidades: Ramón y Cajal RYC2021-033650-I. -- Australian Research Council: Discovery Early Career Research DE200100683With the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S).Peer reviewe
La música popular en Yucatán. Antropología. Boletín Oficial del Instituto Nacional de Antropología e Historia: Música tradicional y popular en México. Num. 77 Nueva Época (2005) enero-marzo
No full textBaqueiro Foster, Jerónimo, “El desarrollo musical de Tabasco”, en Francisco J. Santamaría, Introducción a la antología musical de Tabasco, Villahermosa, Gobierno del Estado de Tabasco, 1985, pp. 36-75.Barrera Vásquez, Alfredo, El libro de los cantares de Dzitbalché, Mérida, Ayuntamiento de Mérida, 1980, pp. 7-29.Civeira Taboada, Miguel, Sensibilidad yucateca en la canción romántica, 2 tt., Toluca, Gobierno del Estado de México, 1978.Jardow-Pedersen, Max, “La música maya: producción del significado musical en el oriente del Estado de Yucatán”, en Sabiduría popular, Zamora, Michoacán, 1983, pp. 268-275.Moreno Rivas, Yolanda, Historia de la música popular mexicana, México, Conaculta / Alianza, 1989, pp. 99-114.Rivera y R., Roberto, Los instrumentos musicales de los mayas, México, SEP/INAH, 1980, pp. 5-46.Ruiz-Carvalho de Baqueiro, Eloísa, Tradiciones, folklore, música y músicos de Campeche, Campeche, Gobierno del Estado de Campeche, 1970, pp. 45-60
Cognitive and Non-cognitive Predictors of Norm-Referenced and Everyday Math Performance in Community College Students
No full textBoth cognitive and non-cognitive factors are known to predict math outcomes, including language, working memory, spatial ability, math anxiety, and self-efficacy. While many studies have looked at these factors separately, few have examined how such skills work together to predict math. Additionally, most prior work focuses on children or university students, and little is known about the community college population. Most prior work also focuses on norm- referenced measures of computational math as outcomes, and much less is known about everyday math, such as financial or health numeracy skills often needed in daily life in adulthood. The present study evaluates the role of key cognitive and non-cognitive factors related to math ability, including their unique and interactive predictive effects, and whether these effects differ across norm-referenced and everyday math outcomes in community college students. It was hypothesized that each predictor would have a significant relationship with both math outcomes, that those relationships would be uniquely predictive, and that the predictors would interact with one another beyond their individual effects. Results showed that all cognitive and non-cognitive factors were significantly related to both math outcomes. Spatial Skill, Language, and Math Anxiety were uniquely predictive of both types of math performance. Working Memory was uniquely predictive of Everyday Math performance only, and Performance Expectancy was not uniquely predictive of either math outcome. Hypotheses regarding interactions of these factors were generally not supported. Overall, this study elucidates how key cognitive and non-cognitive factors are differentially related to everyday vs. computational math. Importantly, this study uniquely combines several key cognitive and non- cognitive factors, ultimately elucidating how expected relationships between math and it’s predictors differ when all predictors are considered together
Integrating mathematical modeling into synthetic biology education: a comprehensive approach through webinars and syllabus development
No full text[EN] Mathematical modeling is a fundamental aspect of synthetic biology, enabling precise design and analysis of biological systems. To enhance students' understanding of this critical topic, we developed a series of webinars aimed at teaching mathematical modeling to iGEM teams. These webinars were initially created to maintain student engagement during a period of restricted lab access but quickly demonstrated their value as an effective educational tool. The success of these webinars highlighted the suitability of mathematical modeling as a topic well-suited to both onsite and online learning environments. Recognizing this, we expanded the content into a comprehensive syllabus for undergraduate courses in synthetic biology at the Universitat Polit & egrave;cnica de Valencia in Spain and Universidad de las Fuerzas Armadas-ESPE in Ecuador. The course now serves as a core component of synthetic biology education, offering students a robust framework for understanding and applying mathematical models. It includes a series of lectures, practical exercises, and case studies, all designed to deepen students' knowledge and skills in this essential area. To support educators and students, we have also developed a deck of slides and example scripts that provide practical examples and reinforce the concepts taught in the course. This manuscript presents the development, implementation, and impact of these educational initiatives, demonstrating how mathematical modeling can be effectively integrated into synthetic biology curricula to prepare students for real-world challenges in the field.The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This research was funded by MCIN/AEI/10.13039/501100011033 grant
numbers PID2020-117271RB-C21 and PID2023-151077OB-I00. YB gives thanks to Universitat Politecnica de Valencia (Grant PAID-10-21 Acceso al Sistema Espanol de Ciencia e Innovacion), and Secretaria de Educacion Superior, Ciencia, Tecnologia e Innovacion-Ecuador (Scholarship Convocatoria Abierta 2011).Boada-Acosta, YF.; Beluzán-Flores, FJ.; Vignoni, A. (2024). Integrating mathematical modeling into synthetic biology education: a comprehensive approach through webinars and syllabus development. Frontiers in Education. 9. https://doi.org/10.3389/feduc.2024.1486293S
Measuring the Scatter in the Cluster Optical Richness-Mass Relation with Machine Learning
No full textThe distribution of massive clusters of galaxies depends strongly on the total cosmic mass density, the mass variance, and the dark energy equation of state. As such, measures of galaxy clusters can provide constraints on these parameters and even test models of gravity, but only if observations of clusters can lead to accurate estimates of their total masses. Here, we carry out a study to investigate the ability of a blind spectroscopic survey to recover accurate galaxy cluster masses through their line-of- sight velocity dispersions (LOSVD) using probability based and machine learning methods. We focus on the Hobby Eberly Telescope Dark Energy Experiment (HETDEX), which will employ new Visible Integral-Field Replicable Unit Spectrographs
(VIRUS), over 420 degree2 on the sky with a 1/4.5 fill factor. VIRUS covers the blue/optical portion of the spectrum (3500 - 5500 ��), allowing surveys to measure redshifts for a large sample of galaxies out to z < 0.5 based on their absorption or emission (e.g., [O II], Mg II, Ne V) features. We use a detailed mock galaxy catalog from a semi-analytic model to simulate surveys observed with VIRUS, including: (1)
Survey, a blind, HETDEX-like survey with an incomplete but uniform spectroscopic selection function; and (2) Targeted, a survey which targets clusters directly, obtaining spectra of all galaxies in a VIRUS-sized field. For both surveys, we include realistic uncertainties from galaxy magnitude and line-flux limits. We benchmark both surveys against spectroscopic observations with \perfect" knowledge of galaxy line-of-sight velocities. With Survey observations, we can recover cluster masses to ~ 0.1 dex which can be further improved to < 0.1 dex with Targeted observations. This level of cluster mass recovery provides important measurements of the intrinsic scatter in the optical richness-cluster mass relation, and enables constraints on the key cosmological parameter, ��8, to < 20%.
As a demonstration of the methods developed previously, we present a pilot survey with integral field spectroscopy of ten galaxy clusters optically selected from the Sloan Digital Sky Survey's DR8 at z = 0.2 ��� 0.3. Eight of the clusters are rich (�� > 60) systems with total inferred masses (1.58 -17.37) ��1014 M�� (M200c), and two are poor (�� < 15) systems with inferred total masses ~ 0.5 �� 1014 M�� (M200c). We use the Mitchell Spectrograph, (formerly the VIRUS-P spectrograph, a prototype of the HETDEX VIRUS instrument) located on the McDonald Observatory 2.7m telescope, to measure spectroscopic redshifts and line-of-sight velocities of the galaxies in and around each cluster, determine cluster membership and derive LOSVDs. We test both a LOSVD-cluster mass scaling relation and a machine learning based approach to infer total cluster mass. After comparing the cluster mass estimates to the literature, we use these independent cluster mass measurements to estimate the absolute cluster mass scale, and intrinsic scatter in the optical richness-mass relationship. We measure the intrinsic scatter in richness at fixed cluster mass to be ��M���� = 0.27 �� 0.07 dex in excellent agreement with previous estimates of ��M���� ~ 0.2 ��� 0.3 dex. We discuss the importance of the data used to train the machine learning methods and suggest various strategies to import the accuracy of the bias (offset) and scatter in the optical richness-cluster mass relation. This demonstrates the power of blind spectroscopic surveys such as HETDEX to provide robust cluster mass estimates which can aid in the determination of cosmological parameters and help to calibrate the observable-mass relation for future photometric large area-sky surveys
An Automated Approach to the Study and Classification of Colliding and Interacting Galaxies
No full textColliding galaxies are perhaps the greatest events changing and evolving our Universe. Consequently, the need for an understanding of how that interaction originated is very important. This thesis presents a framework in which the study of these events can be conducted in a timely and efficient manner. A genetic algorithm coupled with an initial conditions generator, a physics engine and an analysis package performs an automated search to visually match an unknown galactic interaction with a known event, thus providing the starting conditions that created such an interaction
Design and construction of a magneto-rheological brake Rotational Didactic
No full textEn los últimos años la universidad ha realizado importantes avances en el estudio de fluidos magneto-reológicos, mediante el estudio de propiedades del fluido y el desarrollo de amortiguadores magneto-reológicos, ampliando el campo de acción de esta tecnología se pueden desarrollar válvulas de control automatizado, frenos, embragues, sistemas de control de vibración, y direcciones inalámbricas. Mediante el presente proyecto, se pretende ampliar el conocimiento sobre los fluidos magneto-reológicos, incursionando en su aplicación a frenos rotacionales, utilizando resultados de estudios anteriores en fluidos MR, para diseñar y construir un prototipo de freno, de esta forma dar continuidad y orientación a esta línea de investigación, a través de los hallazgos que el desarrollo del proyecto pueda presentar.In recent years the university has made significant advances in the study of magneto- rheological fluids , by studying fluid properties and the development of magneto -rheological dampers , broadening the scope of this technology can be developed valves automated control brakes , clutches, vibration control systems , and wireless addresses . Through this project , it is to expand the knowledge of the magneto- rheological fluids , dabbling in its application to rotational brakes, using results of previous studies on MR fluids , to design and build a prototype brake , thus giving continuity and guidance this line of research , through the findings that the project may present
Rèpliques d'instruments científics : entre ciència i tècnica
No full textThe scientific instrument is an intellectual fossil. It allows, through its study,
to understand its function in the experimentation area. But beyond this, there is also a
technical reading. Its goal is the analysis of piece, making an orderly reading. For this
the author proposes to study parameters like the technical tradition of the moment,
that of his constructor, the aesthetic style, its form or its function. This process allows
to rescue paleotechniques, to verify the artifact performances and to relate it with its
social environment
Contribución al conocimiento de los Speophilus del grupo kiesenwetteri Diek
No full textThe author has studied the group kiesenwetteri of the genus Speophilus (Col. Catopidae), endemic of Catalogna (Spain). The paper comprises a geographical and geological analysis of the by this group colonised massifs, with a study on the geological isolation of the species and a faunistic study of the 5 actually known forms, one of which is new
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