Conceptual Model for the Replacement of the Horn of a Nineteenth Century Phonograph     

Beatriz Marin  Maria Carmen Bachiller 《文物保护研究》2013,58(4):240-248

ABSTRACT

3D printing of missing parts of a cultural heritage artifact opens many possibilities and extends the challenges in the processes of intervention on cultural heritage assets. However, restoring these objects may not only mean the replacement of a missing element from its esthetic point of view, but restoring the function for which objects were created. In these processes, the replica of the object must be exact and of quality, but also specific. In this sense, the presented work is a multi-disciplinary attempt to reproduce the missing horn of a phonograph dated to the late nineteenth century. This phonograph belongs to the collection of the ‘Vicente Miralles Segarra’ Telecommunication Museum of the Universitat Politècnica de València. The objective was to recover its esthetic, didactic, and functional levels, i.e restoring its ability to emit sound. To this end, several models were printed with different materials, and the quality of the recorded sound with the different horns was evaluated, assessing their similarity to that obtained from an original horn.  相似文献   

PROFESSIONAL READING     

Beatriz F. Fernandez  Anne-Marie Deitering  Samantha Schmehl Hines  James Watson  Melissa Aho 《Public Services Quarterly》2013,9(3-4):209-219

  相似文献   

Las concepciones de los padres sobre el desarrollo: Teorías personales o teorías culturales     

Beatriz Triana 《Infancia y Aprendizaje》2013,36(54):19-39

Resumen

Este artículo ofrece un modelo teórico para explicar el origen de las concepciones de los padres sobre la educación y el desarrollo, y cómo éstas se plasman en la mente de los padres. Se postula que la cultura ofrece un amplio bagaje de concepciones que se transmiten mediante las interacciones que establecen los sujetos en los contextos sociales próximos. No obstante, el papel de la cultura queda regulado por los mecanismos de elaborarcíón de la información que caracterizan el procesamiento humano. Esto se demuestra al analizar, a partir de un conjunto de teorías de gran raigambre cultural, las mezclas coherentes de teorías que asumen los padres. Los objetivos que se persiguen son: a) Elaborar un cuestionario para estudiar las teorías; y b) analizar el papel de los contextos sociales próximos en la selección de las teorías que asumen los padres, destacando el nivel educativo y profesional de los padres así como la zona donde residen, como variables determinantes del tipo de teoría/s que éstos seleccionan.  相似文献   

El concepto de infancia en nuestra sociedad: una investigación sobre teorías implícitas de los padres     

Beatriz Triana  M.a José Rodrigo 《Infancia y Aprendizaje》2013,36(31-32):157-171

Resumen

Las teorías implícitas que mantienen los padres respecto a sus hijos recibieron un análisis empírico sistemático. Se seleccionaron varias teorías cuyo origen histórico es bien conocido: homúnculo, innatista, ambientalista, voluntarista, constructivista, médica y roussoniana. A partir de diversos estudios normativos se establecieron: a) el dominio de proposiciones de cada teoría; b) su tipicidady polaridad, y c) el grado de estabilidad de tales índices. De modo convergente, se utilizó una técnica cronométrica que halló una relación sistemática entre latencia de verificación, consistencia de juicios de verdad y tipicidad de las proposiciones. Por último, se comprobó la presencia y consistencia de las teorías implícitas en el sistema conceptual de los padres, observándose acusadas preferencias por las teorías constructivista, ambientalista y voluntarista.  相似文献   

Development and Validation of a Scale to Assess Students’ Attitude towards Animal Welfare     

Beatriz Mazas  Mª Rosario Fernández Manzanal  Francisco Javier Zarza  Gustavo Adolfo María 《International Journal of Science Education》2013,35(11):1775-1799

This work presents the development of a scale of attitudes of secondary-school and university students towards animal welfare. A questionnaire was drawn up following a Likert-type scale attitude assessment model. Four components or factors, which globally measure animal welfare, are proposed to define the object of the attitude. The components are animal abuse for pleasure or due to ignorance (C1), leisure with animals (C2), farm animals (C3) and animal abandonment (C4). The final version of the questionnaire contains 29 items that are evenly distributed among the four components indicated, guaranteeing that each component is one-dimensional. A sample of 329 students was used to validate the scale. These students were aged between 11 and 25, and were from secondary schools in Aragon and the University in Zaragoza (Aragon's main and largest city, located in NE Spain). The scale shows good internal reliability, with a Cronbach's alpha value of 0.74. The questionnaire was later given to 1,007 students of similar levels and ages to the sample used in the validation, the results of which are presented in this study. The most relevant results show significant differences in gender and level of education in some of the components of the scale, observing that women and university students rate animal welfare more highly.  相似文献   

Context Effects on Children's Use of Language     

He´ctor Pe´Rez Prieto  Fritjof Sahlstro¨M  Finn Calander  Marie Karlsson  Mia Heikkila¨ 《Scandinavian Journal of Educational Research》2013,57(1):43-62

The sweeping changes in Swedish society in the 1990s, with extensive decentralisation, privatisation and cutbacks in the public sector, implied quite new conditions for the realisation of the aim of pre-school and school as a meeting place for children from different backgrounds. This article discusses some of these changes and their implications, through a study of parent's choice of pre-school care facility in the city of Uppsala. The main data source is a survey study among 1584 mothers of children born in 1995. The results show that parents' use of the right to choose pre-school facility is economically, socially and culturally segregated; the patterns of choice are construed in relation to residential areas but are not a simple effect of housing segregation. The choice of pre-school facility in Uppsala is thus a practice that creates specific conditions--socially and culturally homogenous private pre-school facilities--that make it virtually impossible for them to achieve the goal of being meeting places.  相似文献   

Morality in parents’ stories of preschool choice: narrating identity positions of good parenting     

Marie Karlsson  Annica Löfdahl  Héctor Pérez Prieto 《British Journal of Sociology of Education》2013,34(2):208-224

This article aims to contribute to our understanding of how moral aspects of parents’ choices of preschool play a part in the processes of marketisation and privatisation of childcare in Sweden. The paper explores parents’ narratives of preschool choice as moral claims of parental identities. The analysed data are based on a study of how parents make sense of their preschool choice during life-story interviews. Our results point out good parenting as having to do with making distinctions between what is ‘good and bad’ and ‘right and wrong’ regardless of whether the choices concern preschools or the behaviour of preschool teachers and parents. Culturally available discourses become visible through the making of these distinctions in ways that ultimately point to the subject position of parents as particular choosers as related to a prevailing discourse of parental responsibility.  相似文献   

Digital illiteracy: a challenge for 21st century teachers / El analfabetismo digital: un reto de los docentes del siglo XXI     

Beatriz Cortina-Pérez  Miguel Á. Gallardo-Vigil  M. Ángeles Jiménez-Jiménez  Juan M. Trujillo-Torres 《Cultura y Educación》2013,25(2):231-264

Resumen

El aprendizaje de la química requiere dominar los diferentes códigos mediante los que se representa gráficamente la organización espacial de las moléculas. Los alumnos deben no sólo aprender la nomenclatura de esos sistemas de representación, sino también sus reglas sintácticas, siendo capaces de traducir de un código o lenguaje a otro, y de decidir cuándo y con qué metas deben usar cada uno de esos sistemas de representación. Para investigar cómo proceden y qué dificultades tienen estudiantes universitarios de química para usar esos sistemas de representación realizamos dos estudios. En total participaron 201 estudiantes universitarios, 174 estudiantes argentinos de un primer curso de química orgánica y 27 estudiantes españoles de la carrera de Psicología, que respondieron a tareas escritas diseñadas específicamente para esta investigación.

Los resultados mostraron que en general los estudiantes de química utilizan los diferentes sistemas de representación de forma adecuada. Sin embargo, aunque son eficaces en los procesos de traducción, no lo son en cuanto a su uso estratégico dependiente del marco teórico-conceptual. Por otra parte, al presentarles en el segundo estudio una tarea sin contenido químico, pero gráficamente isomorfa a las tareas químicas, los estudiantes de química, a diferencia de los de psicología, cometían errores característicos como consecuencia de interpretar el problema con una tarea dentro de un sistema representacional químico. Se discuten también algunas de las implicaciones de los resultados para el aprendizaje y la enseñanza de la química en la universidad.  相似文献   

Reforms in higher education: The case of Chile in the 1980s   总被引：1，自引：0，他引：1  

Beatriz Fried  Mario Abuhadba 《Higher Education》1991,21(2):137-149

The impact of the 1981 reforms on the system of higher education in Chile is described and analyzed. The system has been diversified by the encouragement of private universities, the creation of professional institutes and the establishment of centers for technical formation. Changes in the funding system have, however, led to problems with student loan recovery and to private universities concentrating on subjects with low costs. Though the participation rate has greatly increased, the existence of empty places, especially in the newer private universities, is evidence of over-provision.  相似文献   

Experiences on the Design,Creation, and Analysis of Multimedia Content to Promote Active Learning     

Rengel  Raúl  Pascual  Elena  Íñiguez-de-la-Torre  Ignacio  Martín  María J.  Vasallo  Beatriz G. 《Journal of Science Education and Technology》2019,28(5):445-451

In an educational context, multimedia content can be created by the students, by the faculty, or by a third party. With the aim of improving the lab work, motivation, and active learning in introductory electronics courses, several innovative technologies and instructional strategies were considered involving these three possibilities: real-time screen capture, video recording with smartphones, and technical analysis of science fiction films. Factors such as ease of use, fast production, or no need of expensive tools were critical for the choice of these technologies, which were introduced on activities (lab sessions, collaborative work) where traditional strategies required too much time or could not be applied properly due to a large number of students and/or time constraints. We found that video lab reports made by the students using smartphones are a very adequate and straightforward assessment method, combining the advantages of oral assessment and written reports. The technical analysis of science fiction films proved to be helpful to reinforce the motivation of some students towards the subject, although it requires some degree of maturity to reach this end. Video tutorials made with screen capture technology proved to be easy to record and produce, and they constitute a fast and convenient way to produce new multimedia resources adapted to the specific needs of the subject.

  相似文献