The Urban School Crisis in New Orleans: Pre- and Post-Katrina Perspectives     

Luis Mirón 《Journal of Education for Students Placed at Risk》2013,18(2-3):238-258

This article provides a case study of the Algiers Charter School Association, a new organization formed in the wake of Hurricane Katrina in New Orleans. The Association coordinated the start-up of charter schools on the West Bank of the city, a high-ground neighborhood that escaped the massive flooding that engulfed New Orleans. I situate the case study in the broader social, political, context of state takeover, rapid-fire school crisis and reform, and deepening privatization.  相似文献   

STRUCTURE OF PRIMARY MATHEMATICS TEACHER EDUCATION PROGRAMS IN SPAIN     

María C. Cañadas  Pedro Gómez  Luis Rico 《International Journal of Science and Mathematics Education》2013,11(4):879-894

Spain was 1 of the 17 countries that participated in the International Association for the Evaluation of Educational Achievement’s Teacher Education and Development Study in Mathematics (TEDS-M 2008). In this paper, we explore and describe the structure of Spanish primary mathematics teacher education programs. We analyzed the documents collected from the 48 sampled Spanish institutions that participated in TEDS-M. Our approach to the syllabus analysis focused on the established content dimension of curriculum in educators’ syllabi. These contents are structured into 4 knowledge domains—school mathematics, advanced mathematics, general pedagogy, and mathematics pedagogy—and categorized into subjects and topics. The results show that Spanish teacher education programs are diverse across institutions, but follow a basic structure that emphasizes the teaching of general pedagogy subjects.  相似文献   

Design and calibration of a drill-guided system by laser for structural strengthening of historic bridge     

Jose Herráez  Jose Luis Denia  Pablo Navarro  Luis Bosch  Ignacio Bosch 《Journal of Cultural Heritage》2013,14(3):248-253

Restoring the spans of a historic bridge requires installing tensors to ensure the structural and mechanical stability of the rows of stones that form the resistant body of the bridge. Once the positions where the structure-crossing tensors should be installed have been determined, the entry and exit points of each drill hole must be marked on both sides of the bridge. However, the exit point of each drill hole is not visible from the entry point, making it impossible to drill precisely. Here, we present a method based on a calibrated system that combines precision topography with laser technology. Using this method, drill holes longer than 12 m can be achieved with centimetric precision.  相似文献   

Linking university and industry: An organizational experience in Mexico     

Mario Waissbluth  Gustavo Cadena  Jose Luis Solleiro 《Research Policy》1988,17(6)

This paper describes the experience gained in the Center for Technological Innovation since its creation three years ago within the National Autonomous University of Mexico. By offering the services of locating clients, drafting and negotiating contracts, providing specialized information services, and project follow-up, the Center pursues the establishment of effective ties between University projects and industrial production. In so doing, its staff informally assumes the critical “dgate-keeper” and “entrepreneur” roles, not easily accepted in other areas of the University.The main difficulties encountered so far have been in developing interdisciplinary projects, providing due academic recognition for technological activities and extending knowledge about innovation throughout the University. On the other hand, a great advantage is the interest shown by the academic community; likewise is UNAM's stability and autonomy, structural characteristics which have stimulated the development of technically sound teams over several decades. To date, the Center has provided support services for 125 projects and has participated in establishing 44 contracts between the University and industry.  相似文献   

Open data visualizations and analytics as tools for policy-making     

Loni Hagen  Thomas E. Keller  Xiaoyi Yerden  Luis Felipe Luna-Reyes 《Government Information Quarterly》2019,36(4):101387

Government agencies collect large amounts of structured and unstructured data. Although these data can be used to improve services as well as policy processes, it is not always clear how to analyze the data and how to glean insights for policy making, especially when the data includes large volumes of unstructured text data. This article reports opinions found in “We the People” petition data using topic modeling and visual analytics. It provides an assessment of the usability of the visual analytics results for policy making based on interviews with data professionals and policy makers. We found that visual analytics have potentially positive impacts on policy making practices. Experts also articulated potential barriers regarding the adoption of visual analytics tools, and made suggestions. Potential barriers included insufficient resources in government agencies and difficulty integrating analytics with current work practices. The main suggestions involved providing training and interpretation guidelines along with the visual analytics tools. Major contributions of this study include: (1) suggesting viable visualization tools for analyzing textual data for policy making, and (2) suggesting how to lower barriers to adoption by increasing usability.  相似文献   

The effect of efficient professional development on the teaching of code-focused skills in beginner readers: exploring the impact of professional development intensity and coaching on student outcomes     

Martínez  Verónica  Castejón  Luis  González-Pumariega  Soledad 《Reading and writing》2022,35(7):1711-1730

Reading and Writing - Professional development (PD) of teachers working with students in the first years of learning to read is a privileged way of preventing initial reading difficulties and its...  相似文献   

English language teaching in public primary schools in Mexico: the practices and challenges of implementing a national language education program     

José Luis Ramírez Romero  Peter Sayer  Elva Nora Pamplón Irigoyen 《International journal of qualitative studies in education》2014,27(8):1020-1043

Over the past 15?years, many state governments in Mexico have initiated local programs to introduce English at the primary school level. In 2009, the Mexican Ministry of Education formalized the Programa Nacional de Inglés en Educación Básica (PNIEB) as part of the national curriculum, based on the argument that increasing the number of English speakers in Mexico is necessary for the country to be globally competitive and to follow the trend in other developing economies of augmenting English instruction in public education. This paper focuses on the implementation of PNIEB and the state programs that preceded it. The authors document the practices and challenges associated with the program based on data collected from interviews with the main stakeholders involved (students and parents, teachers, school principals, and program coordinators) and from classroom observations. The total data-set consisted of over 200 interviews and classroom observations spread over several years from 2008 to 2012. Several challenges are described, including the development of materials, the role of English in relation to other subject areas, and the training of teachers who often speak English but have uneven formal preparation. The status of the teachers, both as second-class citizens within the schools and the instability and irregularities with their contracts, was identified as the most significant challenge to the successful implementation of the programs.  相似文献   

Enhancing Students’ Learning Process Through Self-Generated Tests     

Marcos Sanchez-Elez  Inmaculada Pardines  Pablo Garcia  Guadalupe Miñana  Sara Roman  Margarita Sanchez  Jose Luis Risco 《Journal of Science Education and Technology》2014,23(1):15-25

The use of new technologies in higher education has surprisingly emphasized students’ tendency to adopt a passive behavior in class. Participation and interaction of students are essential to improve academic results. This paper describes an educational experiment aimed at the promotion of students’ autonomous learning by requiring them to generate test type questions related to the contents of the course. The main idea is to make the student feel part of the evaluation process by including students’ questions in the evaluation exams. A set of applications running on our university online learning environment has been developed in order to provide both students and teachers with the necessary tools for a good interaction between them. Questions uploaded by students are visible to every enrolled student as well as to each involved teacher. In this way, we enhance critical analysis skills, by solving and finding possible mistakes in the questions sent by their fellows. The experiment was applied over 769 students from 12 different courses. Results show that the students who have actively participated in the experiment have obtained better academic performance.  相似文献   

An adaptive controller for nonlinear teleoperators with variable time-delays     

Ioannis Sarras  Emmanuel Nuño  Luis Basañez 《Journal of The Franklin Institute》2014

In most real-life bilateral teleoperators the available physical parameters are uncertain and the communications exhibit variable time-delays. In order to confront these situations and only assuming that a bound of the time-delays is known, the present work reports an adaptive controller which ensures asymptotic convergence of both position errors and velocities to zero, provided that a sufficient condition on the control gains is met. Compared to previous related works that only treated constant time-delays, the stability analysis does not rely on the cascade interconnection structure of the local and remote nonlinear dynamics and the linear interconnection map. Instead, the paper employs a different Lyapunov candidate function that incorporates a strictly positive term, the local and remote position error. Some simulations, in free space and interacting with a rigid wall, and experiments, using two nonlinear manipulators, illustrate the performance of the proposed control scheme in the presence of uncertain parameters and variable time-delays.  相似文献   

Description of the finger mechanical load of climbers of different levels during different hand grips in sport climbing     

Jesús Morenas Martín  Vicente Luis Del Campo  Marta Leyton Román  Juan Miguel Gómez-Valadés Horrillo  Juan Santiago Gómez Navarrete 《Journal of sports sciences》2013,31(15):1713-1721

Abstract

Currently, direct empirical evidence exists about the amount of mechanical load that climbers apply to each finger during several hand grips specific to sport climbing, but not yet in a specific hanging position.

The objectives of this study are a) to draw and build a solid and rigid support that simulates the real action of a hand grip in a hanging position in sport climbing, to enable the measurement of the mechanical load endured by the fingers in a hanging position and in addition, b) to describe the distribution of mechanical load among fingers as a function of the level of climbing during different hand grips in a hanging position.

Thirty young male participants took part in the initial phase of reliability of the measurements, while another 64 male climbers participated in the subsequent study phase to check the relations between independent and dependent variables. The level of on sight climbing and the total practice experience were used to define the groups. The research task consisted of performing hanging positions on the created support in order to measure the mechanical load endured by the fingers in the three most characteristic hand grips in climbing (crimp, half crimp and slope). It has been concluded that the performance level of the climbers had no influence on the production of a pattern of differentiated finger mechanical load during the research task.  相似文献