Computadores,comunicación y educación: una colaboración internacional en la intervención e investigación educativa     

Alberto Rosa  Luis C. Moll 《Infancia y Aprendizaje》2013,36(30):1-17

Resumen

El presente articulo describe y justifica teóricamente una actividad educativa que induye el uso de microcomputadores a través de una comunicación telemática. Esta actividad consiste en la redacción de una revista bilingüe (inglés-español) en la que colaboran niños de diversas culturas. A través de esta actividad se trabajan temas como la «alfabetización informàtica», la composición de textos y los idiomas. Esta intervención educativa viene acompañada de un intercambio de información científica a través de una red académica de comunicaciones telemáticas para el intercambio de información científica. El marco teórico en el que se desarrolla este trabajo se deriva del de la psicología vygotskiana y de alguno de sus desarrollos posteriores.  相似文献   

上海浦东新区城市生活垃圾收运路线优化研究   总被引：3，自引：0，他引：3  

朱明华  范秀敏  刘炳凯  何其昌  Alberto Rovetta 《资源科学》2009,31(9):1612-1618

城市化的迅猛发展、经济的高速增长,城市垃圾产生量日渐增多,如何实现垃圾减量化、资源化、无害化作为可持续发展领域的焦点,已成为环境综合治理工作中的新难点、新挑战.城市生活垃圾收运费用在垃圾处理系统总费用中占有很大的比例,通过对垃圾收运问题的研究,可以有效节约成本,提高作业效率.文章对城市生活垃圾收运现状进行了分析,以总的垃圾收运距离最短为优化目标建立了城市垃圾收运问题的数学模型,提出了以扫描算法和分枝限界法相结合的求解方法.基于优化的结果和GIS技术实现优化作业路径的动态显示,为实际垃圾收运作业提供决策依据.最后,通过调研区浦东新区的实例表明优化后的作业路径减少了17.7%,节约了垃圾收运的成本,证明了该求解方法的实用性和有效性.  相似文献   

Automatic evaluation of digital libraries with 5SQual     

Bárbara L. Moreira  Marcos André Gonçalves  Alberto H.F. Laender  Edward A. Fox 《Journal of Informetrics》2009,3(2):102-123

Digital libraries (DLs) are complex information systems which can present changes in their structure, content, and services. These complexities and dynamics make system maintenance a non-trivial task, since it requires periodical evaluation of the different DL components. Generally, these evaluations are customized per system and are performed only when problems occur and administrator intervention is required. This work aims to change the situation. We present 5SQual, a tool which provides ways to perform automatic and configurable evaluations of some of the most important DL components, among them, digital objects, metadata, and services. The tool implements diverse numeric indicators that are associated with eight quality dimensions described in the 5S quality model. Its generic architecture was developed to be applicable to various DLs and scenarios. In sum, the main contributions of this work include: (i) the design and implementation of 5SQual, a tool that validates a theoretical DL quality model; (ii) the demonstration of the applicability of the tool in several usage scenarios; and (iii) the evaluation (with usability specialists) of its graphical interface specially designed to guide the configuration of 5SQual evaluations. We also present the results of interviews conducted with administrators of real DLs regarding their expectations and opinions about 5SQual.  相似文献   

Use of astronomical literature—A report on usage patterns     

Edwin A. Henneken  Michael J. Kurtz  Alberto Accomazzi  Carolyn S. Grant  Donna Thompson  Elizabeth Bohlen  Stephen S. Murray 《Journal of Informetrics》2009,3(1):1-8

In this paper we present a number of metrics for usage of the SAO/NASA Astrophysics Data System (ADS). Since the ADS is used by the entire astronomical community, these are indicative of how the astronomical literature is used. We will show how the use of the ADS has changed both quantitatively and qualitatively. We will also show that different types of users access the system in different ways. Finally, we show how use of the ADS has evolved over the years in various regions of the world.  相似文献   

Paradigm wars, dialogue or dance: is rapprochement possible and/or desirable?     

Bal Chandra Luitel  Elisabeth Settelmaier  Les Pereira  Paula Joyce  Emilia Nhalevilo  Alberto Cupane  Peter Charles Taylor 《Cultural Studies of Science Education》2009,4(3):529-552

In focusing on the Kincheloe and Tobin paper, ‘The Much Exaggerated Death of Positivism,’ this forum explores the hegemony of positivism in the professional practices of a group of educators whose research expertise lies in the fields of science education, mathematics education and leadership education. Responding to the first question, ‘What is your personal/professional experience of the hegemony of positivism?’, four key issues arise: is positivism part of the external world or is it within us (and thus what is our agency)?, the role of positivism as a driver of Western cultural imperialism, dualism as the chief logic of positivism, and the difficulty of responding to positivism from a pluralist perspective. The second question, ‘Is rapprochement between positivism and other paradigms possible and/or desirable without being re-colonised?’, raises a number of key issues that, although relatively new to science education, are of increasing interest to cultural studies researchers keen to embrace alternative research paradigms with which to create culturally inclusive science curricula. The discussants reveal their personal experiences of being marginalised by the hegemony of positivism and give voice to a range of opinions about how best to respond. The integral perspective of spiral dynamics is proposed as a model of paradigm evolution, our fundamental assumptions about modern progress are questioned, and the non-dualist logic of dialectics is explored as a more inclusive rationality for researchers. In the spirit of counter-hegemonic cultural studies, the discussants draw on their personal Buddhist and Hindu perspectives to open new doorways into complex ontological systems lying beyond the simplistic materialism of crypto-positivism. We are given a glimpse of powerful means of generating new insights into the emergent universe (within and without) that an evolving science endeavours to explain.  相似文献   

Wasting Talent: Using Counter-Storytelling to Narrate Dismal Educational Outcomes     

Martín Alberto Gonzalez 《Journal of Latinos & Education》2018,17(3):252-256

A recent study illustrated that the educational attainment of Latina/o students has been dismal during the past decade and that many Latinas/os continue to “fall through the cracks” of the educational pipeline. Through storytelling, I juxtapose my educational trajectory as a high school graduate with that of my third-oldest brother, who “fell through the cracks” of the educational pipeline as an underclassman in high school. I provide examples of how being reprimanded for minimal misconduct negatively impacted my older brother’s overall school experiences, which ultimately prevented him from finishing high school despite his potential to succeed.  相似文献   

Science Teacher Education in Brazil: 1950–2000     

Alberto Villani  Jesuina Lopes de Almeida Pacca  Denise de Freitas 《Science & Education》2009,18(1):125-148

This paper analyzes the most significant events occurring in Brazil’s educational, social and political areas over the last half century, viewed against a background of relevant worldwide events. The hypothesis presented here is that the relations between the country’s educational policies, the demands of the various segments of academia, and the public school system have always been strained. This strain has contributed positively to the evolution of academic knowledge and production, to the design of more modern curricular projects by institutional authorities, and to the initial recognition of the specific construction of school knowledge by the school system itself. However, the interaction of these major institutions lacks a crucial element—one that would lead to an effective change in the education of science teachers and produce a positive impact on Brazil’s schools—namely, the wholehearted participation of science teachers themselves. With this analysis, we intend to contribute by offering some perspectives and proposals for science teacher education in Brazil.  相似文献   

Contemporary Science and Worldview-Making     

Alberto Cordero 《Science & Education》2009,18(6-7):747-764

This paper discusses the impact of contemporary scientific knowledge on worldviews. The first three sections provide epistemological background for the arguments that follow. Sections 2 and 3 discuss the reliable part of science, specifically the characterization, scope and limits of the present scientific canon. Section 4 deals with the mode of thinking responsible for both the canon’s credibility and its power to guide speculative activity. With these preliminaries in place, the remainder of the paper addresses the issue of tolerance to “alternative perspectives”. The analyses in this part focus on the extent to which mature scientific thought embodies open-mindedness, with pluralism and competition between perspectives as central themes. I argue for four related claims, concerning scientific literacy, the impact of the canon on rational speculation, the limits of scientific pluralism, and the popular idea that recent forms of “scientific (natural) theology” have rational merit and can help worldview-making in our age, respectively: (C1) Which theories and narratives (or parts of them) belong in the scientific canon, and whether they are worldview independent, are matters contingent upon the state of knowledge—not something one can convincingly determine on metascientific or transcendental insight. (C2) The current scientific canon and its associated methodology provide research with strong directionality, often against popular currents. (C3) Current science does marginalize some views dear to many people. (C4) Although natural theology “officially” purports to embody scientific methodology, all it presently has on offer are poorly thought out ventures embodying (at best) only relaxed versions of that methodology; if so, the relationship between current projects in natural theology and science cannot (without begging the question) be reasonably described as one of “partial overlap”, “mutual modification”, or “ongoing complementarity”.  相似文献   

Commercializing the laboratory: Faculty patenting and the open science environment     

Kira R. Fabrizio  Alberto Di Minin 《Research Policy》2008,37(5):914-931

This paper investigates the relationship between patenting and publication of research results by university faculty members. Our study adds to the limited evidence on this topic with an empirical investigation based on a panel data set for a broad sample of university researchers. Results suggest that publication and patenting are complementary, not substitute, activities for faculty members. This is not consistent with recent concerns regarding deleterious effects of patenting on the research output of faculty members. Average citations to publications, however, appear to decline for repeat patenters, suggesting either a decrease in quality or restrictions on use associated in patent protection.  相似文献   

The role of SME entrepreneurs’ innovativeness and personality in the adoption of innovations     

Alberto Marcati  Alessandro M. Peluso 《Research Policy》2008,37(9):1579-1590

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