One step antibody-mediated isolation and patterning of multiple cell types in microfluidic devices     

Danny Bavli  Elishai Ezra  Daniel Kitsberg  Margarita Vosk-Artzi  Shashi K. Murthy  Yaakov Nahmias 《Biomicrofluidics》2016,10(2)

Cell-cell interactions play a key role in regeneration, differentiation, and basic tissue function taking place under physiological shear forces. However, current solutions to mimic such interactions by micro-patterning cells within microfluidic devices have low resolution, high fabrication complexity, and are limited to one or two cell types. Here, we present a microfluidic platform capable of laminar patterning of any biotin-labeled peptide using streptavidin-based surface chemistry. The design permits the generation of arbitrary cell patterns from heterogeneous mixtures in microfluidic devices. We demonstrate the robust co-patterning of α-CD24, α-ASGPR-1, and α-Tie2 antibodies for rapid isolation and co-patterning of mixtures of hepatocytes and endothelial cells. In addition to one-step isolation and patterning, our design permits step-wise patterning of multiple cell types and empty spaces to create complex cellular geometries in vitro. In conclusion, we developed a microfluidic device that permits the generation of perfusable tissue-like patterns in microfluidic devices by directly injecting complex cell mixtures such as differentiated stem cells or tissue digests with minimal sample preparation.  相似文献   

“Theorizing teacher mobility”: a critical review of literature     

Robert Vagi  Margarita Pivovarova 《Teachers and Teaching》2017,23(7):781-793

In this critical review of literature, we summarize the major theoretical frameworks that have been used to study teacher mobility. In total we identified 40 teacher mobility studies that met our inclusion criteria. We conclude that relatively few theoretical frameworks have been used to study teacher mobility and those that have been used are lacking in several key areas. Specifically, none of the current teacher mobility theories are able to adequately account for the many teacher- and school-level factors that likely influence teachers’ professional decisions. Finally, we suggest a theoretical framework from the organizational psychology literature that can address the shortcomings of theories identified in this review.  相似文献   

A praxeological perspective for the design and implementation of a digital role-play game     

Eric Sanchez  Réjane Monod-Ansaldi  Caroline Vincent  Sina Safadi-Katouzian 《Education and Information Technologies》2017,22(6):2805-2824

This paper draws on an empirical work dedicated to discussing a theoretical model for design-based research. The context of our study is a research project for the design, the implementation and the analysis of Insectophagia, a digital role-play game implemented in secondary schools. The model presented in this paper aims at conceptualizing researchers’ and practitioners’ relationships with the notion that knowledge development takes place at a meta-didactical level when the participants develop a shared practice and a shared discourse on practice (a common praxeology). This is done through collaboration and teacher-centered design of innovative learning settings. This model emerges from a double approach: (1) a literature review on collaborative research in education and, (2) an analysis of the verbal interactions of practitioners and researchers involved in the project. The study emphasizes the development of knowledge among participants. It also emphasizes the importance of knowledge brokering for filling the gap between research and practice and thus, for the adoption of digital technology by practitioners.  相似文献   

Identification of gifted students with learning disabilities in a Response‐to‐Intervention era     

Franci Crepeau‐Hobson  Margarita Bianco 《Psychology in the schools》2011,48(2):102-109

The identification of children who are twice‐exceptional—those who are gifted and have concomitant learning disabilities (LDs)—has historically posed a number of challenges for school psychologists and other school personnel. With the reauthorization of the Individuals With Disabilities Education Act and the shift to the use of a Response‐to‐Intervention (RtI) model to identify students with LDs, the task of identifying those who are twice exceptional is even more daunting. This article proposes an integrated model for the identification of gifted children with LDs that blends standardized assessment methods with practices consistent with RtI. This balanced approach brings together the best of both worlds to more accurately identify twice‐exceptional students and better meet their educational needs. © 2010 Wiley Periodicals, Inc.  相似文献   

From The Editors’ Desk     

Margarita Machado-Casas  Enrique G. Murillo Jr. 《Journal of Latinos & Education》2014,13(2):83-84

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Challenge to feminist philosophy     

Margarita Levin 《Academic Questions》1988,1(4):48-53

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Introduction to the Issue     

Cassie Sanchez 《Equity & Excellence in Education》2013,46(4):431-432

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COMMUNITY COLLEGE MANAGEMENT DEVELOPMENT PROGRAMS     

Bonnie M. Sanchez 《Community College Journal of Research & Practice》2013,37(3):288-294

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Adaptation and evaluation of a learning analytics dashboard to improve academic support at three Latin American universities     

Julio Guerra  Margarita Ortiz-Rojas  Miguel Angel Zúñiga-Prieto  Eliana Scheihing  Alberto Jiménez  Tom Broos  Tinne De Laet  Katrien Verbert 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(4):973-1001

Despite the success of academic advising dashboards in several higher educational institutions (HEI), these dashboards are still under-explored in Latin American HEI's. To close this gap, three different Latin American universities adapted an existing advising dashboard, originally deployed at the KU Leuven to their own context. In all three cases, the context was the main ruling factor to these adaptations. In this paper, we describe these adaptions using a framework that focuses on four different elements of the context: Objectives, Stakeholders, Key moment and Interactions. Evaluation of the adapted dashboards in the three different Latin American universities is conducted through pilots. This evaluation shows the value of the dashboard approach in different contexts in terms of satisfaction, usefulness and impact in academic decision-making and advising tasks. The main contribution of this paper is the systematic reporting of the adaptations to an academic advising dashboard and showing the value of an academic advising dashboard on academic decision-making and advising tasks.  相似文献   

Description of Environmental Factors in Schools: Lessons from a Study in North–West Spain     

Julia Crespo Comesa?a  Margarita Pino Juste 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2007,24(1):205-218

The objective of this study is to offer a view on the different environmental factors that affect health (sound, light, colour, temperature) in the design, planning and organization of school premises. To achieve this, the authors first outline the problems leading to unhealthy situations. They subsequently analyse all the building and planning factors behind those problems based on a study carried out in the Autonomous Community of Galicia, in the north west of Spain. The study took as its subject all secondary-level education centres built in Galicia since the Spanish Basic Act on the Educational System (LOGSE) was passed by the Spanish Parliament in 1990. To conclude, the article offers a number of guidelines to be taken into account when designing a school environment.  相似文献