This dissertation presents the results of a tripartite exploration of English use by Latinxs in post-Katrina New Orleans, defined here as an ethnolinguistic repertoire that I call New Orleans Latinx English (NOLAE). The project considers how contemporary English use differs from that found in a pre-Katrina sample, how social network geometry…

Historically, deep learning opportunities have occurred in schools attended by this country's most advantaged students, and there have been few successful efforts to systemically create the structures and policies necessary to ensure every student has access to this type of learning. The New Tech Network, a network of more than 200 elementary,…

This report presents key lessons from the third year of the Better Math Teaching Network (BMTN), a networked improvement community aimed at improving student-centered instructional practices. As a networked improvement community, BMTN educators use a collaborative work approach and quick-cycle testing to refine instructional routines, adjusting…

The Robert Bowne Foundation for out-of-school time (OST) supports the development of quality programs that offer literacy education in the out-of-school hours to children and youth of New York City, especially young people from disadvantaged communities. The foundation's networking meetings, now in their 10th year, offer quarterly forums in which…

There is increasing concern that community college student success should not only consider how many students earn degrees, but also how and to what extent the degrees enhance individuals' professional livelihoods. Whether that happens depends on students' ability to make strategic and well-informed choices. Looking through the lens of a…

As social media use is rising among adolescents, the issue of whether this use leads to positive or negative outcomes warrants greater understanding. This article critically reviews the literature related to this important topic. Specifically, we examine how social media use affects social connectedness in terms of three elements of adolescent…

We present a literature review of the emerging research area online mathematics teacher education (OMTE). The review focuses on identifying (1) the main issues investigated in the area, (2) the main theoretical approaches employed, (3) the kind of empirical evidence that the researchers produce and present in order to support their findings and…

This paper reflects on the key actors in education policy making in Zimbabwe. It looks at the contextual complexities that characterized policy-making in this country to make sense of the contestations that the state had to confront and accommodate. The policy network approach is employed as an analytical framework to clarify how, in particular…

Social web services catalog users' activities across the Internet, aggregating, analyzing, and selling a vast array of user data to be used largely for consumer profiling and target marketing. This article interrogates the tacit agreements and terms-of-use policies that govern who owns user data, how it circulates, and how it can be used. Relying…

This work focuses on the impact of mobile computing on individuals' perspectives of places within their community. A technological intervention is designed and deployed to augment the user experience of visiting different locations around town, physically exploring them while also interacting with an online tool. The tool-supported activity serves…

Adolescent smoking and friendship networks are related in many ways that can amplify smoking prevalence. Understanding and developing interventions within such a complex system requires new analytic approaches. We draw on recent advances in dynamic network modeling to develop a technique that explores the implications of various intervention…

In this thesis, delay and security issues in network coding are considered. First, we study the delay incurred in the transmission of a fixed number of packets through acyclic networks comprised of erasure links. The two transmission schemes studied are routing with hop-by-hop retransmissions, where every node in the network simply stores and…

The rapid advancement of wireless technology has instigated the broad deployment of wireless networks. Different types of networks have been developed, including wireless sensor networks, mobile ad hoc networks, wireless local area networks, and cellular networks. These networks have different structures and applications, and require different…

The University of Helsinki established a Teachers' Academy to reward excellence in teaching. This study focuses on teachers' significant networks and their meaningful conversations about teaching and learning before the establishment of the Teachers' Academy. The research data consisted of answers to open-ended questions, and were examined using…

Background/Context: Teachers' relationships with principals, instructional coaches, and other teachers have important implications for the improvement of their instructional practice and student learning. In particular, teachers who access content-specific instructional expertise through their social networks are more likely to exhibit and sustain…