This paper explores multilevel modeling approaches for 2-group randomized experiments in which a treatment condition involving clusters of individuals is compared to a control condition involving only ungrouped individuals, otherwise known as partially nested cluster randomized designs (PNCRTs). Strategies for comparing groups from a PNCRT in the…

This work describes the design and construction of an open source, entity resolution system that enables users to assign and maintain persistent identifiers for master data items. Two key features of this system that are not available in current ER systems and that make persistent identification possible are (1) The capture and management of…

A long-standing question in educational research and policy discussion turns on whether technology-based instruction can improve academic performance. Finding a convincing answer to this question is important because school systems across the country have invested and continue to invest very large sums on new instructional hardware and software.…

Process models are often the basis for demonstrating improvement and compliance in software engineering organizations. A descriptive model is a type of process model describing the human activities in software development that actually occur. The purpose of a descriptive model is to provide a documented baseline for further process improvement…

A call for a bridge between research and practice is nothing new, yet it seems to be an impossible task to accomplish. Despite the dedicated efforts made by numerous researchers in the past, the world is still largely separate between researchers and teachers. One piece of evidence is that research studies seem to have only a little impact on…

The research in this dissertation examined the language and literacy practices of middle school children as they played Gamestar Mechanic, a game-based learning environment constituted by a flash-based multiplayer online role-playing game designed to introduce them to the Discourse of game designers, by exposing them to key principles and…