Relational binary operators, such as join, are arguably the most costly and frequently used operations in relational data systems. In many join algorithms, the majority of the process time is spent on scanning and attempting to join the parts of the relations that do not satisfy the join condition and...
This study explored the effects of a collaborative learning community (CLC) upon the persistence of community college students. Treatment subjects were participants in two different offerings of the learning community "Life on the Edge". The ex post facto design compared treatment group subjects' persistence to goal with
persistence to goal...
This report serves the formative evaluation of ARC-Learn. The goal of this document is to support the use of evidence to inform programmatic changes and improvements for year two of the program, during which time Cohort One will complete its second year and Cohort Two will complete its first year...
Despite ongoing initiatives and research efforts, the persistent underrepresentation of marginalized groups in Science, Technology, Engineering, and Math (STEM) disciplines in the U.S. has seen little improvement. This study posits that a fundamental change in teacher preparation can lead to more inclusive STEM learning environments. It centers on the development...
Objective ‐ The authors describe a simple and effective tool for selecting digitization
projects from competing alternatives, providing decision makers with objective,
quantitative data.
Methods ‐ The paper adopts the value engineering methodology for the selection,
evaluation and ranking of digitization project proposals. Project selection steps are described. Selection criteria...
The purpose of this study was to: (a) determine the design features of the physical learning environment that support and enhance collaborative, project-based learning at the community college level; and (b) to gain an understanding of the rationale for the selection of the features. The characteristics of the physical environment...
Outdoor schools are located all over the nation. Many students attend these programs to gain science knowledge and experience nature first hand. Outdoor schools are residential programs for students in upper elementary and middle school. Many of the messages are environmental in nature and promote stewardship. The purpose of this...
The purpose of this report is to provide a mid-way evaluation document. This report serves as a record of project status and a set of recommendations for consideration. It is intended to facilitate reflective and adaptive process so that the BID collaborative can renew the project plan and optimize project...
Human-robot teams are invaluable for mapping unknown environments, exploring difficult-to-reach areas, and manipulating inaccessible equipment. However, guiding autonomous robots requires dealing with these dynamic domains while synthesizing a significant amount of data and balancing competing objectives. Current mission planning methods often involve manually specifying low-level parameters of the mission, such...
