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The findings and opinions expressed in this report are those of the authors and do not necessarily reflect the positions or policies of the Center for Advance Technology in Schools Abstract A major issue in the study of learning progressions (LPs) is linking student performance on assessment tasks to the progressions. This report describes the challenges(More)
This paper studies the design of data fusion algorithm for asynchronous system with integer times sampling. Firstly, the multisensor asynchronous samplings is mapped to the basic axis, accordingly a sampling sequence of single sensor can be taken. Secondly, aiming at the sensor with the densest sampling points, the modified parallel filtering is given.(More)
A central challenge in using learning progressions (LPs) in practice is modeling the relationships that link student performance on assessment tasks to students' levels on the LP. On the one hand, there is a progression of theoretically defined levels, each defined by a configuration of knowledge, skills, and/or abilities (KSAs). On the other hand, there(More)
This paper studies the integration methods of project management (PM) system based on ontology theory. An ontology is a collection of key concepts and their inter relationships collectively providing an abstract view of an application domain. Paper focuses on the methods of ontology integration for project management system, ontology-based projects(More)
Although the presence of a schema enables many optimizations for operations on XML documents, several studies have shown that many XML documents in practice either do not refer to a schema, or refer to a syntactically incorrect one. It is therefore of utmost importance to provide tools and techniques that can automatically generate XML Schema Definitions(More)
At present, the CAN(Controller Area Network) bus test technology cannot real-time monitor the network's communication quality of the physical layer. If the bus malfunction happens, the current technology cannot position the malfunction node. Aiming at above shortcomings, this paper puts forward CAN bus Loop-test technology of the comprehensive electronic(More)