Proceedings: Voice Technology for Interactive Real-Time Command/Control Systems Application

Speech understanding among researchers and managers, current developments in voice technology, and an exchange of information concerning government voice technology efforts are discussed

Embedded System Security: A Software-based Approach

We present a body of work aimed at understanding and improving the security posture of embedded devices. We present results from several large-scale studies that measured the quantity and distribution of exploitable vulnerabilities within embedded devices in the world. We propose two host-based software defense techniques, Symbiote and Autotomic Binary Structure Randomization, that can be practically deployed to a wide spectrum of embedded devices in use today. These defenses are designed to overcome major challenges of securing legacy embedded devices. To be specific, our proposed algorithms are software- based solutions that operate at the firmware binary level. They do not require source-code, are agnostic to the operating-system environment of the devices they protect, and can work on all major ISAs like MIPS, ARM, PowerPC and X86. More importantly, our proposed defenses are capable of augmenting the functionality of embedded devices with a plethora of host-based defenses like dynamic firmware integrity attestation, binary structure randomization of code and data, and anomaly-based malcode detection. Furthermore, we demonstrate the safety and efficacy of the proposed defenses by applying them to a wide range of real- time embedded devices like enterprise networking equipment, telecommunication appliances and other commercial devices like network-based printers and IP phones. Lastly, we present a survey of promising directions for future research in the area of embedded security

The Influence of Context on Metacognition and Its Measurement

Metacognition enhances students’ efforts to effectively self-regulate their learning. It is a multifaceted construct that includes metacognitive knowledge, metacognitive regulation, and metacognitive experiences. Metacognition theory clearly indicates that metacognitive regulation should be impacted by the context in which the learning takes place, but little empirical research has attempted to show this effect of context on metacognitive regulation. The purpose dissertation of this was to investigate how context influences undergraduate students’ use of metacognitive regulation. To this end, an instrument (the Metacognition Inventory for Post-Secondary Students; MIPSS) that assesses metacognitive knowledge globally and metacognitive regulation as a context-dependent construct was created and evaluated through item analysis and factor analysis. Then, within-person differences in metacognitive regulation were examined, measures of metacognition and self-regulated learning (SRL) were associated with each other and used to predict academic achievement. Results indicated the MIPSS has a bi-factor structure, metacognitive regulation is influenced by the course and activity associated with the regulation, and associations among metacognition and SRL scales and achievement tend to follow theoretical predictions. Limitations and future directions for research are discussed. Advisor: Anthony D. Alban

Bowdoin Orient v.132, no.1-24 (2002-2003)

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