Co-inventor, software architect, and lead software engineer for MagneLink Magnetic Communication System, a through-the-earth digital communication system implemented as a software-defined radio. Created MATLAB simulations of the system and led a small team of programmers implementing signal processing algorithms, communication protocols, and user interface in C++ and Java. Analyzed network performance of real-time distributed computing systems embedded within radar, electronic warfare, and communication systems. Helped implement CORBA-based distributed simulation/emulation of a radar control system. Co-inventor for 5 invention disclosures, 3 of which have been submitted to the US Patent Office.

Taught undergraduate courses in the Computer Science and Computer Engineering departments. Provided mentorship to undergraduate and graduate students. Collaborated on research with other members of the academic staff.

Conducted research and taught 4 courses and 3 laboratory sections per year. Published conference papers and open-source software describing my research in the area of distributed computing. Supervised 9 undergraduate research projects on topics including multicast network protocols for audio streaming, network gaming and distributed file systems. Two projects lead to conference presentations and two lead to honors theses. Four of the students went on to pursue PhDs and two went on to pursue masters degrees. Developed 3 new courses: a senior level course on computer networks, an introductory robotics course using LEGO Mindstorms, and a course entitled "The Way the Web Works" that explored hypertext and graph theory in the context of the World Wide Web. Also taught courses in computer architecture and introductory programming.

Conducted research in the area of network security and survivability as co-principal investigator of a project sponsored by DARPA's Global Mobile Information Systems (GloMo) program. Analyzed security issues associated with bandwidth adaptation techniques for multicast transmission of multimedia content. Analyzed vulnerabilities of reliable multicast protocols and demonstrated denial-of-service attacks. Published conference papers describing the results of this research. Supervised the thesis projects of 4 masters degree students at the Massachusetts Institute of Technology.

Conducted research on several topics including the semantics of delay-free loops in timed discrete-event simulations, real-time scheduling theory and its application to multirate signal processing systems described by dataflow graphs, formal properties of dataflow languages, and the decidability of certain dataflow scheduling problems. Research included experimental implementation as part of the Ptolemy project.Ptolemy is an object-oriented software environment for system-level design of signal processing and communication systems that allows different models of computation, called domains, to be mixed and used together. It consists of hundreds of thousands of lines of C++ code written by dozens of people. Ptolemy has been used at hundreds of sites around the world and is the basis of several commercial products. More information about Ptolemy is available at .Created the "Process Network" domain, which simulates dataflow process networks. Made major contributions to the "Code Generation in C" domain, which translates dataflow graphs into executable C programs. Contributed to the simulation and code generation kernels, the "Discrete Event" domain and the "Communicating Processes" domain. Authored four chapters of the documentation and contributed to several other chapters.

Taught weekly discussion and laboratory sections, held office hours and review sessions, prepared solutions for homework and laboratories, and graded all homework and laboratory assignments for over 40 graduate and undergraduate students in EE123: Digital Signal Processing.

Designed and implemented prototype multi-processor architectures for real-time signal processing. Applied dynamic programming techniques to search for optimal coefficients in low-rate, 2400 bits-per-second speech coding and was co-author of a conference paper describing the work. Designed over-sampling digital filters and implemented a digital audio recording system. Implemented general-purpose inter-processor communication protocols in a microprogrammed direct memory access (DMA) controller. The protocols automatically translated between the native integer and floating-point data formats of digital signal processors and the host computer.

Designed and implemented an integrated hardware/software system to perform extensive functional diagnostics on an embedded microprocessor controller and allow fault-tolerant operation in high-temperature, down-hole environments above 150°C (300°F). The same system also served for testing during manufacturing and for field testing and repair.

Designed and implemented real-time multitasking software for control and monitoring of marine seismic data gathering. Created a tool to generate Bode diagrams for the design of anti-aliasing filters of a digital seismic recording system.

Wrote real-time multitasking software used in a microprocessor controlled industrial quality control system.