Featured Research

  • Jefferson deleted image file decay

    Digital forensic investigators recover data from various media and devices, then use those recovered artifacts to infer past user or system activity. Investigators sometimes recover whole, intact artifacts, but often critical evidence is only in the form of partial files or residual fragments from deleted content. In these cases, investigators must attempt to infer what whole artifact used to exist, and what that means for the investigation. Jim Jones and his team have been working on methods to determine how deleted files "decay" over time, what factors affect that decay, and what inferences can be drawn from such an understanding.

  • Electronic Noses

    An electronic nose (e-nose) is a biologically inspired device designed to mimic the operation of the olfactory system. The e-nose utilizes a chemical sensor array consisting of broadly responsive vapor sensors, whose combined response produces a unique pattern for a given compound or mixture. Eric Nallon, a recent graduate of the PhD program offered by the Electrical and Computer Engineering department at George Mason University (GMU) began working on using organic polymers and organic semiconductors as materials in chemical sensors.

  • Images of CDs and DVDs generated by Digital Laser Microscopy (DLM) (see image) can be used to recover data from damaged media. Jim Jones and his team are able to image factory pressed as well as home-burned CDs and DVDs and recover the data under a variety of damage scenarios.

  • Implementations of mathematically secure cryptographic algorithms leak information through side channels during run time. Professor Jens-Peter Kaps and his students from the Cryptographic Engineering Research Group (CERG) are investigating new innovative methods to protect secrets stored on FPGAs.

  • Professor Jill Nelson's research group focuses on solving detection and estimation problems in the fields of signal processing and communications. One of the group's recent projects focuses on using sonar measurements to locate and track underwater objects.

  • Professor Kathleen Wage's research group focuses on problems that require a synthesis of array processing, acoustics, and oceanography. Their latest work involves a year-long experiment in the Philippine Sea. The plot shows the spatial spectrum of ambient noise recorded by the PhilSea vertical line array.

  • Professor Siddhartha Sikdar's Biomedical Imaging Lab focuses on the investigation of new diagnostic ultrasound imaging techniques and applications and their translation from lab experiments into practical solutions that can be used in a clinical setting.