Jason Upchurch

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Compared the effects of play on the psychosocial adjustment of 46 children hospitalized for acute illness, who were placed in one of four groups: therapeutic play, diversionary play, verbal support, and no treatment. Ratings of psychological adjustment included self-report, as well as nurse and parent ratings. Children in the therapeutic play condition(More)
Each day, malware analysts are tasked with more samples than they have the ability to analyze by hand. To produce this trend, malware authors often reuse a significant portion of their code. In this paper, we introduce a technique to statically decompose malicious software to identify shared code. This technique variably applies a sliding-window methodology(More)
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA scientific and technical information (STI) program plays a key part in helping NASA maintain this important role. The NASA STI program operates under the auspices of the Agency Chief Information Officer. It collects, organizes, provides for archiving,(More)
Detecting code reuse in malicious software is complicated by the lack of source code. The same circumstance that makes code reuse detection in malicious software desirable , that is, the limited availability of original source code, also contributes to the difficulty of detecting code reuse. In this paper, we propose a method for detecting code reuse in(More)
As the technological and operational capabilities of unmanned aircraft systems (UAS) have grown, so too have international efforts to integrate UAS into civil airspace. However, one of the major concerns that must be addressed in realizing this integration is that of safety. For example, UAS lack an on-board pilot to comply with the legal requirement that(More)
This paper describes Variant, a testing framework for projects attempting to locate variants of malware families through similarity testing. The framework is a series of tests and data standards to evaluate recall and precision in tools that attempt to statically measure similarity in implementation of compiled software, specifically in determining code(More)
This paper provides an overview of a Detect and Avoid (DAA) concept developed by the National Aeronautics and Space Administration (NASA) for integration of Unmanned Aircraft Systems (UAS) into the National Airspace System (NAS), and provides results from human-in-the-loop experiments performed to investigate interoperability and acceptability issues(More)
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA scientific and technical information (STI) program plays a key part in helping NASA maintain this important role. The NASA STI program operates under the auspices of the Agency Chief Information Officer. It collects, organizes, provides for archiving,(More)
Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA scientific and technical information (STI) program plays a key part in helping NASA maintain this important role. The NASA STI program operates under the auspices of the Agency Chief Information Officer. It collects, organizes, provides for archiving,(More)