Andrew Wang

Learn More
Databases often give incorrect answers when data are missing or semantic understanding of the data is required. Processing such queries requires human input for providing the missing information , for performing computationally difficult functions, and for matching, ranking, or aggregating results based on fuzzy criteria. In this demo we present CrowdDB, a(More)
In this paper we determine analytically the effectiveness of dynamic artificial diversity, i.e., artificial diversity in which the subject of the diversity is re-randomized periodically and mechanically. We refer to a mechanism that implements dynamic diversity as a <i>Metamorphic Shield</i> since this mechanism applies metamorphosis to the system's attack(More)
The Taiwanese-American Occultation Survey (TAOS) will detect objects in the Kuiper Belt, by measuring the rate of occultations of stars by these objects, using an array of three to four 50cm wide-field robotic telescopes. Thousands of stars will be monitored, resulting in hundreds of millions of photometric measurements per night. To optimize the success of(More)
Construction of self-illuminating semicon-ducting nanocrystals, also called quantum dots (QDs), has attracted much attention recently due to their potential as highly sensitive optical probes for biological imaging applications. Here we prepared a self-illuminating QD system by doping positron-emitting radionuclide 64 Cu into CdSe/ZnS core/shell QDs via a(More)
Construction of self-illuminating semiconducting nanocrystals, also called quantum dots (QDs), has attracted much attention recently due to their potential as highly sensitive optical probes for biological imaging applications. Here we prepared a self-illuminating QD system by doping positron-emitting radionuclide (64)Cu into CdSe/ZnS core/shell QDs via a(More)
We investigated the genetic diversity of arbuscular mycorrhizal fungi (AMF) in soils and the roots of Phalaris aquatica L., Trifolium subterraneum L., and Hordeum leporinum Link growing in limed and unlimed soil, the influence of lime application on AMF colonization and the relationship between AMF diversity and soil chemical properties. The sampling was(More)
In this project, we focus on developing a vision module for agents playing the Angry Birds computer game. The module takes a screen-shot of the game as input and output information about objects in the game, including their position, type and shape, within a specified time constraint. To achieve this, a range of common methods in image processing and(More)
—In this paper we analyze the effectiveness of dynamic artificial diversity, i.e., artificial diversity in which the subject of the diversity is re-randomized periodically. We refer to a mechanism that implements dynamic diversity as a Metamorphic Shield since this mechanism applies metamorphosis to the system's attack surface to try to shield the system(More)