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DTSTART;TZID=America/New_York:20230111T100000
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LAST-MODIFIED:20230104T212321Z
UID:6042-1673431200-1673438400@ece.northeastern.edu
SUMMARY:Yukui Luo's PhD Proposal Review
DESCRIPTION:“Securing FPGA as a Shared Cloud-Computing Resource: Threats and Mitigations” \nAbstract:\nWith the widespread adoption of cloud computing\, the demand for programmable hardware acceleration devices\, such as field-programmable gate array (FPGA)\, has increased. To further improve the performance of FPGA-enabled cloud computing\, one promising technology is to virtualize the hardware resources of an FPGA device\, which allows multiple users to share the same FPGA. This solution can provide on-demand instances at the FPGA resource and time levels\, significantly improving the utilization and energy efficiency of the FPGA devices. However\, due to the hardware reconfigurability of FPGA\, current virtualization methods for multi-tenant GPU and TPU instances are incompatible with multi-tenant FPGA virtualization.We define the threat model for multi-tenant FPGA and discuss the security issues related to Confidentiality\, Data Integrity\, and Availability. Based on an analysis of potential attacks\, we present our latest research results and propose two future research directions for mitigations: (1) a multi-tenant FPGA plug-to-play obfuscation module and (2) a hardware-software co-designed multi-tenant FPGA virtualization system\, which includes a hypervisor and a smart multi-tenant FPGA platform.\n\n\nCommittee:\n\nProf. Xiaolin Xu (Advisor) \nProf. Yunsi Fei\nProf. Xue Lin
URL:https://ece.northeastern.edu/event/yukui-luos-phd-proposal-review/
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DTSTART;TZID=America/New_York:20230130T090000
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DTSTAMP:20260626T161140
CREATED:20230125T213940Z
LAST-MODIFIED:20230125T213940Z
UID:6065-1675069200-1675072800@ece.northeastern.edu
SUMMARY:Sai Geetha Seri's PhD Proposal Review
DESCRIPTION:“Advancing Passive Ocean Acoustic Waveguide Remote Sensing for Detection of Fish Sounds\, Seismo-Acoustic Airgun Signals\, and Marine Mammal Vocalizations including Instrumentation Enhancements” \nCommittee: \nProf Purnima Ratilal Makris (Advisor)\nProf Josep M Jornet\nDr Nils Olav Handegard \nAbstract: \nUnderwater passive acoustic monitoring is important for understanding the marine environment\, since many ocean entities produce sound that can travel long ranges especially at low frequencies. For instance\, sound plays a vital role in the communication\, navigation\, and behavior of many marine biological organisms. Human activities in the ocean\, such as shipping\, offshore piling\, and energy prospecting\, generate a wide range and levels of sound. Natural environmental processes\, such as the passage of a hurricane and offshore seismicity are sources of underwater sound. In this thesis\, the instantaneous wide-area Passive Ocean Acoustic Waveguide Remote Sensing (POAWRS) technology implemented with a coherent hydrophone array is developed further and enhanced in a number of ways. First\, the automatic detection and analysis of man-made seismo-acoustic airgun signals employed in offshore geophysical and energy exploration surveys is investigated. Next\, the POAWRS technique is applied successfully for the first time toward the analysis and identification of sounds from some oceanic fish species in the wild using an eight-element prototype hydrophone array. Probability of Detection (PoD) regions are quantified separately for both the seismo-acoustic signals and fish sounds to provide an understanding of the horizontal spatial propagation extent of the acoustic signals from these sources. Finally\, we demonstrate significant enhancements in monitoring marine mammal sounds to include real-time capability and over a wider frequency range via a new in-house developed and fabricated 160-element coherent hydrophone array system. Here\, data from three distinct receiver array systems are analyzed\, presenting a technological evolution in the sensor systems utilized to implement and advance the POAWRS approach for ocean sensing. Development and integration of data acquisition approaches for both acoustic and non-acoustic sensors contained in the in-house developed array are discussed\, including design challenges and solutions.
URL:https://ece.northeastern.edu/event/sai-geetha-seris-phd-proposal-review/
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