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Displaying 1-17 out of 17 total
Cloud-Based Software Platform for Big Data Analytics in Smart Grids
Found in: Computing in Science & Engineering
By Yogesh Simmhan,Saima Aman,Alok Kumbhare,Rongyang Liu,Sam Stevens,Qunzhi Zhou,Viktor Prasanna
Issue Date:July 2013
pp. 38-47
This article focuses on a scalable software platform for the Smart Grid cyber-physical system using cloud technologies. Dynamic Demand Response (D²R) is a challenge-application to perform intelligent demand-side management and relieve peak load ...
Cryptonite: A Secure and Performant Data Repository on Public Clouds
Found in: 2012 IEEE 5th International Conference on Cloud Computing (CLOUD)
By Alok Kumbhare,Yogesh Simmhan,Viktor Prasanna
Issue Date:June 2012
pp. 510-517
Cloud storage has become immensely popular for maintaining synchronized copies of files and for sharing documents with collaborators. However, there is heightened concern about the security and privacy of Cloud-hosted data due to the shared infrastructure ...
Semantic Information Modeling for Emerging Applications in Smart Grid
Found in: Information Technology: New Generations, Third International Conference on
By Qunzhi Zhou,Sreedhar Natarajan,Yogesh Simmhan,Viktor Prasanna
Issue Date:April 2012
pp. 775-782
Smart Grid modernizes power grid by integrating digital and information technologies. Millions of smart meters, intelligent appliances and communication infrastructures are under deployment allowing advanced IT applications to be developed to secure and ma...
Predicting Missing Provenance Using Semantic Associations in Reservoir Engineering
Found in: International Conference on Semantic Computing
By Jing Zhao,Karthik Gomadam,Viktor Prasanna
Issue Date:September 2011
pp. 141-148
Provenance is becoming an important issue as a reliable estimator of data quality. However, provenance collection mechanisms in the reservoir engineering domain often result in missing provenance information. In this paper, we address the problem of predic...
An Analysis of Security and Privacy Issues in Smart Grid Software Architectures on Clouds
Found in: Cloud Computing, IEEE International Conference on
By Yogesh Simmhan,Alok Gautam Kumbhare,Baohua Cao,Viktor Prasanna
Issue Date:July 2011
pp. 582-589
Power utilities globally are increasingly upgrading to Smart Grids that use bi-directional communication with the consumer to enable an information-driven approach to distributed energy management. Clouds offer features well suited for Smart Grid software ...
Hybrid Data Structure for IP Lookup in Virtual Routers Using FPGAs
Found in: Field-Programmable Custom Computing Machines, Annual IEEE Symposium on
By Oguzhan Erdem, Hoang Le, Viktor Prasanna, Cüneyt F. Bazlamaçci
Issue Date:May 2011
pp. 253
Virtualization allows heterogeneous networks to share same underlying physical substrate. A single router fulfills the roles of multiple virtual routers by maintaining all the forwarding tables. Therefore, multiple virtual routers can run on a single subst...
Integrating Provenance Information in Reservoir Engineering
Found in: Web Intelligence and Intelligent Agent Technology, IEEE/WIC/ACM International Conference on
By Jing Zhao, Na Chen, Karthik Gomadam, Viktor Prasanna
Issue Date:September 2010
pp. 46-49
Data management and analysis has become an integral component in the area of reservoir engineering. An important metric that determines the overall effectiveness of data analysis is data quality. Data provenance, the metadata that pertains to the derivatio...
Adaptive Allocation of Independent Tasks to Maximize Throughput
Found in: IEEE Transactions on Parallel and Distributed Systems
By Bo Hong, Viktor Prasanna
Issue Date:October 2007
pp. 1420-1435
In this paper, we consider the task allocation problem for computing a large set of equal-sized independent tasks on a heterogeneous computing system where the tasks initially reside on a single computer (the root) in the system. This problem represents th...
Analysis of High-Performance Floating-Point Arithmetic on FPGAs
Found in: Parallel and Distributed Processing Symposium, International
By Gokul Govindu, Ling Zhuo, Seonil Choi, Viktor Prasanna
Issue Date:April 2004
pp. 149b
FPGAs are increasingly being used in the high performance and scientific computing community to implement floating-point based hardware accelerators. In this paper we analyze the floating-point multiplier and adder/subtractor units by considering the numbe...
A High-Performance and Energy-Efficient Architecture for Floating-Point Based LU Decomposition on FPGAs
Found in: Parallel and Distributed Processing Symposium, International
By Gokul Govindu, Seonil Choi, Viktor Prasanna, Vikash Daga, Sridhar Gangadharpalli, V. Sridhar
Issue Date:April 2004
pp. 149a
In this paper, we first develop a novel architecture for fixed-point LU decomposition of streaming input matrices, on FPGAs. Our architecture, based on a circular linear array, achieves the minimal latency and is resource-efficient. We then extend it, by u...
Energy Efficient Adaptation of Multicast Protocols in Power Controlled Wireless Ad Hoc Networks
Found in: Parallel Architectures, Algorithms, and Networks, International Symposium on
By Caimu Tang, Cauligi S. Raghavendra, Viktor Prasanna
Issue Date:May 2002
pp. 0091
In this paper a methodology for adapting existing wireless ad hoc network protocols to power controlled networks is presented. Wireless nodes are assumed to have transmission power control with m discrete levels, and a clustering scheme is used in the adap...
Utilization-Based Heuristics for Statically Mapping Real-Time Applications onto the HiPer-D Heterogeneous Computing System
Found in: Parallel and Distributed Processing Symposium, International
By Shoukat Ali, Jong-Kook Kim, Yang Yu, Shriram B. Gundala, Sethavidh Gertphol, Viktor Prasanna, Howard Jay Siegel, Anthony A. Maciejewski
Issue Date:April 2002
pp. 0089
Real-time applications continue to increase in importance as they are employed in various critical areas, such as command and control systems. These applications have traditionally required custom-made systems to execute them. Recently, with the widespread...
A comprehensive performance analysis of virtual routers on FPGA
Found in: ACM Transactions on Reconfigurable Technology and Systems (TRETS)
By Thilan Ganegedara, Viktor Prasanna
Issue Date:July 2013
pp. 1-21
Network virtualization has gained much popularity with the advent of datacenter networking. The hardware aspect of network virtualization, router virtualization, allows network service providers to consolidate network hardware, reducing equipment cost and ...
Understanding web images by object relation network
Found in: Proceedings of the 21st international conference on World Wide Web (WWW '12)
By Na Chen, Qian-Yi Zhou, Viktor Prasanna
Issue Date:April 2012
pp. 291-300
This paper presents an automatic method for understanding and interpreting the semantics of unannotated web images. We observe that the relations between objects in an image carry important semantics about the image. To capture and describe such semantics,...
Toward data-driven demand-response optimization in a campus microgrid
Found in: Proceedings of the Third ACM Workshop on Embedded Sensing Systems for Energy-Efficiency in Buildings (BuildSys '11)
By Qunzhi Zhou, Saima Aman, Sreedhar Natarajan, Viktor Prasanna, Wei Yin, Yogesh Simmhan
Issue Date:November 2011
pp. 41-42
We describe and demonstrate a prototype software architecture to support data-driven demand response optimization (DR) in the USC campus microgrid, as part of the Los Angeles Smart Grid Demonstration Project. The architecture includes a semantic informatio...
Designing a secure storage repository for sharing scientific datasets using public clouds
Found in: Proceedings of the second international workshop on Data intensive computing in the clouds (DataCloud-SC '11)
By Alok Gautam Kumbhare, Viktor Prasanna, Yogesh Simmhan
Issue Date:November 2011
pp. 31-40
As Cloud platforms gain increasing traction among scientific and business communities for outsourcing storage, computing and content delivery, there is also growing concern about the associated loss of control over private data hosted in the Cloud. In this...
Towards an inexact semantic complex event processing framework
Found in: Proceedings of the 5th ACM international conference on Distributed event-based system (DEBS '11)
By Qunzhi Zhou, Viktor Prasanna, Yogesh Simmhan
Issue Date:July 2011
pp. 401-402
Complex event processing (CEP) deals with detecting real-time situations, represented as event patterns, from among an event cloud. The state-of-the-art CEP systems process events as plain data tuples and are limited to detect precisely defined patterns. E...