Resume

• 2010

  Doctor of Philosophy (Ph.D.)

  Dissertation title: A Cyber-Physical Systems approach to Water Distribution System Monitoring

  Computer Science

  Aggie Women in Computer Science

  Texas A&M University

  3.8/4

  Special Topics in Cyber-Physical Systems

  Introduction to AI Robotics

  Computer Architecture

  Special Topics in Wireless and Mobile Sysems

  Programming Language Design

  Distributed Algorithms and Systems

  Analysis of Algorithms

  Operating Systems

  Introduction to Optimization

• 2005

  B Tech

  Computer Engineering

  SpicMacay

  \nIEEE NITK Student Chapter

  \nStar Gazing Club

  \nWeb Club

  \nLinux Users Group

  National Institute of Technology

  Karnataka Surathkal

  8.59/10

• Society for Promotion of Indian Classical Music and Culture Amongst Youth (SPICMACAY)

  Statistics

  Databases

  Programming

  Algorithms

  Linux

  LaTeX

  Data Structures

  C++

  C

  Optimization

  Research

  Towards Optimal Monitoring of Flow-based Systems using Mobile Wireless Sensor Networks

  M. Katherine Banks

  Amin Rasekh

  Monitoring flow-based systems (FBS) (e.g.

  water distribution systems

  oil and gas pipelines

  the human cardiovascular system) is of paramount importance considering their economic and health impacts. FBS monitoring typically has been achieved by costly

  complex

  static sensors that are strategically placed. To reduce the cost of monitoring

  we propose a mobile wireless sensor network (WSN) system comprised of mobile sensors (their movement aided by the inherent flow in the FBS) and static beacons that aid in locating sensors.

  Towards Optimal Monitoring of Flow-based Systems using Mobile Wireless Sensor Networks

  Walt Magnussen

  Ana E Goulart

  Security is an important concern in Voice over IP (VoIP) applications. An approach to securing the signaling

  such as the Session Initiation Protocol (SIP) messages

  is by using Transport Layer Security (TLS). Several studies have been done to measure the impact of using TLS on SIP. However

  there have not been any tests on the use of TLS in the scenario of emergency IP-based calls

  such as Next Generation 9-1-1 (NG-9-1-1) calls. We propose to demonstrate NG-9-1-1 calls over TLS

  and present preliminary statistics of different call scenarios.

  Experiments with SIP over TLS in an NG-9-1-1 testbed

  M. Katherine Banks

  Amin Rasekh

  Avi Ostfeld

  Lidia Smith

  Mobile sensor networks for optimal leak and backflow detection and localization in municipal water networks

  Mohan Kumar M. S.

  Radu Stoleru

  Anjana G. R

  Manohar

  Usha

  In this paper

  we propose a Cyber-Physical system (CPS) - CPWDS

  for continuous monitoring of a WDS. Mobile sensors reside in the CPWDS and move with the flow of water in pipes; mobile sensors communicate with static beacons placed outside the pipes

  and report sensed data; the flows in the pipes are controlled to prevent sensors from getting stuck and to ensure the sensors cover the main pipes of the WDS. We evaluate the proposed algorithms/protocols for the communication

  computation and control of the CPWDS and demonstrate their performance through extensive simulations.

  A cyber-physical system for continuous monitoring of Water Distribution Systems

  Basem Shihada

  Emily Zechman

  Radu Stoleru

  Acyclic flow networks

  present in many infrastructures of national importance (e.g.

  oil and gas and water distribution systems)

  have been attracting immense research interest. Existing solutions for detecting and locating attacks against these infrastructures have been proven costly and imprecise

  particularly when dealing with large-scale distribution systems. In this article

  to the best of our knowledge

  for the first time

  we investigate how mobile sensor networks can be used for optimal event detection and localization in acyclic flow networks. We propose the idea of using sensors that move along the edges of the network and detect events (i.e.

  attacks). To localize the events

  sensors detect proximity to beacons

  which are devices with known placement in the network. We formulate the problem of minimizing the cost of monitoring infrastructure (i.e.

  minimizing the number of sensors and beacons deployed) in a predetermined zone of interest

  while ensuring a degree of coverage by sensors and a required accuracy in locating events using beacons. We propose algorithms for solving the aforementioned problem and demonstrate their effectiveness with results obtained from a realistic flow network simulator.

  On Event Detection and Localization in Acyclic Flow Networks

  Harsha Chenji

  Radu Stoleru

  This paper presents the first analytical model for coexisting 802.11 and 802.15.4 networks. We derive analytically

  using Markov chains

  the normalized saturation throughput under coexistence. Additionally

  we propose a performance tuning method that ensures QoS and a distributed Nash-equilibrium-based method that ensures fairness. We validate our model and the tuning methods using a coexistence simulator previously developed and presented by the authors. We demonstrate that our model has a low average error smaller than 10%.

  On Modeling the Coexistence of 802.11 and 802.15.4 Networks for Performance Tuning

  Basem Shihada

  M. Katherine Banks

  Radu Stoleru

  Amin Rasekh

  Lidia Smith

  Leak and backflow detection are essential aspects of Water Distribution System (WDS) monitoring. Most existing solutions for leak/backflow detection in WDSs focus on the placement of expensive static sensors located strategically. In contrast to these

  we propose a solution whereby mobile sensors (i.e.

  their movement aided only by the inherent water flow in the system) detect leaks/backflow. Information about the leaks/backflow is collected from the sensors either by physically capturing them

  or through wireless communication. Specifically

  we propose models to maximize leak/backflow detection given a cost constraint (a limit on the number of sensors). Through extensive simulations

  we demonstrate the superior performance of our proposed solution when compared with the state of the art solutions (e.g.

  algorithms/protocols and analysis).

  Mobile Sensor Networks for Leak and Backflow Detection in Water Distribution Systems

  Implemented secure call set up using SIP protocol over TLS and HTTPs\n\nMaintained and enhanced a SIP-based VoIP emergency calling service testbed

  NG-9-1-1

  Sensor Control For Cyber-Physical Water Distribution Systems

  Determined the system dynamics for the stochastic movement of sensors with minimal steering capability through a water distribution system\n\nDesigned a sensor control mechanism using a Linear Quadratic Regulator (LQR) to guide sensors to ensure sensing coverage

  Steganography on images and audio

  Developed an application to perform steganography on BMP images and WAV and AU audio files\n\nDeveloped a web interface using LAMP software bundle

  Energy Efficient Data Handling with Time Synchronization in Wireless Sensor Networks

  Developed a secure

  energy efficient time synchronization protocol for low power wireless sensors networks\n\nImplemented and tested the protocol using GlomoSim simulator

  PACMan: Prefetch-aware Cache Management for High Performance Caching

  Implementation of PACMan

  a recent approach towards prefetch-aware cache replacement

  in last level cache in SimpleScalar by adding a L3 cache

  streamer prefetcher

  and DRRIP (Dynamic Re-Reference Interval Prediction) using Set Dueling Monitors to SimpleScalar\n\nProposed extension of prefetch awareness to LRU and Segmented LRU cache replacement policies

  IBM's The Great Mind Challenge

  Our team was among the 8 finalists of The Great Mind Challenge competition organized by IBM in 2007\n\nDeveloped a Database system on a web based application for a District Collectorate Information System

  Obstacle avoidance using optical flow in Unmanned Aerial Vehicles

  Obtained the time to contact for objects in the visible frame through optical flow using OpenCV libraries\n\nEnhanced raw video feeds from a Unmanned Aerial Vehicle robot to indicate time to contact and optical flow

  Analysis of the co-existence of wireless technologies

  Developed a Markov chain model to analyse the coexistence of WiFi and BoX-MAC

  a commonly based MAC protocol for wireless sensor networks\n\nDeveloped an algorithm based on game theory concepts to tune parameters to enhance performance

  A Cyber-Physical Systems Approach to Water Distribution System Monitoring

  Developing algorithms for optimal event detection and localization

  flow learning

  MAC & group communication protocols

  and flow control in Water Distribution Systems and flow-based systems in general\n\nDeveloped and maintained a C++ simulator to test the design of the Cyber Physical System

  Mahima

  Goldman Sachs Services Pvt Ltd

  Intel Corporation

  San Jose State University

  Xerox Research Centre India

  Texas A&M University

  Indian Space Research Organization

  Texas A&M University

  Developed a GUI application on Visual C# and proprietary build frameworks

  and integrated it with the proprietary trading database and in-house data warehouse\n\nTrained for 12 weeks in C++

  Java

  DB2

  Sybase

  design patterns

  coding practices

  capital markets

  XML

  and OOAD

  Analyst

  Bengaluru Area

  India

  Goldman Sachs Services Pvt Ltd

  Bengaluru Area

  India

  Post Doctoral Researcher

  Xerox Research Centre India

  Software development for device to device connectivity and a proof of concept for Google chrome browser\n\nWorked on Intel's Common Connectivity Framework for the Chrome browser using Native Client modules and pepper API

  Summer Intern

  Portland

  Oregon Area

  Intel Corporation

  College Station

  Courses CSCE 181 and CSCE 481\n\nResponsible for holding office hours and grading 6 short reports

  1 long report each

  and attendance for over 250 students

  Teaching Assistant

  Texas A&M University

  College Station

  Designed a Cyber-Physical System (CPS) to monitor Water Distribution Systems that uses mobile sensors and static access points\n\nWorked on the design of a Markov Chain model and game theoretic technique to boost throughput by tuning the parameters of coexisting 802.11 and 802.15.4 devices\n\nMentored students undertaking research in Cyber-Physical Systems and Wireless Coexistence in the Laboratory for Embedded and Networked Sensor Systems

  Graduate Assistant - Research

  Texas A&M University

  Bryan/College Station

  Texas Area

  Visiting Assistant Professor

  Texas A&M University

  San Francisco Bay Area

  Assistant Professor

  San Jose State University

  Studied image and audio file formats to identify the least significant bits of information\n\nDeveloped a web-based application that performed steganography on image and audio files

  Summer Intern

  Bengaluru Area

  India

  Indian Space Research Organization

  College Station

  Maintained and enhanced a SIP-based VoIP emergency calling service testbed

  NG-9-1-1\n\nPerformed experiments and analysed NG-9-1-1 calls over TLS

  Graduate Assistant - Research

  Texas A&M University

  IEEE NITK Student Chapter member (Jan 2006 - May 2009)

  Member

  IEEE Student Member

  Member

  Aggie Women in Computer Science

  ACM-W member

  Member

  ACM Student Member

  English

  Hindi

  Kannada

  National Talent Search Scholar

  Scholarship offered to 1000 students at the class X level based on two written examinations and an interview

  National Council of Educational Research and Training (NCERT)

  Student Travel Grant

  Student Travel Grant (Sponsored by NSF): ACM SenSys 2011 and CPS Week 2015