Cats & Kittens

My Master's Thesis Abstract

Low cost availability of sensor nodes makes them an attractive choice for sensor networks and their applications. To keep the costs low, sensor nodes are generally unshielded. This unshielded nature of sensor-network nodes combined with their ease of deployment, makes them vulnerable because an adversary can capture these nodes, copy security information to make replicas and deploy the replicas in the network to render malicious attacks. Replication attacks can be extremely hazardous to a network if done in a strategic way. For any node replication detection protocol, the three most important design issues are memory usage, detection probability and energy consumption. Previous node replication detection schemes either incur large memory overhead or consume excessive energy, particularly in the central region of the network. This thesis presents a Memory Efficient Line-Selected Multicast (MELSeM) algorithm which uses efficient bloom filter data structure. We propose a novel distributed technique for detecting node replication attacks using MELSeM. MELSeM reduces the average memory overhead of the network by nearly 70% than the previous distributed schemes while achieving nearly same detection probability.

Something

It has been high time since I've written any blogs here. Today I thought I should not keep postponing this and restart by writing at least something. So here we go -- "SOMETHING"!

Ever seen cascading errors? Here is an example.

North Carolina Trip

50 Not Out !

The following content may appear gibberish ... so viewer discretion is requested. Myriad of thing have happened in last 50 days of my life. Yes, these are my first 50 days, outside India or inside US. And today i'm standing 50 not out, in/on this land. Let the words speak for themselves -

Delta 17, NY, Number 23, Atlanta, Delta 4389, Gainesville, UF, Hub, Book-Store, CISE, Gator1 card, RTS rides, Arbor Park, 16^th Avenue, Walmart, #355, T-mobile, Soccer on basketball court, Computer Networks, ISA, Graduate Student Orientations, Cricket, Advance Data Structures, E220, College football craze, Vending machines, E118, Gatorade, ICEC, Badminton, Computer Networks and Security, Career Fair, Surprise quizzes, Samsung SGH X495, Subway veggie delight, Assignments, Table tennis, Scrubs, HP tx1000z, Projects, Lake Arbor, Mashed potatoes, Video lectures, Bedbugs, Poker, Oaks mall, night walks, Strawberry shake, Dahi Handi, Laundromat, Paneer or rather Tofu Makhanwala, Winn Dixie, Pingo, India Bazaar, Route 16, Ganesh Pooja, Rubiks cube, ....................................... , Go Gators!!!

My F1 Visa Experience

Place: Mumbai Consulate Day & Time: 13^th June 2007, 8:15AM

Got to the counter for interview at around 9:30AM
Visa Officer (VO): A cute and co-operative, blonde lady

VO: Hi (smile)
Me: Hi (full smile)
VO: What are you going to do in the US?
Me: Master’s in Computer Engineering
(She repeated after me … Master’s in Computer Engineering … typed something)
VO: OK, so who is going to sponsor your education?
Me: My grandfather and father are jointly going to sponsor my education. I’ve also borrowed an educational loan of 4 lacs and have got a 40% tuition waver from the University
VO: What does your father do?
Me: He is in business
VO: What type of business?
Me: Both my father and grandfather are commission agents of food grains and jaggery.
VO: Do you know what your father’s annual income is?
Me: The combined income of my father and grandfather is over X lacs per annum.
VO: OK, How much do you have in savings?
Me: XX lacs
(She typed something again …I guess she calculated the amount in dollars …)
VO: So how are you going to manage for your second year’s education?
Me: As I said mam, I have borrowed educational loan of 4 lacs and I’ve got a 40% tuition waver from UFL so the total tuition fees for my entire MS course is around 16K dollars… (Before I finished she asked another question...)
VO: What did you do in your UG?
Me: Masters … sorry BE in Computer Science and Engineering (nervous smile)
VO: When did you finish your BE?
Me: In 2005
VO: What did you do after that?
Me: I’m working in XXX since then.
VO: What is your annual income?
Me: over X lacs per annum
VO: ok, your visa is approved (smile)
Me: Thank you (smile)
(I was in a hurry to leave the darn chamber... wasn’t expecting such a long interview)
VO: Have a great day
Me: Same to you mam (a huge smile again)

Came out of the consulate, was a feeling like having won a battle.

I believe I had such a long interview because I was the last one in the queue, nobody was waiting and she had all the time in the world to interrogate me. Besides this, I think she didn’t’ understand my father’s business.