Today it is my very great pleasure to introduce to you a new guest blogger: my son David. He has graciously allowed me to prevail upon him to write about his recent science fair project, titled "Reflections on Reflecteing Light". That may sound innocuous, but to quote one of my favorite movies, "That's no ordinary rabbit!". David took this project through our local high school's science fair, was invited to the regional fair, and then to the Massachusetts state science and engineering fair, held at MIT. The Java program he wrote is very sophisticated, both in concept and in execution, and David has agreed to post it here.
David is looking for a software internship for this summer. If you like this sample of his work (and you are in the Boston area), please consider hiring him! He is a graduating high school senior, and will attend UMass/Amherst in the Fall, majoring in Physics and Computer Science. Caveats: 1) Use the code for anything you like, with appropriate attribution to David Balaban. 2) If you make any money from this code, you owe some to David. 3) The entire contents of this page and of the attached code is copyright 2012, Looseleaf Software, Inc. All rights reserved!
David's email is: david AT Looseleaf.net My email is: bbalaban AT gmail
Here's the abstract:
The purpose of my project is to determine how distorted an image becomes when it is reflected off of a curved surface and how the distortion changes as the surface becomes more curved. My hypothesis was that parts of the image will move towards the center of valleys while other parts will move away from peaks and move a smaller distance as the surface becomes more curved. To test this hypothesis, I wrote a program that takes an image saved on the computer and converts it to an array of pixels. The program treats each pixel as a beam of light traveling directly towards a mathematically generated curved surface and traces its path as it is reflected. The program ends by reporting statistical information resulting from over one million beams of light and creating a new picture which shows the resulting image from the reflection. My hypothesis was incorrect, because on average the pixels move away from the center of valleys, not towards.
And here's the code (RAR format): ScienceFair.rar
Here's an example of one of the images he used as input to the program: Control.jpg
And here's the distorted result of that same image: Trial1.gif
Sun, Jun 8th 2014 11:10a Bob Balaban Greetings, geeks! I came across this problem on a project I'm doing: given a RESTful API on a web application server, how do you "throttle" calls so that a given authenticated user can only make a certain number of calls (N) per time interval (W), where both N and W are configurable. The solution I came up with is basically a “Token Bucket” with a sliding time window. What surprised me when I got something working was how easy it really was to implement. The context in whi [read] Keywords: application
"Employee of the Quarter" (not)
Fri, Dec 27th 2013 2:20p Bob Balaban Greetings, geeks! This one is not a technical topic, so feel free to move on. In my work email today, I received a shotgun message announcing the current "Employee of the Quarter". The lucky designee receives preferential parking (near the building entrance) for 3 months. There was a long-ish description of how great the EotQ is, and why they were selected for this honor. Not to take away from someone who is obviously (from the email description) a very hard worker, get-it-done typ [read] Keywords: email
Some Interesting Tech I’ve Been Involved With Lately
Sat, Apr 20th 2013 8:00p Bob Balaban Greetings, geeks! Some of you have been wondering what I've been up to lately. No, not a stealth-mode startup, not a new API for Notes/Domino, nothing like that. In fact, I'm at about the 6-month mark in a whole new (to me) tech area: storage and storage management. It's one of those things that's a whole lot more complicated than you'd ever think, until you start to dig into it. Me, I thought a "disk" started and ended with that box on the end of a USB cable that you plug into a la [read] Keywords: domino
The Interesting Difference Between "Exception" and "RuntimeException" (Java)
Sat, Feb 2nd 2013 6:30p Bob Balaban Greetings Geeks! I hope everyone who attended Lotusphere IBMConnect '13 had a good time and has returned home safely. I didn't attend (again, I stopped going after the first 17), but I've been hearing that it was pretty good. I learned something new about certain types of exceptions in Java programming the other day. Here's the context: I had an Enum class with a few items in it I had a String that came from outside the program that I wanted to convert into an enum'ed constant Thi [read] Keywords: lotusphere
"Reflections on Reflecting Light" - Java program
Wed, May 9th 2012 6:10p Bob Balaban Greetings Geeks! Today it is my very great pleasure to introduce to you a new guest blogger: my son David. He has graciously allowed me to prevail upon him to write about his recent science fair project, titled "Reflections on Reflecteing Light". That may sound innocuous, but to quote one of my favorite movies, "That's no ordinary rabbit!". David took this project through our local high school's science fair, was invited to the regional fair, and then to the Massachusetts state science [read] Keywords: blogger
Happy 5th? Yeah, 5th
Tue, Apr 10th 2012 8:40p Bob Balaban Greetings Geeks! So. March 30, 2007 was my first blog entry. Evidently I missed my own 5th Blanniversary! :-( Better late than never, I suppose. In theory, anyway :-) I know I don't post here often, but I do hope that when I do post, it's worth reading. For some people, anyway. I'll quote from a nice person who commented on that first post: "energetic,funny,cute--that's what I feel about you from your special explanation about "In Theory".I think you must be very content while wr [read] Keywords: lotus
"Programming Domino With Java" - Final Flush
Mon, Jan 2nd 2012 3:10a Bob Balaban Happy New Year, Geeks! Here's the 7th (and final) installment of the book. Thanks again for all the positive feedback. The first installment can be found here The 2nd installment is here The 3rd is here The 4th is here The 5th is here and the 6th is here All of the book content (as is all of the content on this blog) is Copyright 1998 and 2011 by Looseleaf Software, Inc. You may not reproduce or distribute the book's content without permission from me. Some Caveats and ex [read] Keywords: domino