Petabyte

Agile - What is it? I have recently reinforced my understanding of what Agile is in relation to software development. One of the things that I realized is that the Agile manifesto does not dictate a process you have to follow but is more like a culture of what you need to value. One of the most popular agile methodologies is Scrum.  Scrum Guide  (The last time I read the guide was in 2009 - they have released a new guide in 2013. They will probably release a new one soon)- If you follow Scrum, you need to follow everything otherwise you are not doing Scrum. You can do stand ups but if that is only you are doing then it is not Scrum. Scrum will ensure that an Agile culture is developed with the team - and the person to see that through is the Scrum Master. Since Agile is in its teen years - we probably need to reconnect with it and revisit where it is being taken. Agile in its teen year!

Technology Can Help Recently there was a news in Good Morning America were a deaf cashier is taking orders and customers patiently writing out there orders. Here is a link   Deaf Cashier Well with a computer in every pocket there is technology to help. Here is a quick demo that i have created to use HTML 5 technology to create a speech to text web page. Here is a link to the working page http://petabyte.github.io/textToSpeech.html https://www.youtube.com/watch?v=27SZISZAPEA

Why ? Music Education usually involves a student using several instruments. A student needs to log practice time which should meet a certain amount of time spent practicing with the instrument. This is usually done using a log book. The logbook usually needs to be initialed by the parent. ( Sometimes the parent does not really know if the student practiced or not.). So, the logbook usually gets signed by the parent but the student did not really practice. How can you verify this ? - You can record every practice via video (but you are going to need to watch the video in order to determine the amount of practice time) There must be a better way of logging music practice. Music Practice Logbook How to solve this issue ? Good thing is that there is a lot of makers out there connecting things to the internet.  We can create a device that will log music practice so that we can see a summary of the length of practice every day. Using a mic sensor, led lights , and a particle w

Messaging for the Internet of Things   As we embed processing power to a lot of our everyday things. The thing will need to communicate with a server to send data or get data . The thing needs data in order to make something happen. The thing needs to send data so that we can be smarter on how we use the thing. But How do we send data to a central server that is robust, asynchronous and reliable ? MQ, what is old is new Again  MQ or Message Qeueing is new again in the age of the Internet of Things. Messaging Patterns for the enterprise has been around for ages. What were the major reasons that messaging addresses ? 1. Networks are unreliable - data needs to be transported over the network. These networks are a conglemeration of different types of network. Since we do not have control of over most of the network that we use to access the internet. The network will present a lot of problem specially when you are sending messages across the internet. 2. Networks are slow - The

This is a security project that I did this Fall semester. I was interested in why the OAuth1.0a specification did not require you to sign a request using RSA-SHA1 or any RSA algorithm. The first issue that I found is where would you store your private keys in a javascript client? - as a javascript encrypted file ? from the browser ?  - that will be a security hole if you allow javascript to get private keys. These are some of the questions that got me asking and which I cannot find answers to for now. OAuth 1.0a Signature Signing and Verification using JavaScript Implementation Background The OAuth specification tries to define an API authentication method that allows consumer websites or applications to access protected API Resources from a Service provider. The advantage that OAuth provides is that the user of the website or application is not required to disclose their credentials to their service provider. Another advantage of using OAuth to authenticate is that it does not

A decade of Ajax About 10 years ago the Ajax word was coined to describe the interactive  web that Google created at that time Google Suggest and Google Maps  ( Ajax - Jesse James )  . At the heart of that emerging technology is a Microsoft created object XHR(XMLHttpRequest - XMLHttpRequest ) and is now adopted by Mozilla, Apple, and Google (IE is a different Web technology story). XHR is now being adopted as a standard in W3C ( standardized XHR - W3C ). But not only that there is XHR2 ( HTML5 Rocks )  - (I think this has been discontinued.) XHR provides an easy way to retrieve data without doing a page refresh. Despite its name we are using XHR for any structured data that the server can provide us. (JSON, JSON-LD) - and binary data ( SPDY HTTP 2.0 ) We have used AJAX in a lot of creative  (SPA, Web API, MashUps) ways and I am excited to see the next decade of highly interactive web designs. The Future What would the role of AJAX be in the internet of things ? M

I have been re-reading  eloquent javascript  because I am taking up a class this summer that greatly deals with javascript. This book really helped me a lot transitioning from programming solely in Java to understanding some of the practical details of using javascript. The Prototype One of the sections in the book that i found really helpful was the explanation of how prototypes work. Prototype Interference in this section of the book ( Secret life of Objects ). If you are beginning javascript, how the prototype works in javascript is one of the fundamental concepts that you must grasp. There are probably several prototypes in javascript but the three prototypes that you might want to know about are Object.prototype Array.prototype Function.prototype There are a lot of things in each prototype above and I will not discuss each in detail. Ultimately, prototypes are the object that is used as a fallback if the property or method is not on the current object you are refe