Tim Habersack

Where I put my things..

Glorious.

Nov 14th 2012

Another glorious day. It's one of those wonderful East Bay mornings, where the temperature is perfect, and clouds are painted as light whispers in the sky.

A truly inspiring sunrise.

Phone calls are weird.

Nov 9th 2012

The older I get, the more I think phone calls are weird. I generally text/email someone beforehand, asking when a good time would be to talk. Making an appointment like a civilized person.

Just because I know somebody doesn't mean I should barge in on their time like that. I wouldn't randomly stop by someones house that I knew, why would I do that with a call?

(Obviously, emergencies and etc aside.)

Importance of keeping the kids healthy

Oct 26th 2012
One of the major strengths of the research was a new model of obesity-programmed mice that allowed weight loss success to be tracked at different stages and ages by flipping a genetic switch that controls hunger. Turning on the switch right after weaning prevented the mice from overeating and ever becoming obese. Similarly, mice that remained at a healthy weight into young adulthood by strict dieting alone were able to maintain normal weight without dieting after turning on the switch. However, chronically overfed mice with the earliest onset of obesity never completely returned to normal weight after flipping the switch, despite marked reduction in food intake and increased activity. -University of Michigan Health System

This is one of my parental fears. I was overweight for a while in my late teens, and it took a lot of work to get healthy. I couldn't imagine trying to do that in a body that is programmed to stay at a heavier weight.

The little guy eats super healthy, and has excellent weight, so I shouldn't worry. But never a bad thing to remain vigilant, and to remember that I'm a role model for him. I should eat better.

Pre-Dawn

Oct 19th 2012
In the pre-dawn morn, little son smiles while we play in the low-lit room.

A walk.

Oct 17th 2012
Quiet stroll, calm mind; in familiar neighborhood. My past and present.

Gasworks, redux.

Oct 14th 2012

The majority of what I spent my time on this weekend was finishing up some outstanding contract work that desperately needed to be completed. The project in particular is called 'Gasworks', for Energy Operations Management (EOM). They are a privately-owned natural gas transmission line company. What this means is, let's say you have some property that has natural gas deposits. You've drilled, and there is actually natural gas there. That's great, but what do you do now? That is where EOM comes in. They build and manage pipelines from natural gas wells to the market, either by connecting to a utilities transmission line, or directly to a customer (Normally a power plant or refinery).

EOM has a SCADA system that monitors their real-time natural gas flow rates and pressures throughout all the pipelines they manage. Gasworks is a web application that ties into EOM's SCADA system, and offers up that real-time data to EOM's customers. I designed the original Gasworks back in 2005, and have been updating and revising it ever since. Most recently, they were due for a complete overhaul. They needed a better design, better mobile/tablet support, and a robust administration section, where their staff could add Locations and Data points to the system, as well as manage customer logins and permissions.

I utilized the CodeIgniter MVC Framework for the site, using their default css for the administration side, and using jQuery Mobile for the customer side. I made a significant change this time around. All the data a customer sees when they log in is pulled from XML (generated via CodeIgniter). The main page is generated with jQuery, based on the XML. It's pretty fast, and lets customers refresh their page without a total page reload. It also added the capability to have customers pull their XML, and integrate it into their own SCADA systems.

On to the screenshots! I can't really show the administration half, since the data is confidential.

[caption id="attachment_200" align="aligncenter" width="645"] The XML data that is generated via CodeIgniter[/caption]

[caption id="attachment_201" align="aligncenter" width="300"] The main view the customer sees when they log in. Systems and locations are all dependent on user permissions. [/caption]

[caption id="attachment_202" align="aligncenter" width="300"] Systems expand to show locations within. Notice how it relates to the generated XML[/caption]

[caption id="attachment_203" align="aligncenter" width="300"] When user clicks on specific location, they see realtime charts. Layout different depending on device used. Mobile users will have charts vertical for spacing issues.[/caption]

And for those who are interested, here is an example of some of the js I wrote. This is the js function I use to parse the XML and print out the main view of Gasworks.

function parseXml(xml)
{
    var html='\n';
    html+='\t
\n'; $(xml).find("system").each(function() { html+='\t
\n'; html+='\t\t

'+$(this).attr('name')+'

\n\n'; html+='\t\t
    \n'; $(this).children('location').each(function() { var location_html=''; var latest_poll=new Date('January 1, 2000');); var a_or_b=true; $(this).children('tag').each(function() { if($(this).attr('date')) { date_string = $(this).attr('date'); var this_date = new Date(date_string.replace(/-/g,'/')); if(latest_poll"+$(this).attr('name')+''+the_time+'\n'; html+=location_html; }); html+='\t\t
\n'; html+='\t
\n'; }); html+='\t
\n'; $('#loading').hide(); $('#accordion_content').text(''); $('#accordion_content').append(html).trigger('create'); $('#accordion_content').show(); }

I'm proud of how this came out. It helped me become very familiar with the jQuerymobile framework, and definitely leveled up my XML manipulation skills.

Start of the personal mini-vacation

Oct 13th 2012

In preparation for the newest addition to our family being born mid-February (yay!), Tara and I determined we needed a short vacation to recoup before our little girl is born. And by short vacation, we're talking totally away from everything. I am currently on my mini vacation right now! (Taras is next week.)

I used Airbnb and found this place to stay. I came here right after work Friday night, and I won't be headed home until Sunday evening. I miss my family like crazy. It's the first time I've ever been away from them. Like for real. Last time Tara and I didn't sleep in the same place was the couple days before our wedding. That also means I've never been away from little A either. It's hard, but I think it's a good thing for everyones sanity overall.

Funny thing, so I have all this time now, right? I totally can't think of what to work on! I am at Fertile Grounds in Berkeley right now.

What are the things I could work on?

  • Nickelpinch actual code
  • Nickelpinch video
  • Spacefruit (codename for space game)
  • Other game (?)
  • Contract work

UPDATE: I'm glad I typed this out. Thinking about it, definitely going to tackle contract work. There is a job I'd really like to finish, for the customer and so it is off my mental stack. And billing money that covers my stay will feel awesome.

Why stories are powerful.

Aug 29th 2012
Fairy tales do not tell children the dragons exist. Children already know that dragons exist. Fairy tales tell children the dragons can be killed.

-G. K. Chesterton

And something similar he said later...

Fairy tales, then, are not responsible for producing in children fear, or any of the shapes of fear; fairy tales do not give the child the idea of the evil or the ugly; that is in the child already, because it is in the world already. Fairy tales do not give the child his first idea of bogey. What fairy tales give the child is his first clear idea of the possible defeat of bogey. The baby has known the dragon intimately ever since he had an imagination. What the fairy tale provides for him is a St. George to kill the dragon. Exactly what the fairy tale does is this: it accustoms him for a series of clear pictures to the idea that these limitless terrors had a limit, that these shapeless enemies have enemies in the knights of God, that there is something in the universe more mystical than darkness, and stronger than strong fear.

-G. K. Chesterton

I came across this today. I swear it's like a message from my younger self. I don't understand how I lost this feeling, but I will try to never lose it again.

CloudPrinter

Aug 8th 2012

TL;DR print doc->driver uploads to your owncloud->QR code displayed, links to it

Quick brain dump

ownCloud needs this. It would help it ascend to low-oxygen heights.

  1. Using my desktop, I'm on a page, or email that I need to take to a meeting, review later, whatevs.
  2. I go to print, choose 'CloudPrinter', and print.
  3. Print driver turns content I was viewing to either png or pdf, and uploads to my ownCloud
  4. Moments after it 'printed', a big QR code shows up
  5. Take pic with tablet/smartphone and BAM that file is on my device

Heavens, think of the paper savings in offices..

Rsync problem; connection refused

Jul 11th 2012

I was trying to rsync over some content between two linux servers (RHE5) at the office, and I kept getting:

servername: Connection refused rsync: connection unexpectedly closed (0 bytes read so far) rsync error: error in rsync protocol data stream (code 12) at io.c(165)

It was driving me batty. Rsync was set up on both servers, I could rsync from my workstation to either of them just fine. What was the problem rsync'ing between them??

I found excellent info in this ServerFault answer:

Try verbose mode in rsync by adding -vvv to see where it is failing. Are you using a very old version of rsync that doesn't default to using ssh (older than 2.6.0)? If so, try adding -e ssh to force ssh mode. -Phil Hollenback

I used the '-vvv' option to get very verbose output when I tried the command. And, ah ha! It was trying to use rsh for the connection.

Getting it to work was just a matter of adding the option '-e ssh' after my other options, and it worked!

(I'm going to start writing posts documenting problems I ran into, and how I fixed them. It helps me remember, and maybe could help others.)

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