There is a verse in the Bible which reads “Rejoice evermore.” The word “Rejoice” here is translated from the word in the original texts, “χαίρω”, pronounced “chairō”. Now this Greek word is interesting, it is the expression of an emotion of great joy, happiness and excitement. To give you a clear picture of what kind of emotion this is, imagine this: You are in a desert asleep and thirsty trying to find your way home. You have a dream of a sheep leading you to a great lake of water. When you awake there is a sheep, not far off, walking away from you. You are amazed by the sheer improbability of the situation and so decided to follow the sheep because of what happened in your dream. The sheep leads you to the top of a hill and looking down you see a lake of water as it was in your dream! It is at this point you would have felt the emotion spoken of here “rejoice”/”chairō”. It is the same emotion used to describe what the three Magian (wise men) experienced when they saw the star they had predicted would lead them to Jesus.

Obviously we cannot always “chairō”. Ecc 3:4 “A time to weep, and a time to laugh; a time to mourn, and a time to dance;” but it is the intended default emotion.

The two shortest verses in the Bible are “Rejoice evermore.” which is tie with the verse “Jesus Wept”. These verses are so different almost polar-opposite yet so highly related! You could almost join the two together into once sentence:
“Jesus wept for you so rejoice evermore for Him!”.

References
http://www.blueletterbible.org/lang/lexicon/lexicon.cfm?strongs=G5463
http://www.blueletterbible.org/lang/lexicon/lexicon.cfm?strongs=G3842

Mean quadratic weighted kappa is useful for measuring the agreement between a set of raters/scorers (e.g. judges scores) as it excludes random-agreement (an example of random agreement is if you had two raters/scores scoring something randomly they would still, over a large data set, have some sort of random agreement between each others scores). The value of kappa is between -1 and 1 where -1 is complete disagreement, 0 is random agreement and 1 is complete agreement.

Calculation

Definitions

1. Let the possible scores/ratings range from s1 to sN e.g. s1=3, s2=4, s3=5 (there are 3 possible scores here 3,4 or 5)
2. Let j1 and j2 be the set set of scores allocated by each judge/scorer e.g. j1=(3,3,5), j2=(5,5,5) (judge-1 scored 3, then 3, then 5, and, judge 2 scored all fives)

Step 1 – Calculate the agreement matrix

The dimensions of this matrix are equal to the number of possible ratings, where the one dimension corresponds to judge 1 and the other corresponds to judge 2. Each element in the matrix is calculated by counting the number of times that combination of scores was given. e.g. Let A be the agreement matrix
Let
s1=3, s2=4, s3=5
j1=(3,4,5,4), j2=(5,4,5,4)

Then A is calculated to be:

Step 2 – Calculate the score histogram for each rater

The score histogram is calculated for each rater. It is a vector where each component contains the number of times that judge scored the given score, that is, there is a component for each possible score.
e.g. Let H1,H2 be the score histograms for judge 1 and 2 respectively
Let
s1=3, s2=4, s3=5
j1=(3,4,5,4), j2=(5,4,5,4)

Then H1 is:
(1,2,1)
H2 is:
(0,2,2)

Step 3 – Calculate Mean Quadratic Weighted Kappa

For each possible score combination from each rater (e.g. (3,3),(3,4),(3,5),(4,3)…(i,j)). So if N is the number of possible scores and T is the number of scores made by each judge then we sum over each i,j combination of scores:
Kappa = 1 – SUMi,j of (((i-j)^2)*A[i,j]/((N-1)^2)*T^2))/((((i-j)^2)*(H1[i]*H2[j]))/((N-1)^2)*T^2)

A numeric calculation of the above equation for cappa in pseudo code would be:

for(int i = 0 ; i < N; i++)
{
  for(int j = 0 ; j < N; j++)
  {
    expected_count = ((H[i]*H[j]) / T);
    weight = ((i-j)^2) / ((N-1)^2);
    numerator += (weight*A[i,j]) / T;
    denominator += (weight*expected_count) / T;
  }
}
kappa = 1.0 - (numerator / denominator);

Example:

If two judges had to place 6 scores where the scores ranged from 4 to 6 and the scores were as follows:
j1 = (4,4,5,6,5,6)
j2 = (5,4,6,5,4,5)

Then:
A =

H1 = (2,2,2)

H2 = (2,3,1)

T = 6

N = 3

Sometimes there is nothing better than reading a random Bible verse. It was King David who once said “We may throw the dice, but the LORD determines how they fall.” – Proverbs 16:33.

So, I decided to post this little random Bible verse utility:

Click here to get a new random verse: Get Random Verse

I achieved this with the http://labs.bible.org API. In Revision 2 here I used jQuery.getJSON, also added spinners and ability to load surrounding verses.

Cause
When working with a bound service one sets up a connection to the service from the client activity by binding the ServiceConnection class by calling
“bindService(intent, mConnection, Context.BIND_AUTO_CREATE);” when the service starts. The error is caused when this Service Connection is not UnBound when the activity ends

Solution
Either in OnStop or OnDestroy depending on whether or not you used OnStart or OnCreate respectively unbind the ServiceConnection by calling:
unbindService(mConnection);

References
http://developer.android.com/guide/topics/fundamentals/bound-services.html

Cause
The time taken to install the apk via the adb tool exceeded the adb default connection timeout value. If this only happens on occasion this may be because your processor is currently being heavily used by another process (check task manager/proc list).

Solution
Either:
1. reduce your processor’s usage and re-try
2. increase the connection timeout value in eclipse windows->preferences->android->ddms see “ADB connection time out (ms)” this is in milliseconds as per description so maybe try increasing it to 1 minute i.e. 60000

gnuplot -p -e "plot 'test.txt'"

• -p to keep the gnuplot window open once the command has run
• -e to specify that a gnuplot command follows (in the example above we plotting a data file test.txt”)

References:
You can download gnuplot for free from here:http://www.gnuplot.info/

If you don’t have a shared a debug.keystore you will get the error eclipse console error “Re-installation failed due to different application signatures.” (for more details see my post http://www.stevenmarkford.com/solution-to-reinstallation-failed-due-to-different-application-signatures-when-debugging-in-eclipse/)

Solution
Copy the default debug.keystore from the one machine to the other machine/s into a known location.
To get the location of the default debug.keystore:
1. Open Eclipse click window->preferences
2. Go to android->build the location in the “Default debug keystore textbox” (see image below)
(Tip: I share a single instance of debug.keystore via dropbox see https://www.dropbox.com/)
3. Once you have shared/copied the debug.keystore onto the various computers update the eclipse setting “Custom debug keystore” to point to this debug.keystore (see image below)

To manually refresh the intellisense:
1. Click Project->Clean…
2. Select the project you wish to refresh the intellisense for and click “ok”

Step 1: Mark the shared project as a library
1. In the Eclipse Project Explorer, right click on the project you wish to share.
2. Click on Properties
3. In the Android section tick “IsLibrary” see pic below:

4. Click Apply then Ok.

Step 2: Reference the library project in another project
1. In the Eclipse Project Explorer, right click on the project you wish to share.
2. Click on Properties
3. In the Android section under “Library” click “Add” and select the Project that was marked as a library from step 1 and click ok. see pic below:

4. Click Apply then Ok.

The project now has access to the classes from the library project.

This is the preferred way to reference shared code in Android.
References
http://developer.android.com/guide/developing/projects/index.html
http://developer.android.com/guide/developing/projects/projects-eclipse.html

Assuming you have the following html file in your project assets\web\index.html:

<html>
<head>
	<script type="text/javascript">
		function ClientSideMethod(message){
			var x=document.getElementById("te");
  				x.innerHTML = message;
		}
	</script>
</head>
<body>
	<div id="te"></div>
	<button onClick="ClientSideMethod('client side method called')"> Call Javascript Method </button>
	<button onClick="activity.TestMethod();">Call Java Activity Method</button>
</body>
</html>

And your activity needs to be implemented as follows:

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;

public class WebViewActivity extends Activity {

	private WebView webView;

        // the method to call from the html button click
	public void TestMethod()
	{
          webView.loadUrl("javascript:ClientSideMethod('activity method called');");
	}

	@Override
	public void onCreate(Bundle savedInstanceState) {
	    super.onCreate(savedInstanceState);

	    this.webView = new WebView(this);

            // requires javascript
	    this.webView.getSettings().setJavaScriptEnabled(true); 

             // set the html view to load
	    this.webView.loadUrl("file:///android_asset/web/index.html"); 

             // make this activity accessible to javascript
	    this.webView.addJavascriptInterface(this, "activity");

	    setContentView(this.webView);
	}
}

References:
http://developer.android.com/reference/android/webkit/WebView.html
http://mobile.tutsplus.com/tutorials/mobile-web-apps/build-a-contacts-application-with-jquery-mobile-the-android-sdk-part-1/