Table of Contents
Math Magics
1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321
0 x 9 + 1 = 1
1 x 9 + 2 = 11
12 x 9 + 3 = 111
123 x 9 + 4 = 1111
1234 x 9 + 5 = 11111
12345 x 9 + 6 = 111111
123456 x 9 + 7 = 1111111
1234567 x 9 + 8 = 11111111
12345678 x 9 + 9 = 111111111
123456789 x 9 +10 = 1111111111
9 x 9 + 7 = 88
98 x 9 + 6 = 888
987 x 9 + 5 = 8888
9876 x 9 + 4 = 88888
98765 x 9 + 3 = 888888
987654 x 9 + 2 = 8888888
9876543 x 9 + 1 = 88888888
98765432 x 9 + 0 = 888888888
1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111 = 12345678987654321
Install OpenBUGS
Steps
- Download OpenBUGS (Note only OpenBUS 2.2.0 works on unix machines) and upload it to dscratch. First upload it to AFS and then copy it to dscratch.
- Unzip the file on the cluster
- Create a file called linbugs with the following content and change permission using chmod 755 lingbugs
#!/bin/bash export LD_ASSUME_KERNEL=2.4.1 DIR=$(dirname $0) cd "$DIR" if [ \! -e "$DIR/temp" ] ; then mkdir "$DIR/temp" fi if [ -e bugs.so ] ; then ./cbugs "$DIR" "$DIR/temp" "/bugs.so" else ./cbugs "$DIR" "$DIR/temp" "/brugs.so" fi - Create a file called Cbugs and compile it using
gcc -o cbugs CBugs.c -ldl -m32
. The file includes the following codes
/* GNU General Public Licence This small C program loads the bugs.so ELF shared library. Save it as a .c file and then compile it on Linux using gcc -o cbugs Cbugs.c -ldl */ #include <dlfcn.h> #include <stdio.h> #include <string.h> int main (int argc, char **argv) { void * handle; handle = dlopen("./bugs.so", RTLD_LAZY); if (handle) { dlclose(handle); } return 0; }
An example
- Start OpenBUGS by
./linbugs
in the OpenBUGS directory
- If OpenBUGS successfully run, you will see
OpenBUGS ClassicBUGS release 2.1.1 type 'modelQuit()' to quit Bugs>
- Then type in the following commands (those after >)
Bugs> modelCheck("Examples/Airmodel.txt") model is syntactically correct Bugs> modelData("Examples/Airdata.txt") data loaded Bugs> modelCompile() model compiled Bugs> modelInits("Examples/Airinits.txt") model is initialized Bugs> modelUpdate(100000) 100000 updates took 4 s Bugs> samplesSet("theta") monitor set Bugs> summarySet("theta") monitor set Bugs> modelUpdate(10000) 10000 updates took 0 s Bugs> samplesStats("theta") mean sd MC_error val2.5pc median val97.5pc start sample theta[1] -1.1 1.332 0.1092 -5.243 -0.7288 0.2504 101001 10000 theta[2] 0.05332 0.05231 0.004327 0.002579 0.03949 0.2046 101001 10000 Bugs> samplesCoda("*","output") CODA files written Bugs> modelQuit()
Useful links
Copy Tables from Excel to LyX
This is the way to copy tables from Excel to Lyx I found on the web.
- In LyX, insert a table with the same dimensions as the one in the excel.
- Place the mouse cursor in the top left cell of the table.
- From the menu of LyX, choose
Edit → Paste Special → Plain Text, Join Lines.
Welcome!
After I moved to the University of Notre Dame for 4 months, I finally found some time to set my ND website up. This does not replace my old website at http://www.psychstat.org/us because it is mainly for the classes I teach. And, unfortunately, for obvious reasons, the class pages cannot be accessed publicly. I will give authorization to the students in my classes. For those who are not on the roster of the classes and are still interested in accessing the class pages, you may have to contact me first to get the authorization.
Note. Everything on this blog only reflects my personal view which may or may not be true and is not related to any organization or institute.