subequation numbering in LaTex

\begin{subequations}\label{E0116}
\begin{eqnarray}
u &\simeq& \gamma_0 y \\
v &\simeq& v_w\left(x\right)
\end{eqnarray}
\end{subequations}

/newcommand

\documentclass[letterpaper]{article}

\newcommand{\tcol}[1]{\textcolor{blue}{#1}}

\begin{document}

A \tcol{command} usually begins with a backslash.

\end{document}

==================
General Usage
==================

\newcommand{cmd}[args]{definition}
\newcommand{cmd}[args][default]{definition}
\renewcommand{cmd}[args]{definition}
\renewcommand{cmd}[args][default]{definition}

These commands define (or redefine) a command.

cmd

A command name beginning with a \. For \newcommand it must not be already defined and must not begin with \end; for \renewcommand it must already be defined.

args

An integer from 1 to 9 denoting the number of arguments of the command being defined. The default is for the command to have no arguments.

def

If this optional parameter is present, it means that the command's first argument is optional. The default value of the optional argument is def.

definition

The text to be substituted for every occurrence of cmd; a parameter of the form #n in cmd is replaced by the text of the nth argument when this substitution takes place.

Ubuntu CJK Chinese Japanese Korean Input Guide

source http://www.mrbass.org/linux/ubuntu/scim/

sudo apt-get install uim anthy scim-gtk2-immodule scim-uim scim-chinese scim-hangul scim-tables-zh scim-tables-ja scim-tables-ko

sudo touch /etc/X11/Xsession.d/74custom-scim_startup

sudo chmod 646 /etc/X11/Xsession.d/74custom-scim_startup

echo 'export XMODIFIERS="@im=SCIM"' >> /etc/X11/Xsession.d/74custom-scim_startup

echo 'export GTK_IM_MODULE="scim"' >> /etc/X11/Xsession.d/74custom-scim_startup

echo 'export XIM_PROGRAM="scim -d"' >> /etc/X11/Xsession.d/74custom-scim_startup

echo 'export QT_IM_MODULE="scim"' >> /etc/X11/Xsession.d/74custom-scim_startup

sudo chmod 644 /etc/X11/Xsession.d/74custom-scim_startup


sudo touch ~/.kde/Autostart/startscim

echo "#!/bin/sh" >> ~/.kde/Autostart/startscim

echo "scim -d" >> ~/.kde/Autostart/startscim

sudo chmod 745 ~/.kde/Autostart/startscim



Press CTRL-SPACE to bring up SCIM input methods.

Projector configuration with Ubuntu

I had a trouble with Ubuntu in terms of using a projector due to resolution. Modifying xorg.conf might be a little dangerous. The following command led me to configure a projector using the 1024x768 mode.


sudo dpkg-reconfigure -phigh xserver-xorg

pdftk tools

Merge Two or More PDFs into a New Document
pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf

or (Using Handles):
pdftk A=1.pdf B=2.pdf cat A B output 12.pdf

or (Using Wildcards):
pdftk *.pdf cat output combined.pdf

Split Select Pages from Multiple PDFs into a New Document
pdftk A=one.pdf B=two.pdf cat A1-7 B1-5 A8 output combined.pdf

Encrypt a PDF using 128-Bit Strength (the Default) and Withhold All Permissions (the Default)
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foopass

Same as Above, Except a Password is Required to Open the PDF
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz

Same as Above, Except Printing is Allowed (after the PDF is Open)
pdftk mydoc.pdf output mydoc.128.pdf owner_pw foo user_pw baz allow printing

Decrypt a PDF
pdftk secured.pdf input_pw foopass output unsecured.pdf

Join Two Files, One of Which is Encrypted (the Output is Not Encrypted)
pdftk A=secured.pdf mydoc.pdf input_pw A=foopass cat output combined.pdf

Uncompress PDF Page Streams for Editing the PDF Code in a Text Editor
pdftk mydoc.pdf output mydoc.clear.pdf uncompress

Repair a PDF's Corrupted XREF Table and Stream Lengths (If Possible)
pdftk broken.pdf output fixed.pdf

Burst a Single PDF Document into Single Pages and Report its Data to doc_data.txt
pdftk mydoc.pdf burst

Report on PDF Document Metadata, Bookmarks and Page Labels
pdftk mydoc.pdf dump_data output report.txt

Fast OS Switching

WINDOWS VISTA AERO VS LINUX UBUNTU BERYL

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