How to setup xhost file

1. Create or edit the file "/etc/Xn.hosts" where 'n' is the display number of the server on the local host, normally 0, as in "/etc/X0.hosts".
   
   To deny all X access to your system, the file /etc/X0.hosts will contain a single character, "-".
   
   To grant access to hosts "host1.com" and "host2.com" and no other hosts the file /etc/X0.hosts will consist of:
   
   -
   +host1.com
   +host2.com
2. Search through all files in the directory /usr/lib/X11/xdm for occurances of the command "xhost +" or "/usr/bin/X11/xhost +". Remove or comment out all such lines.
3. Inform users that any xhost commands should be removed or commented out of user startup scripts, such as .cshrc, .login, .profile, etc.

Source: http://www.pseriestech.org/forum/rs6000/configure-xhost-files-109.html

Manual configuration of DNS in Ubuntu

(1) Open /etc/resolv.conf file:
vi /etc/resolv.conf

(2) Add your ISP nameserver as follows:

search isp.com
nameserver 202.30.38.101
nameserver 163.180.16.53.1

Note Max. three nameserver can be used/defined at a time.

How to make landscape documents or pages using LaTex

http://texblog.wordpress.com/2007/11/10/landscape-in-latex/

Adjusting space between items

\begin{itemize}\setlength{\itemsep}{-2mm}
\item
\end{itemize}

Inline figure in LaTex

\usepackage{wrapfig }

\begin{wrapfigure}{r}{0.4\textwidth}
\centering
\includegraphics[width=0.4\textwidth]{leadfield.eps}
\caption{Text wrap around figure}
\noindent
%\hrulefill
\label{test}
\end{wrapfigure}

Highest Impact Factor Journals in the category of Environmental Engineering

Mark	Rank	Abbreviated Journal Title (linked to journal information)	ISSN	Total Cites	Impact Factor	Immediacy Index	Articles	Cited Half-life
	1	APPL CATAL B-ENVIRON	0926-3373	10376	4.651	0.666	356	4.9
	2	ENVIRON SCI TECHNOL	0013-936X	51326	4.363	0.615	1202	6.2
	3	WATER RES	0043-1354	23992	3.427	0.353	485	6.9
	4	INDOOR AIR	0905-6947	1272	2.887	0.524	42	4.7
	5	J HAZARD MATER	0304-3894	6521	2.337	0.277	1039	3.6
	6	ECOL ENG	0925-8574	1786	2.175	0.384	112	5.8
	7	ENVIRON MODELL SOFTW	1364-8152	1748	2.099	0.976	165	3.4
	8	INT J LIFE CYCLE ASS	0948-3349	772	1.607	0.712	66	4.6
	9	J AIR WASTE MANAGE	1047-3289	3197	1.523	0.200	135	7.3
	10	OZONE-SCI ENG	0191-9512	784	1.515	0.109	55	8.1

Highest Impact Factor Journals in the category of Fluid & Plasma Physics

Mark	Rank	Abbreviated Journal Title (linked to journal information)	ISSN	Total Cites	Impact Factor	Immediacy Index	Articles	Cited Half-life
	1	ANNU REV FLUID MECH	0066-4189	4329	9.471	2.471	17	>10.0
	2	NUCL FUSION	0029-5515	6687	3.278	0.731	234	6.5
	3	PLASMA PHYS CONTR F	0741-3335	5479	3.070	0.346	234	5.4
	4	PHYS REV E	1539-3755	57936	2.483	0.504	2255	5.6
	5	PHYS PLASMAS	1070-664X	14648	2.325	0.534	794	5.3
	6	MICROFLUID NANOFLUID	1613-4982	299	2.241	0.586	70	2.2
	7	PLASMA PROCESS POLYM	1612-8850	441	2.132	0.494	83	2.3
	8	PLASMA SOURCES SCI T	0963-0252	2429	2.120	0.522	113	6.1
	9	J FLUID MECH	0022-1120	27263	2.026	0.413	501	>10.0
	10	PHYS FLUIDS	1070-6631	15514	1.780	0.217	567	>10.0

Highest Impact Factor Journals in the category of Applied Physics

Mark	Rank	Abbreviated Journal Title (linked to journal information)	ISSN	Total Cites	Impact Factor	Immediacy Index	Articles	Cited Half-life
	1	NAT MATER	1476-1122	13606	19.782	5.278	133	3.2
	2	MAT SCI ENG R	0927-796X	3114	14.400	0.167	6	6.2
	3	ADV FUNCT MATER	1616-301X	8320	7.496	0.683	461	2.9
	4	SMALL	1613-6810	2696	6.408	1.033	272	2.0
	5	MRS BULL	0883-7694	3836	5.168	1.468	79	6.0
	6	LASER PART BEAMS	0263-0346	1422	4.696	1.278	72	2.8
	7	ORG ELECTRON	1566-1199	924	3.879	0.386	101	3.1
	8	APPL PHYS LETT	0003-6951	157868	3.596	0.627	5818	5.4
	9	PROG ELECTROMAGN RES	1559-8985	1433	3.320	0.739	249	1.9
	10	NANOTECHNOLOGY	0957-4484	10839	3.310	0.461	1259	2.7

Highest Impact Factor Journals in the category of Chemical Engineering

Mark	Rank	Abbreviated Journal Title (linked to journal information)	ISSN	Total Cites	Impact Factor	Immediacy Index	Articles	Cited Half-life
	1	PROG ENERG COMBUST	0360-1285	1983	5.269	1.250	16	9.6
	2	J CATAL	0021-9517	27254	4.737	0.800	330	8.4
	3	APPL CATAL B-ENVIRON	0926-3373	10376	4.651	0.666	356	4.9
	4	DYES PIGMENTS	0143-7208	3024	2.796	0.501	349	4.6
	5	CATAL TODAY	0920-5861	15484	2.764	0.490	502	6.3
	6	P COMBUST INST	1540-7489	4714	2.647	0.593	383	7.8
	7	J MEMBRANE SCI	0376-7388	15786	2.432	0.346	537	6.6
	8	PROCESS BIOCHEM	1359-5113	6114	2.336	0.198	243	4.6
	9	J SUPERCRIT FLUID	0896-8446	2629	2.189	0.434	221	5.1
	10	COMBUST FLAME	0010-2180	7089	2.184	0.183	131	9.2