random gyan

A software system can be categorize as open if it specifies and publishes interface between its system components.

Colors	Waveelength(nm)	Frequency(x10^14)
Violet	380-450	6.6-7.9
Blue	450-490	6.1-6.6
Green	490-560	5.4-6.1
Yellow	560-590	5.1-5.4
Orange	590-630	4.8-5.1
Red	630-760	3.9-4.8

Color is described by
1 -brightness
2 -hue
3 -depth of color

The resources where information objects are stored so that they remain sharable across the network are called SERVERS.

Types of Compression :
1. Lossless
1.1 - RLE
1.2 - CCITT Group 3 1D
1.3 - CCITT Group 3 2D
1.4 - lEMPEL ZIV & wELCH aLGORITHM [LZW]

2. Lossy
2.1 - JPEG
2.1 - MPEG
2.1 - Intel DVI (Digital Video Interface)
2.1 - CCITT H.261
2.1 - Fractals

A model is an abstraction of the information objects and the functions
Models are buuilt for a variety of Designs.
A good design helps in achieving optimum performance.

Topology option depends on:
1 - Application
2 - Size of Organisation
3 - Topology and Distributed System
4 - Location of various data servers

something about Security

The principal mechanism for ensuring secure communication is that of a secure channel.

A security policy descibes precisely which actions the entities in a system are allowed to take.

Security means Dependibility. i.e.
1 - Reliability
2 - Availibity
3 - Maintainablity
4 - Trust(Security)
  4.1 - Confidentiality
  4.2 - Integrity

Factors for Security
1 - Confidentiality
2 - Integrityy
3 - Availibility

Threats For Security
1 - Interception (unauthorized x confidential)
2 - Interruption (unavailable x available)
3 - Modification (unauthorized x integrity by authentication)
4 - Fabrication (modification of data)

Basic Security Mechanism :
1 - Encryption
2 - Authentication
3 - Authorization
4 - Auditing

Things/Assets to be protected
1 - Data
2 - Hardware
3 - Software


Controlling levels :
1 - User level : Software - Authentication and Encryption
  Hardware - Smart Card etc.
2 - Program level : Writing Secure Code, by OS, Policies,   Administration, Auditing
3 - OS level : Memory, File, user Authentication(PWD OR Challenge Response), AccessControl
4 - Network level : Hardware - Firewall, Caling, IDS
        Software - Encryption.
5 - Database level : Query, Recoed, Storage Media
6 - Admin Level : Organize, Authorize, Manage, AccessControl, Audit
7 - Legal, Policy, Ethical

Just a single click

Please visit this site only once a day...bhookh.com
http://www.bhookh.com/

Ecological footprint

For every kind of energy or matter we consume to maintain our lifestyles, some natural resource, somewhere, gets used up, and waste is produced. The city is an ecosystem, with inputs in the form of land, water, energy, food and materials from the hinterland which, after being utilised, become waste, the output.

The Ecological Footprint is a measure of the load imposed by a particular population or economy on nature. It represents the land (and water) area necessary to sustain current levels of resource consumption and waste discharge by that population. It is an accounting tool that allows us to estimate the resource consumption and waste assimilation requirements of a particular human population or economy in terms of corresponding productive land area.

My Ecological Footprint was:

Food 0.3
Mobility 0.3
Shelter 0.6
Goods/Services 0.2
-------------- ---
Total footprint 1.5

Please make a visit at www.myfootprint.org.. to calculate ur ecological footprints and read the comments!!
"js chkout aap kitne dharti par boj ho" hehe...

renaming the blog

guys i was just thinking of renaming the blog.
this is because its no more an e news blog.
it has became a discussion blog.
so plz suggest some names.
start commenting.

social networking war - from my point of view

hmmm what should i start with now. The thing is, there is someting going on in my mind this days. There is THIS type of sites which help us to stay in touch with each others. I mean friends and relatives. And i swear it really helps. I really met some of my old friends, thnx to a web site which provides this kind of facility. Now this type of sites are called Social Networking WebSites. I am here not to favor any of them, but its a discsussion of whats goin in the web market.

Well i will not name the name of the Sites, but let me name the biggies who are behind this projects. Currently i am only focusing on theBIG THREE as i term them "Microsoft, Yahoo and Google".

OK so it all started with the BLOG war. Google acquired Blogger.com. Yahoo started yahoo 360. Microsoft started spaces.microsoft.com.

Well yahoo 360 is not a core blog concept, but currently lets assume it as a blog site. This is because yahoo doesnt have a site dedicated to WEB LOGGING(Blog)

Oh Ghosh!!!, let me be back on the topic, otherwise i will reach on to some other discussion. So after bloging came this image posting sites.Here yahoo was first to buy out Flickr, which is currently the best in this market.Ofcourse there was images.yahoo.com, but nobody bothered to look at it.Fortunately Microsoft and Google doesnt need this kind of site, since their blogging counterpart already supportes image posting.

All this and many other sites were acquired, to reach to a final goal of what is think is THE SOCIAL NETWORKING SITES. Google was affiliated with Orkut. Yahoo acquired Del.icuo.us and Upcoming.org. There were also some contenders who probably pioneerd this concept. Likewise we have Ringo, Birthday alarm, HI5 etc. Somehow these sites doesnt clicked. They were bulky, very very slow in operation. But the concept was awesome.

Beware, we are now at the start of the war between the BIG THREE on this concept. Orkut is currenlty leading the three. Orkut is the best of these. Though it was not a child of those Googlers, but the way it was made, is perfect to get affiliated with google. It has those caharacterstics of Google: Simplicity, Fantastic Interface and Navigational Facility. Also the site is very quick. Kudos to ORKUT, the guy who created this genius. But one thing you people can relate him is, he is also from Stanford, Gotch ya!!!. These stanford people are going to rule the world in near future, hahaha!!!. Now is YAHOO's turn. It has integrated all of its acquisitions and sites to yahoo 360. Also the blog in yahoo 360 can be directly integrated to your geocities account. So all thing comes to a single point Yahoo 360. Now this have many features of a social networking site other then just blogging.Very nicely organised, ofcourse its yahoo, the ppl who pioneered the INTERNET.

Hence comes the turn of the GIANT. Yes you people guessed it right. THE NAME IS "microsoft". How can it be left behind. Microsoft has way behind started a site named WALLOP.com. It was just a simple blogging site, but with some unique features of connecting with friends. This site was one of the best because it was totally on MACROMEDIA FLASH. The interface was mind blowing. But now after a long time when i went to this site, there was nothing. Only there is meassage for the people, that they are getting ready for the war. JUST visit the website its FANTASTIC. Now only GOD can predict how will microsoft will turn this whole concept into. WAIT and WATCH.

Above article is just my floow of thoughts on the topic. Its not supporting any side. The article its just my perception and assumptios. So some of the facts may be worng or uncomplete.

If you people have read this whole article completely, thank you very much for taking time to read it.Well the thank should be more for bearing my mistakes if any.
I will be very obliged to improve on your positive comments/suggestion. just fell Free to comment on any aspect, since this my first article of any type and od such a lenght. THANKS A LOT in advance.

you ppl can even mail me on email2amol@gmail.com

OPERA launches a new version 9.

Hi guys, my first post on this blog. Being a technology enthusiast and an internet freak, I have always been exploring new software being introduced to the internet community. With reference to the previous post that discusses about the free software, I would like to comment on an important part of the internet users life - the internet browser. Previously, like all software, browsers were bundled with Oses. But with Firefox and a host of others giving free downloads of their feature-rich browsers, users are now faced with a plethora of options to choose from.
Arguably, Microsoft Corpn.'s Internet Explorer, Mozilla's Firefox have been on the forefront. Internet Explorer, now available in version 7 and Firefox in it's 1.5 version have taken up most of the market. But a long time player has now come up with it's new version in a bid to capture a chunk of the browser pie. This new entrant is Opera v9.

The next part of the post has been taken from the News.com website - http://news.com.com/Opera+releases+beta+of+latest+browser/2100-1032_3-6063153.html?tag=nl

Opera Software on Thursday released a beta version of its free browser, Opera 9, which offers features such as small Web applications and content blocking.

The beta for Opera 9 will include six new features ranging from Widgets, or small Web programs, to support for download technology BitTorrent to customization of search engines.

"Opera 9 brings powerful new features to enhance the Web browsing experience and empower Web 2.0 developers," Jon Tetzchner, Opera chief executive, said in a statement. The small Web applications will range from streaming news to games to multimedia capabilities and allow developers to also create their own and share them, without regard to the operating system.

Opera 9 also aims to allow users to click a torrent file and begin its download without having to rely on a separate BitTorrent application for downloading large files. Users will also have the option of customizing which search engine to use with their browser and the ability to block content, such as certain ads or images, on a particular Web page. Other features are designed to enable users to open a number of tabs at once in Opera 9 and view the contents via a thumbnail preview or image.

Users are encouraged to try put this version of the software and post their reviews here.

What is Free Software

Free software is defined as software that respects four fundamental freedoms:
(0) freedom to run the software as you wish,
(1) freedom to study the source code and modify it to do what you wish,
(2) freedom to make and redistribute copies, and
(3) freedom to publish modified versions.
Only programmers can directly exercise freedoms 1 and 3, but all users can exercise freedoms 0 and 2, and all users benefit from the modifications that programmers write and publish.

DOS Flavours

DR-DOS Caldera DOS (Previously Digial-Reseach, then Novell DOS)
FreeDOS Freeware DOS Project (in beta)
MS-DOS Microsoft's DOS
PC-DOS IBM's DOS
PTS DOS 2000 Paragon Software's DOS
ROM-DOS Datalight's DOS PC-DOS clone for ROMs
RxDOS DOS by Mike Podanoffsky

Linux Flavours

-Corel Linux For desktops, GUI install
-Debian Linux Stable Workstation or Server
-Gentoo Linux that can be automatically optimized and customized
-Immunix All-in-one workgroup server
-Knoppix A run directly from CD Linux
-Linspire/Lindows GUI Workstation.
-Linux OS Professional Extensive Slackware package with 14 CDs, 2000 pages of docs
-Linux-Mandrake Workstation and Server, w/StarOffice
-LuteLinux Workstation and Server with Office like suite (as of 2003, the site does not seem to have changed since late 2000 and the company may be inactive)

-Minux A very compact OS which is perfect for educational situations
-OpenLinux Caldera Workstation and Server
-Red Hat Linux Workstation and Server and other editions
-Slackware Linux Non-commerical Linux
-Stampede Fast and easy Linux (development stopped in March 2002)
-Storm Linux Linux based on Debian (inactive since Apr-2001)
-SuSE Linux Workstation and Server, GUI install
-TurboLinux Workstation, Server and Multiple Cluster Server editions
-Xandros Workstation and Server