my technical points
Technology feed our world and am sure today's people need to know latest technical advancement happening around, so i am trying to help you here
Saturday, July 24, 2010
site investigation
Good site investigation is a prerequisite for all construction purpose and its important initial step to for a construction.and based on site investigation we can make an understood of soil conditions and can take corresponding action require to overcome any undesirable behavior soil causes a big collapse or failure , i here try depicts some facts about site investigation
Main Problems of Soils are reactive clays, soft soils, sink holes, etc.
Soil data required for site investigation is :
1. Soil profile (like layer thickness and soil identification...etc)
2. Index properties (like water content, Atterberg limits, etc)
3. Strength & compressibility characteristics (like c’, cu, φ’, Cc, Cr, OCR ...etc)
4.Others (like water table depth,rock depth...etc)
Desk Study
its the first stage of site investigation. having Negligible cost procedures.Desk Study include
1.Aerial photographs
2.Topographical maps
3.Existing site investigation reports (for near by sites)
4.Other info. (from local councils, literature..etc)
Site Reconnaissance
its the next step of site investigation here we do mainly site visit and chat with locals and collect following details
1.Site access
2.Topography
3.Site geology
4.Conditions of adjacent structures
5.Any obvious problems foreseen?
then we make trial pit with 1-2 m width and 2-4 m depth for Enables visual inspection and locating strata boundaries and access for undisturbed block samples or drill a rig with Bore hole 75 mm dia and 10-30 m depth for the same reason ,then collect undisturbed clay samples in a thin walled sampler its Required for triaxial, consolidation tests in the lab
Monday, July 19, 2010
about spam
hey today i am saying something about "Spam" its one of the irritating experience for email users
Friday, July 9, 2010
steganography techniques
Here i present some important point regards Steganography and its techniques
What is Steganography?
Steganography is the science and art of hiding data in communication.
In the olden days , people used invisible ink and hidden tattoos to pass hidden Steganographic content. Now a days, computer and network technologies give us easy-to-use communication channels for Steganography.
Difference Between Steganography and Other technologies
Steganography & Cryptography
Steganography and Cryptography are two distinct techniques, however, they can be used together to add an extra layer of security.
Basically, Steganography techniques conceal the existence of hidden messages, while cryptography techniques don’t.
Steganography & watermarking
Watermarking allows us to prevent infringers from stealing our document rights.
Watermarks are explicit; everyone can see them.
Steganography is used to protect papers’ copy rights without watermarking.
Major Techniques Used in Steganography is
1.Word shifting.
2.Line shifting.
3.Feature coding
And There are two major word shifting techniques
1. Shifting spaces.
2.Shifting specific words
1.Shifting spaces
Shifting a word by one point represents a “0”, while shifting it by two points represents a “1”
Example:
We want to hide : “0110110” in :
We explore new steganographic and cryptographic algorithms and techniques throughout the world to produce wide variety and security in the electronic web called the Internet.
2.Shifting specific words
The words we want to stress out are shifted by one point, that is expanding the space before them and condensing the space after them by one point.
Example:
We explore new steganographic and cryptographic algorithms and techniques throughout the world to produce wide variety and security in the electronic web called the Internet.