New method developed to hide data on computer hard drive

Physics Today ◽  
2011 ◽  
Keyword(s):  
New Method ◽  
Hard Drive ◽  
Hide Data

scholarly journals Position Identification using Dihedral Function for Data Hiding

2019 ◽  
Vol 8 (2S4) ◽  
pp. 191-195
Keyword(s):  
Data Hiding ◽  
Window Size ◽  
New Method ◽  
Chi Square ◽  
Hide Data

Data hiding techniques can be used for protecting data from unauthorized users. Here, data hiding technique called steganography is used to prevent illegal access of data. We introduced a new method of hiding data in images by randomly selecting pixel position using dihedral function. We have used different window size to hide data and applied variable dihedral function based on the size of variable. The security of this approach lies in the knowledge of window size and the function. The performance of our method was analyzed using Chi-square, RS steganalysis attack and histogram attack. The quality of the image was also preserved and found to be 52 dB.

Selective Sampling and Orientation of Non-Homogeneous Tissues

1968 ◽  
Vol 26 ◽  
pp. 98-99
Author(s):  
C. C. Clawson ◽  
L. W. Anderson ◽  
R. A. Good
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Light Microscopy ◽  
Random Sampling ◽  
New Method ◽  
Microscope Examination ◽  
Small Areas ◽  
Selective Sampling ◽  
Large Numbers ◽  
Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

A new method for the determination of nitrates

1960 ◽  
Vol 23 ◽  
pp. 227-232 ◽  
Author(s):  
P WEST ◽  
G LYLES
Keyword(s):  
New Method
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