We use a model of galaxy disk formation to explore the metallicities, dust content, and neutral-gas mass density of damped Lyman-α (DLyα) absorbers. We find that the [Zn/H] abundance measurements of DLyα systems now available can be reproduced either by a population of low surface brightness (LSB) galaxies forming at redshifts z > 3, whose chemical contents evolve slowly with time and whose sta...

Beenish Siddiqui1, Sudhir Goswami 3 1Student, Department of CSE, M.tech, Meerut Institute of Engg. & Technology, Uttar Pradesh, India. 2Associate Professor, Department of CSE, Meerut Institute of Engg & Technology, Uttar Pradesh, India. ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract: Informatio...

We presentUBV I surface photometry of a sample of low surface brightness (LSB) disk galaxies. LSB disk galaxies are fairly well described as exponential disks with no preferred value for either scale length, central surface brightness, or rotational velocity. Indeed, the distribution of scale lengths is indistinguishable from that of high surface brightness spirals, indicating that dynamically ...

This paper presents analysis of Least Significant Bit (LSB) based Steganography and Discrete Cosine Transform (DCT) based Steganography. LSB based Steganography embed the text message in least significant bits of digital picture. Least significant bit (LSB) insertion is a common, simple approach to embedding information in a cover file. Unfortunately, it is vulnerable to even a small image mani...

Massive low surface brightness galaxies have disk central surface brightnesses at least one magnitude fainter than the night sky, but total magnitudes and masses that show they are among the largest galaxies known. Like all low surface brightness (LSB) galaxies, massive LSB galaxies are often in the midst of star formation yet their stellar light has remained diffuse, raising the question of ho...

<strong><em>Steganography is a technique or art to hide secret message into cover so that the existence of cannot be known by other people third parties who do not have ability know contents message. The Least Significant Bit (LSB) method one methods used in steganography changing value rightmost bit stego with purpose this study was text an image using LSB method.</em></st...

Steganography is the science of hiding secret data inside another type as image and text. This known carrier data; it lets people interconnect secretly. suggested paper aims to design a Biometric Imaging System (SBIS). The system constructed in hybridization manner between processing, steganography, artificial intelligence techniques. During processing techniques receives RGB foot-tip images pr...

This research proposes a method to enhance the payload message by embedding messages on dilated edge areas Least Significant Bit (LSB) method. To add security aspects messages, are not embedded directly LSB but encrypted with XOR operations Most (MSB). The experimental results of test in this study showed that dilation process some extent can increase 18.65% and average bpp is 1.42 while mainta...

In digital steganography normally image, audio or video files are the standard cover files or the host files for embedding secret message such as text, image, audio or video. Nath et al.(2) explored the standard method for hiding secret message inside standard cover files such as image, audio or video files. In the present work we have shown how we can hide secret message in encrypted form in s...