Using B, R and Hα images of roughly equal-sized samples of low surface brightness (LSB) and high surface brightness (HSB) galaxies (∼40 galaxies apiece), we have explored the dependence of H II region properties on local and global disc surface brightness. We have done this by constructing co-added H II region luminosity functions (LFs) according to local and central disc surface brightness and...

Brandon J Rose1, Robert E Seegmiller2, Laura C Bridgewater3 and David L Kooyman1* 1Department of Physiology and Developmental Biology, Brigham Young University, 4005 LSB, Provo, USA 2College of Dental Medicine, Roseman University of Health Sciences, South Jordan, USA 3Department of Microbiology and Molecular Biology, Brigham Young University, 4007 LSB, Provo, USA *Corresponding author: David L ...

In this paper, RSA algorithm is used to encrypt the secret message and advanced LSB technique is used to hide the encrypted message. Firstly, the message is encrypted and then encrypted message is being divided in two parts. First part of the encrypted message is xored with odd position and second part with even position of LSB+1. After that the xored encrypted message is being hidden on LSB po...

In image steganography, a pixel can carry secret bits by choosing adding/subtracting one to/from the gray value. This kind of “ 1 steganography” can hide a longer message than simple LSB embedding. We propose a double-layered embedding method for implementing “ 1 steganography,” in which binary covering codes and wet paper codes are used to hide messages in the LSB plane and the second LSB plan...

Data hiding is the process of embedding data into a media form such as image, voice, and video. The Lest Significant Bit (LSB) is consider as the most widely used embedding technique. LSB embeds the secret message's bits into the least significant bit plane of the image in a sequentially manner . The LSB is simple, but it poses some critical issues. The secret message is easily detected and att...

An ADC operation and signal processing scheme in the error measurement mode has been developed to determine error coefficients. A preliminary experiment was performed by using an ADC test circuit to verify the scheme’s effectiveness for precise and dynamic digital calibration. The calibration process was performed by using the evaluated values of error coefficients in the proposed way, and the ...

Context. Low metallicities, large gas-to-star mass ratios, and blue colors of most low surface brightness (LSB) galaxies imply that these systems may be younger than their high surface brightness counterparts. Aims. We seek to find observational signatures that can help to constrain the age of blue LSB galaxies. Methods. We use numerical hydrodynamic modelling to study the long-term (∼ 13 Gyr) ...

Linearity is a critical measurement for overall performance of digital-to-analog converters (DAC) in mixed-signal system-on-chips (SoCs). Device parameters become more difficult to control due to variations from fabrication process with deep sub-micron technology. Such parameters also continue to degrade after fabrication as time elapses. Process variations of DACs are major source of non-linea...

This paper is part of a series of publications which present a systematic study of Blue Compact Dwarf (BCD) Galaxies in the Near Infrared (NIR). Compared to the visible light, NIR data allow a better separation of the starburst emission from the light distribution of the old stellar low-surface brightness (LSB) host galaxy. We analyze deep NIR broad band images of a sample of 11 BCDs, observed ...

Steganalysis of least significant bit (LSB) embedded images in spatial domain has been investigated extensively over the past decade and most well-known LSB steganography methods have been shown to be detectable. However, according to the latest findings in the area, two major issues of very low-rate (VLR) embedding and content-adaptive steganography have remained hard to resolve. The problem o...