This paper discusses a new method of hiding ASCII characters based on match between bit value of the randomly selected image pixel and the data bits. Bit positions in the higher nibbles of the cover image are used for data hiding at a position indicated using a 2-bit code. Simulation results on Lena, Gibbon and Cat images [1] for hiding a large set of ASCII text characters indicate that suggest...

Security is the main concern in today’s world due to the rapid growth of information technology. In this research work, the steganographic is the method or process in which the useful information or data, concealing into another form such as image, text, audio and video. The main concern in this work is to provide the confidentiality, availability, integrity and authenticity of information. In ...

Practical considerations for choosing between Tobit, symmetrically censored least squares (SCLS) and censored least absolute deviations (CLAD) estimators are offered. Practical considerations deal with when a Hausman test is better than a conditional moment test for judging the severity of a misspecification, the need to bootstrap the sampling distributions of theHausman tests, what to look for...

In this paper, a new Image Steganography method based on the spatial Domain is proposed. It does not use the known LSB’s bit to embed the message. It uses the bit 7 of pixel value of cover image. The main idea is to make the bit 7 of pixel value equal to the message bit by adding or subtracting 1 to the pixel value. Our method is imperceptible to HVS because it provides minimum degradation in i...

most contemporary clinical reasoning tests typically assess non-automatic thinking. therefore, a test is needed to measure automatic reasoning or pattern recognition, which has been largely neglected in clinical reasoning tests. the puzzle test (pt) is dedicated to assess automatic clinical reasoning in routine situations. this test has been introduced first in 2009 by monajemi et al in the oly...

background: objective structured clinical examination (osce) is one of the best methods of evaluating the achievement of domains such as educational objectives and cognitive, emotional, and psycho-motor aspects of medical students. according to available evidences, no study has been conducted  on the evaluating of osce in midwifery students. the main purpose of this study was the evaluation of ...

In this paper, an effective video watermarking method based on H.264/AVC was proposed. We select Intra_4×4 and Intra_16×16 as the embedding target, each macroblock would be embedded into 1 bit watermark. In Intra_4×4, we explorer the characteristic of the DCT coefficient and adjust them to embed watermark while in Intra_16×16 we modulate the LSB bit of the DC coefficient to realize watermark in...