One of the purposes of the introductory physics laboratory is to train the student in the presentation and analysis of experimental data. The two forms commonly used to present data are the tabular form and the graphical form. In general, the tabular form is used when experimental observations are being recorded. To summarize observations, either the tabular form or the graphical form might be ...

A new combinatorial characterization of a gray-tone image called Euler Vector is proposed. Euler number of a binary image is a well-known topological feature, which remains invariant under translation, rotation, scaling, and rubber-sheet transformation of the image. Euler vector comprises of a 4-tuple, where each element is an integer representing the Euler number of the partial binary image fo...

This article reports an analysis of purchase records over three years that was designed to test the extendibility of previous findings for brand loyalty and switching in the new context of China. It shows that Chinese consumers are most likely to switch brands of television when they buy a new set, and generally switch to larger, growing brands, a pattern common to other markets. This research ...

Speakers may use pitch accents as pointers to new information, or as signals of a contrast relation between the accented item and a limited set of alternatives. Some people claim that contrastive accents are more emphatic than newness accents and have a different melodic shape. Others, however, maintain that contrastiveness can only be determined by looking at how accents are distributed in an ...

A novel steganographic scheme is proposed which avoids asymmetry inherent in conventional LSB embedding techniques so that abnormality in the image histogram is kept minimum. The proposed technique is capable of resisting the χ test and RS analysis, as well as a new steganalytic method named GPC analysis as introduced in this paper. In the described steganographic technique, a pair of mutually ...

We have measured the temperature and field dependence of the AFMR-linewidth in Rb2MnC14 and similar antiferromagnets in the millimeter wave range. An essential difference in the behaviour of the linewidths for the transition AF/P and SF/P is explained by the different character of the 4Fand SF-phase.

Median filters and rank-order filters are generally considered to be more time consuming than, e.g., averaging filters. With the new algorithm presented in this report the opposite turns out to be true. The median (or any other rank-order value) is obtained by examining the bits of the arguments columnwise starting with the most significant bits. Hardware implementations suitable for parallel p...

There are kinds of multimedia can be accessed conveniently in social networks. Some of multimedia may be used to hiding harmful information. We consider the problem of estimating the stego key used for hiding using least significant bit (LSB) paradigm, which has been proved much difficult than detecting the hidden message. Previous framework for stego key search was provided by the theory of hy...

Background: Breastfeeding self-efficacy is a modifiable factor that can increase breastfeeding success and duration. Breastfeeding support programmes help to improve self-efficacy and to facilitate a longer duration of breastfeeding. Aims: The aim of this study was to evaluate the effect of antenatal breastfeeding education on breastfeeding self-efficacy and breastfeeding success. Methodology: ...

Understanding the nature of the constant π, as well as trying to estimate its value to more and more decimal places has engaged a phenomenal energy from mathematicians from all periods of history and from most civilizations. In this small overview, we have tried to collect as many as possible major calculations of the most famous mathematical constant, including the methods used and references ...