Generalization of covariance concept is discussed to be used among categorical and numerical data. Gini’s definition of the variance for categorical data gives us a starting point to treat this problem. The value difference in the original definition is changed to a vector in the value space. Then a new definition of covariance is introduced for categorical and numerical data. It can provide us...

The explosion of social networking websites in general, and Facebook in particular, impacts the educational context both positively and negatively. Too much time spent on Facebook leads to negative effects on the university work of students. The objectives of this research are to measure and analyse the relationship between the Facebook dependence and the negative consequences of the excessive ...

The recently-developed optimized binary compressive detection (OB-CD) strategy has been shown to be capable of using Raman spectral signatures to rapidly classify and quantify liquid samples and to image solid samples. Here we demonstrate that OB-CD can also be used to quantitatively separate Raman and fluorescence features, and thus facilitate Raman-based chemical analyses in the presence of f...

T he measurement of primary production in the ocean is key to our estimates of ecosystem function and the role of the ocean and its biota in the planetary carbon (C) cycle. Accurate estimates are critical to a broad suite ofbiological questions across a wide range of space and time scales. The methods developed to measure primary production reflect the diversity of our research interests and en...

TaO(x)-based memristors have recently demonstrated both subnanosecond resistance switching speeds and very high write/erase switching endurance. Here we show that the physical state variable that enables these properties is the oxygen concentration in a conduction channel, based on the measurement of the thermal coefficient of resistance of different TaO(x) memristor states and a set of referen...

Relationship between the datasets is one most important issue in recent years. The recent methods are based mostly on the numerical data, but these methods are not suitable for real time data such as web pages, business transactions etc., which are known as Categorical data. It is difficult to find relationship in categorical data. In this paper, a new approach is proposed for finding the relat...

This work compares two alternative methods for record linkage: distance based and probabilistic record linkage. It compares the performance of both approaches when data is categorical. To that end, a distance over ordinal and nominal scales is defined. The paper shows that, for categorical data, distance-based and probabilistic-based record linkage lead to similar results in relation to the num...

The textile plot is a parallel coordinate plot in which the ordering, locations and scales of the axes are simultaneously chosen so that the connecting lines, each of which represents a case, are aligned as horizontally as possible. Plots of this type can accommodate numerical data as well as ordered or unordered categorical data, or a mixture of these different data types. Knots and parallel w...

This paper presents an oscillometric blood pressure (BP) measurement approach based on the active control schemes of cuff pressure. Compared with conventional electronic BP instruments, the novelty of the proposed BP measurement approach is to utilize a variable volume chamber which actively and stably alters the cuff pressure during inflating or deflating cycles. The variable volume chamber is...

Weak lensing leads to the non-Gaussian magnification distribution of standard candles at given redshift z, p(μ, z). We derive an accurate and convenient analytical method for computing p(μ, z). Our method is based on the unique mapping between the magnification of a source and the local smoothness parameter α̃, the ratio of the density of matter smoothly distributed in the beam connecting the ob...