Statistics is a science that provides precise techniques for collecting and sorting information made easy by tools and methods for further analysis. The object of descriptive statistics, from sample data, is to describe the most important characteristics, by which we refer to those amounts that provide information on the topic of interest which we are studying.

The goal of my presentation is to explain what Descriptive Geometry is good for and in which way the Descriptive Geometry education is carried out in European countries. By definition, Descriptive Geometry is a method to study 3D geometry through 2D images. It provides insight into structure and metrical properties of spatial objects, processes and principles. According to this, Descriptive Geo...

the purpose of this research is to explain the model of psychological empowerment of the employees based on thinking way of the managers in general office of sports and youths in isfahan. the method of this research was descriptive-explanatory in terms of data collection and applied in terms of purpose and field in terms of conducting. statistical society of this research consisted of the manag...

Context-free tree grammars, originally introduced by Rounds ((Rounds, 1970)), are powerful grammar devices for the definition of tree languages. In the present paper, we consider a subclass of the class of context-free tree languages, namely the class of monadic simple context-free tree languages. For this class of context-free tree languages, a faithful rendering of extended TAGs, we show that...

Acknowledgements : many thanks to professor Giovanni Pighizzini for its welcome and for having directed my internship. Many thanks also to Carlo Mereghetti and Beatrice Palano and all organizing committee of NCMA workshop for having given me the possibility to assist at this workshop. Many thanks also to Viliam Geffert for his contribution to our work. Thanks to Antonio Capoduro for coffees and...

For tabled Lindenmayer systems and their languages, the degree of synchronization and the degree of nondeterminism are well investigated measures of descriptional complexity. In this paper the sequential counterparts of tabled Lindenmayer systems, namely cooperating distributed grammar systems and their pure variant (working in the so called t-mode of derivation) are treated with respect to the...

In a designated verifier signature (DVS) scheme a signer creates a signature which is only verifiable by a designated verifier. A DVS is a useful scheme for authenticating a signer without disturbing her privacy. In a universal DVS (UDVS) scheme, everyone who holds Alice’s traditional signature on a message (the signature holder), is able to transform it to a DVS for a specific verifier. Non-de...