VOLUME 15, 2018

CONTENTS

 

Корица и начални страници

 

 

Mathematics

Ivanka Angelova..................................................................................................................... 7

Fourth-order difference schemes for two points boundary value problem of a fourth order

degenerate differential equation

Tsetska Rashkova............................................................................................................... 14

Various aspects of PI-Theory

 

 

Informatics

Valentin Velikov, Dimitar Mihaylov....................................................................................... 34

Home and office security tracking via mobile devices

Victoria Rashkova, Valentin Iliev.......................................................................................... 43

Web-based system  to reflect the movement of trainee students and track the realization

of graduate students

 

 

 

Physics

Galina Krumova.................................................................................................................... 49

Contemporary trends in nuclear symmetry energy investigation

Galina Krumova.................................................................................................................... 58

Remarkable anniversaries