VOLUME 5/2020, ISSUE 1

This work is licensed under a Creative Commons Attribution 4.0 International License. The Journal is included in the international database: – DOAJ (Directory of Open Access Journals) -EBSCO

Editor-in-chief: Valeriu V. JINESCU  University Politehnica of Bucharest Co-editor: Florin Teodor TANASESCU University Politehnica of Bucharest Honorary editor: Mihai MIHAITA President of Technical Sciences Academy of RomaniaManaging editor: Ioan Ganea AGIR Publishing House Journal of Engineering Sciences and Innovation is a quarterly multidisciplinary scientific journal, print and electronic: – covers all disciplines of engineering sciences; – free of charge. No processing and submission charges; – open access; – hard copy version, ISSN 2601 -6699; – on-line version, ISSN-L2537 – 320X; – high visibility, anyone can read and/or download a paper; – jesi@astr.ro

CONTENTS

A. Mechanical Engineering

Ion Bostan, Valeriu Dulgheru, Viorel Bostan
Analytic description of teeth profile of gears with rollers ab and justification of precessional gear parameters selection a

1

B. Chemical Engineering, Materials Science and Engineering

Andrei Sarbu, Anamaria Zaharia, Anita Laura Radu, Teodor Sandu, Tanta Verona Iordache, Paul Vasilescu, Gheorghita Jinescu, Crina Thea Cojocaru
Polymer inorganic- organic composites- precursors for ceramic powders and products

9

Marioara Abrudeanu, Gabriel Neacșu, Andreea Elena Roșu, Iustin-Alexandru Popa, Daniel-Constantin Anghel, Vasile Rizea, Daniel Alin Rizea, Mihai Branzei, Gabriela Adriana Plaiasu, Luminita Constantinescu, Cătălin-Marian Ducu
The influence of thermal shock at high temperature on Zy-4 alloy

21

Teodor Alexandra, Chiojdoiu Alexandru-Florin, Anghel Ion, Panaitescu Valeriu Nicolae
Influence of heat release rate on the temperature of the hot gas layer in closed spaces

33

D. Civil Engineering and Transport Engineering

Costescu Marian Dan
Autonomous vehicles in mixed traffic: Accounting for human reactions, modelling the Anticipated Safe Distance

41

Dan Precupanu, Codrin Precupanu
Optimization criteria in the structural elements design for concrete industrial roofs. -Reinforced (prestressed) concrete structures

57

E. Electrical and Electronics Engineering

Alexandru Woinaroschy
Personal considerations about creativity and artificial intelligence

63

E. Electrical and Electronics Engineering

Omar Lahchava, Nicolae Ilias
Calculation of railway tunnels ventilation

69

AGIR Publishing House