Proceedings of the Romanian Academy

Series A: Mathematics, Physics, Technical Sciences, Information Science

Journal published by the Romanian Academy

Volume 24, Number 1
January - March 2023

MATHEMATICS

Raouf FAKHFAKH, Fermi convolution and variance function

3

Sizhong ZHOU, Quanru PAN, Lan Isolated toughness for fractional (2;b;k)-critical covered graphs

11

Ismat BEG, Representation of a preference relation on convex metric spaces by a numerical function

19

PHYSICS

Mahassen H. ELBLBEISI, Mohammed M. SHABAT, Study of solar cells structures based on perovskite and nanoparticles

27

Vitalie LUNGU, Marina-Aura DARIESCU, Circular geodesics in Mannheim-Kazanas spacetime

35

H. COMISEL, C. HATEGAN, R.A. IONESCU, H.H. WOLTER, On single particle states and resonances in multichannel reactions

43

TECHNICAL SCIENCES

Zhen WEI, Ke YANG, Litong DOU, Jiqiang ZHANG, Shuxin HE, Water effect on energy evolution and fractal characteristics of coal samples under impact loading

51

Rareş SAVA, Dragoş Alexandru APOSTOL, Dan Mihai CONSTANTINESCU, Evaluation of the mechanical behavior of 3D printed cellular metamaterials with special geometries

61

Dominiq JAKAB, Ioan MARGINEAN, Dan DUBINA, Robustness capacity of multistorey steel structures in case of fire after earthquake events

71

INFORMATION SCIENCE

Tiantian LU, Yingsheng FAN, Yishi HAN, Huiyun CHEN, Guojun LI, Consensus tracking iterative learning control of second-order multi-agent systems

79

Qingchun ZHENG, Qipei LIU, Peihao ZHU, Hao SHI, Xiaoyang LI, Weld line structured light stripe center extraction approach based on data dimensionality reduction

93

Proc. Ro. Acad., Series A, Volume 24, No. 1, pp. 1–102, Bucharest, 2023

ISSN: 1454-9069 (both print and electronic)