Mathematics, Physics, Technical Sciences, Information Science

Volume 22, Number 4

October - December 2021




1. Muhammed ÇINAR, Emrah YILMAZ, Mikail ET, Deferred statistical convergence on time scales 301
2. Cecil P. GRÜNFELD, On a nonlinear evolution model in an ordered Banach space with norm additive on the positive cone 309
3. Valentin IONESCU, A proof of the central limit theorem for c-free quantum random variables 319
4. Mircea MERCA, Overpartitions as sums over partitions 327


5. Wenyu LV, Kai GUO, Yi TAN, Xufeng DU, Ming LIU,Wenjie CAO, Main roof mechanical model and numerical simulation of composited backfilling longwall face in steeply dipping coal seam 335
6. Sheng XUE, Xin GUO, Chunshan ZHENG, Yaobin LI, Linfang XIE, Macroscopic mechanical properties and mechanism of superfine Portland cement-based composite sealing material for gas drainage 345
7. Mustafa ÖZDEMİR, Hypersingularities of 3-RRR planar parallel robots 355
8. İbrahim KARAMAN, Davut Erdem ŞAHİN, Experimental study and simulation on displacement of soft dielectric elastomer actuators 363


9. Muhammad Rizwan Rashid RANA, Saif Ur REHMAN, Asif NAWAZ, Tariq ALI, Munir AHMED, A conceptual model for decision support systems using aspect based sentiment analysis 373
10. Teodor-Constantin NICHITELEA, Maria-Geanina UNGURITU, Traffic congestion reduction at traffic light intersections for time-synchronized autonomous vehicles 383



Proc. Ro. Acad., Series A, Volume 22, No. 4, pp. 299–390, Bucharest, 2021



copyright © Academia Română 2006

copyright © Academia Română 2006