Management has many aspects with many challenges. The goals remain but the solutions are improved. This is the fourth volume of the book that shows the diversity of topics and the interest of the authors. This volume focuses on recent PhD research results in various topics. The authors are: Lajos Bánhegyesi (University of Miskolc), László Berényi (University of Miskolc), Péter Bóna (PhD at University of Pannonia), Mihály Csótó (Óbuda University), Judit Kárpáti-Daróczi (Óbuda University), Gábor Réthi (University of Miskolc), Gábor Süveges (Univesity of Miskolc), Balázs Szentes (University of Pannonia).