The feedback vertex set problem (FVSP), a combinatorial optimization problem, finds a set of vertices that intersect all cycles of the directed graph.One of the cutting-edge heuristics for this problem is a simulated annealing (SA)-based algorithm named the SA-FVSP.In this paper, we propose ealisboa.com an improved variant of the SA-FVSP by applyin
We demonstrated a compact, widely tunable, and monochromatic high-repetition-rate terahertz (THz) source based on difference frequency generation in a GaSe crystal.The dual-wavelength pump laser was a doubly resonant near-degenerate type-II periodically poled LiNbO3 (PPLN) gruvi golden lager optical parametric oscillator (OPO), intracavity pumped b
Adel Denewer,1 Fayez Shahatto,1 Waleed Elnahas,1 Omar Farouk,1 Sameh Roshdy,1 Ashraf Khater,1 Osama Hussein,1 Saleh Teima,2 Mohammed Hafez,1 Samir Zidan,1 Nazem Shams,1 Sherif Kotb11Surgical Oncology Department, Oncology Center, 2Clinical Oncology and Nuclear Medicine Department, Mansoura University, Mansoura, EgyptBackground: Surgical management o