Tootfinder

Impact of the Russia-Ukraine conflict on the international staple agrifood trade networks
Yin-Ting Zhang, Mu-Yao Li, Wei-Xing Zhou
https://arxiv.org/abs/2403.12496

Impact of the Russia-Ukraine conflict on the international staple agrifood trade networks
The Russia-Ukraine conflict is a growing concern worldwide and poses serious threats to regional and global food security. Using monthly trade data for maize, rice, and wheat from 2016/1 to 2022/12, this paper constructs three international crop trade networks (iCTNs) and an aggregate international food trade network (iFTN). We aim to examine the structural changes following the occurrence of the Russia-Ukraine conflict. We find significant shifts in the number of edges, average degree, density…

Yeah. Diesel drivers feeling aggrieved about motoring representatives pointing out that new RUCs disproportionately affect EV drivers based on impact (on roads & environment in general). Yes, both sorts of vehicles have mining & manufacturing cost (about equal) but diesel & petrol drivers forget the evidence shows the fuel supply line they depend on - getting it to them & them burning it in situ - exacts a far greater cost on the world than EVs, per kilometer.

Factors Affecting Terahertz Emission from InGaN Quantum Wells under Ultrafast Excitation
Muhammad Farooq Saleem, Ghulam Abbas Ashraf, Muhammad Faisal Iqbal, Rashid Khan, Muhammad Javid, Tianwu Wang
https://arxiv.org/abs/2404.02398

Factors Affecting Terahertz Emission from InGaN Quantum Wells under Ultrafast Excitation
InGaN quantum wells (QWs) grown on c-plane sapphire substrate experience strain due to the lattice mismatch. The strain generates a strong piezoelectric field in QWs that contributes to THz emission under ultrafast excitation. Physical parameters such as QW width, period number, and Indium concentration can affect the strength of the piezoelectric field and result in THz emission. Experimental parameters such as pump fluence, laser energy, excitation power, pump polarization angle, and incident…