In case that corrections are made, an errata will be provided in the following webpage: https://www.rri.kyoto-u.ac.jp/PUB/report/PR/ProgRep2018/ProgRep2018.htmlCO3-1 Local Two-phase Flow Characteristics for 6x6 Rod Bundle Geometry /X. Shen et al.(30016) [137]CO3-2 Basic Research for Sophistication of High-Power Reactor Noise Analysis /H. Hohara et al.(30034) [138]CO3-3 Development of In-Reactor Observation System Using Cherenkov Light (VIII) /T. Takeuchi et al.(30091) [139]CO3-4 Measurements of βeff/Λ in Accelerator-Driven System with 14 MeV Neutrons /C. H. Pyeon et al.(CA3001) [140]CO3-5 Transient Analyses of Kinectics on Accelerator-Driven System with 14 MeV Neutrons /C. H. Pyeon and M. Yamanaka(CA3002) [141]CO3-6 Data Assimilation Using ...