Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university.
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
The synthetic unit hydrograph method is a popular method for analyzing watershed flood discharge for rivers that do not have observational flood hydrographs. To create flood hydrographs for rivers with no or very few observed flood hydrographs, it is necessary to require data on characteristics or parameters of watershed areas (DAS). The Time to peak Model in this study will consider several parameters including the area of the watershed (A), the length of the main river (L), the length of the river from the center of the watershed to the outlet (Lc), river slope (S), watershed roughness (n), factor the shape of the watershed (Fb), as well as the fractal characteristics of the watershed in the form of river branching ratio (RB) and river length ratio (RL). To get the accuracy of the time to peak model and to get a flood hydrograph that can represent the prototype, it is necessary to do some statistical analysis. The time to peak model predicted using linear regression analysis produced the time to peak equation (Tp) as a function of watershed area (A) and river length from the center of the watershed to outlet (Lc). This equation has a good level of accuracy with a correlation coefficient of 0.893; The coefficient of determination is around 0.797 and Adjusted R2 is around 0.746. The model has also met the requirements of the classical assumptions including linearity test, residual normal test, heteroscedasticity test, autocorrelation test (indicated by the Durbin Watson value of 1.895 with the interpretation of no autocorrelation) and multicollinearity test. Model validation has NSE value of 0.731 (good), RMSE value of 0.482 and MAE value of 0.390 (both RMSE and MAE values are close to zero). Model verification has NSE value of 0.758 (very good), RMSE value of 0.394 and an MAE value of 0.320 (both RMSE and MAE values are close to zero).
Magneto telluric, Gravity, and Passive Seismic Tomography (PST) surveys were conducted over the southwestern part of Central Java, Indonesia. The thick volcanic sediments conceal the prospective sedimentary basin in the area, which has been researched for more than five decades without any significant results. New evidence of the tecto-volcano system in the study area was found based on the methods. The study reveals two major geological structures in the area. The northeast-southwest lineaments, which correspond to the Meratus Thrust-Folds were strike-slip faulted by the Pamanukan-Cilacap Fault Zone (PCFZ) in the northwest-southeast directions. The Meratus Thrust-Folds existence proved that the study area is related to the Paleogene Fore-Arc Basin. However, the Meratus Thrust-Folds has been vanished partially due to the volcanism activities. Superimposed calderas of the ancient-volcanoes system were distinct in the area. The circular patterns which are interpreted as the part of ring-fault are found based on the Gravity dataset as well as the geomorphology and geological formation. The old magmatic chamber and the volcano conduit system within the calderas have been modeled based on the Magneto telluric dataset and confirmed with the PST interpretations. The interpretation is constrained by the existing exploration well. Two eruption points delineated following the high-resistive zones of the Magneto telluric dataset, while another eruption points are estimated based on circular patterns. All of the eruption points are located at around PCFZ as the weak zone, where the plume passes through and rising the volcanoes.
