無載荷オープンケーソンと周辺砂利層の摩擦抵抗に関する研究(II)

The SS caisson (SPACE SYSTEM CAISSON) method fills the space (gap) between caisson circumference surface and rock with the space gravel and it is the open caisson method which gently installs the caisson only by the dead weight at the good accuracy by reducing skin friction resistance which depends on caisson circumference surface, while the stability of country rock is attempted. 　The result of numerical value using DEM and model experiment of SS caisson model with exhaust slot was mainly compared in the previous report. In this report, SS caisson model with exhaust slot and SS caisson model without exhaust slot were analyzed numerically using analysis method equal to the previous report. In this report, the result of comparing experimental value with numerical value is reported.textapplication/pdfdepartmental bulletin pape

Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e^＋e^－ annihilation at √s = 10.58 GeV

The Collins effect connects transverse quark spin with a measurable azimuthal asymmetry in the yield of hadronic fragments around the quark’s momentum vector. Using two different reconstruction methods we measure statistically significant azimuthal asymmetries for charged pion pairs in e^+e^- annihilation at center-of-mass energies of 10.52 GeV and 10.58 GeV, which can be attributed to the fragmentation of primordial quarks with transverse spin components. The measurement was performed using a data set of 547 fb^{-1} collected by the Belle detector at KEKB improving the statistics of the previously published results by nearly a factor of 20.journal articl

Observation of B+→ΛΛ̅K+

journal articl

Design and implementation of a multi-DOF hand and basic motions for rope-knotting tasks

For complex tasks such as tying a knot, simply creating a robot hand with many degrees of freedom is insufficient. It is also important to extract the requirements of the task, design the hand based on these requirements, and implement functions to use the hand effectively. Thus, in this study, we have designed a robot hand with three fingers each having three degrees of freedom and developed basic functions to realize rope-knotting tasks. In experiments, the designed robot hand and functions were applied to performing various manipulations during rope-knotting tasks, and the redundancy provided by the structure could be utilized to generate motions.journal articl