Shota Yamanaka

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We propose Vibkinesis, a smartphone that can control its angle and directions of movement and rotation. By separately controlling the vibration motors attached to it, the smartphone can move on a table in the direction it chooses. Vibkinesis can inform a user of a message received when the user is away from the smartphone by changing its orientation, e.g.,(More)
The performance of trajectory-based tasks is modeled by the steering law, which predicts the required time from the index of difficulty (ID). This paper focuses on the fact that the time required to pass through a straight path with linearly-varying width alters depending on the direction of the movement. In this study, an expression for the relationship(More)
When we perform a task that involves opening a number of windows, we cannot access the objects behind them. Thus, we are forced to switch the foreground window frequently or to move it temporarily. In this paper, we propose a Switchback Cursor technique where the cursor can move underneath windows when the user presses both the left and right mouse buttons.(More)
Minimally invasive cardiac surgeries for aortic valve replacement (AVR) are still a technical challenge for surgeons because these procedures are undertaken through small incisions and deep surgical fields. Although AVR via vertical infraaxillary thoracotomy can be a cosmetically superior option, a disadvantage of this approach is the distance between the(More)
The centrosomal protein, CDK5RAP2, is a microcephaly protein that regulates centrosomal maturation by recruitment of a γ-tubulin ring complex (γ-TuRC) onto centrosomes. In this report, we identified a novel human centrosomal protein, Cep169, as a binding partner of CDK5RAP2, a member of microtubule plus-end-tracking proteins (+TIPs). Cep169 interacts(More)
Steering time differs between narrowing and widening linear tunnels; a narrowing tunnel requires more time to navigate than a widening one. A prediction model, IDGap, for the time difference has recently been proposed, and it shows an excellent fit. However, the time difference in movement and model fitness were confirmed on a limited scale. The experiment(More)
The Nudging Technique is a new manipulation paradigm for GUIs. With traditional techniques, the user sometimes has to perform a fine-grained operation (e.g., pointing at the edge of a window to resize). When the user makes a mistake in the pointing, problems may arise such as an accidental switching of the foreground window. The nudging technique relieves(More)
The steering law models human motor performance and has been verified to hold for a single linear and/or circular path. Some extensions investigated steering around corners. Yet, little is known about human performance in navigating joined linear paths, i.e., successions of path segments with different widths. Such operations appear in graphical user(More)
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