A striking feature of visual verticality estimates in the dark is undercompensation for lateral body tilt. Earlier studies and models suggest that this so-called Aubert (A) effect increases gradually to around 130 degrees tilt and then decays smoothly on approaching the inverted position. By contrast, we recently found an abrupt transition toward errors of opposite sign (E effect) when body til...

Recent progress in realistic simulations of solar convection have given us an unprecedented opportunity to evaluate the robustness of solar interior structures and dynamics obtained by methods of local helioseismology. We present results of testing the time-distance method using realistic simulations. By computing acoustic wave propagation time and distance relations for different depths of the...

The molecular layer of the dentate gyrus appears as the main entrance gate for information into the hippocampus, i.e., where the perforant path axons from the entorhinal cortex synapse onto the spines and dendrites of granule cells. A few dispersed neuronal somata appear intermingled in between and probably control the flow of information in this area. In rabbits, the number of neurons in the m...

A Furuta pendulum is a serial connection of two thin, rigid links, where the first link is actuated by a vertical control torque while it is constrained to rotate in a horizontal plane; the second link is not actuated. The second link of the conventional Furuta pendulum is constrained to rotate in a vertical plane orthogonal to the first link, under the influence of gravity. Methods of geometri...

In biped locomotion, the energy minimization problem is a challenging topic. This problem cannot be solved analytically since modeling the whole robot dynamics is intractable. Using the inverted pendulum model, researchers have defined the Zero Moment Point (ZMP) target trajectory and derived the corresponding Center of Mass (CoM) motion trajectory, which enables a robot to walk stably. A chang...

We have carried out numerical simulations of three-dimensional nonisothermal flow around an in situ heat-based flow sensor to investigate how formation heterogeneities can affect the interpretation of ground water flow velocities from this instrument. The flow sensor operates by constant heating of a 0.75-m-long, 5-cm-diameter cylindrical probe, which contains 30 thermistors in contact with the...

Differing recommendations regarding the optimum delivery techniques for term singleton transverse-lying fetuses at elective caesarean section led to this study to document the University of Calabar Teaching Hospital’s experience for the first time. This cross-sectional retrospective study aimed to establish the intra-operative delivery techniques applied and the immediate outcome. Techniques at...

BACKGROUND Although there is an abundance of data in the literature regarding the safety of breast reduction and augmentation, nearly all of the literature concerning mastopexy describes techniques. There are few studies regarding revision and complication rates for mastopexy procedures. METHODS A retrospective review was performed on a series of 150 consecutive patients who underwent a masto...

According to construction scheme of some weak surrounding rock large span double and multi-arch tunnel works, finite element value simulation method is adopted to research weak surrounding rock deformation characteristic, anchor bolt mechanics characteristic, preliminary support and secondary lining structure mechanical characteristics, etc, and the research result shows that: repeatedly distur...

We study the crustal structure of southern California by inverting horizontal-to-vertical (H/V) amplitudes of Rayleigh waves observed in noise cross-correlation signals. This study constitutes a useful addition to traditional phase-velocity-based tomographic inversions due to the localized sensitivity of H/V measurements to the near surface of the measurement station site. The continuous data o...