B-scan ultrasound demonstrated dense, low-moderate amplitude mobile clumps in the anterior vitreous and more prominent dot echoes in the mid to posterior vitreous, as well as mobile mid-amplitude echoes in the nasal wall, suspicious for exudative retinal detachment (Fig. 5).
We show that the global low- to mid-latitude disturbance amplitude is correctly described by the JB2008 model for low solar activity conditions and by both the JB2008 and the NRLMSISE-00 models for high solar activity conditions.
A statistical study of SIs by Shinbori et al. (2009) showed that at low-to-mid latitudes, the amplitude attains a minimum at around 08 00 MLT, then increases towards noon, peaks in the afternoon hours, and once again peaks at midnight.
The proposed neuro-PI controller is trained using back-propagation neural network in such a way that its PI gains are correlated to the generated data set of moving speeds, mid-span acceleration amplitude of the guideway, and maximum vertical accelerations of maglev oscillators.
It can be noticed that in the mid latitude range, the amplitude in the dusk to pre-midnight sector is higher than in the dawn to noon sector, which supports the observations presented in the previous section.
There is an annual variation of the semidiurnal amplitude at mid-latitudes peaking in summer.
The stratospheric QBO (SQBO), a distinctive feature of the zonal wind, maximizes its amplitude near mid-stratosphere, and the mesospheric QBO (MQBO) reaches its maximum in the mesopause region (Burrage et al. 1996; Baldwin et al. 2001).
In order to clarify the contribution of solar wind energy to the long-term variation in the Sq amplitude at mid-latitudes, it would be valuable to compare the residual Sq amplitude with the interplanetary parameters (solar wind density, velocity, and IMF) in future studies.
Selecting nighttime data generates a downward (upward), almost constant bias of about 2 nT for the 6 (12) months signal amplitude at mid-latitudes, and a positive phase delay of about 15 days for the annual signal, when the phase of the semiannual signal is not much affected.
At mid-latitudes the amplitudes of the diurnal and semidiurnal temperature tide are in the order of 5 K during summer.
A practical design methodology, based on the minimisation of the displacement amplitude at the mid-span of the cable subjected to support excitation, is proposed.
