On a jack-up structure acts static loads (own weight, machines, installations and materials weight) and dynamic loads (waves, wind, marine currents, earthquake, operating installations). The authors led their analysis on the determining the dynamic loads produced by waves, wind and marine currents, in the Black Sea, because these are the main source in collapse of the structure. The structural ...

Our immediate objectives are to develop a technique to measure vertical water velocity and the turbulent fluxes of heat and salt with Autonomous Underwater Vehicles (AUV), and to construct a vehicle to fully test and exploit the technique. This has been done in a limited way with our Autonomous Conductivity and Temperature Vehicle (ACTV). Morison and McPhee (1998) use the vertical motion of the...

In the past, stability of an undamped clamped-pinned pipe conveying fluid has been always considered numerically leading to controversial results. Païdoussis (2004) has shown that a numerical stability analysis of a clamped-pinned pipe requires exceptionally large number of vibration modes to obtain the correct dynamical behaviour. In this paper, analytical proof of stability of a clamped-pinne...

The association of changes in the character of the pulse and serious cardiac symptoms was recognized many centuries ago, and carefully studied with all the means available at the time. But the significance of the arrhythmias has only been elucidated within the last few years, by the use of instrumental methods of analysis. In G. A. Gibson's text-book (1898), designed to be a mirror of the state...

Two typical gravity-based fish cages with circular and square shapes are modeled in the present study to compare their cage deformations, cultivation volumes drag forces under different pure current conditions. hydrodynamic models, i.e., Morison model Screen model, implemented into a general finite element (FE) solver Code_Aster as new module employed dynamic analyses of cages. Different dimens...

During the course of experiments designed to determine the cortical representation of localized thalamic regions, it was observed that stimulation at a frequency of 5 to 15 per second was followed by a recruiting cortical response when the stimulating electrodes were placed in the region of the midline nuclei (Morison and Dempsey, 1942). Moreover, single stimuli delivered to this area frequentl...

In another paper two types of cortical activity elicited by stimulation of the sensory path have been described. Evidence was presented that these phenomena, the so-called augmented and repetitive sensory responses, share a single neuronal mechanism, but may, on the other hand, be segregated both from the simple “primary” sensory response and the generalized 8 to 12 per second “spontaneous” bur...