measuring field gravity in sea due to the accelerations introduced via waves and movements to the gravity measuring systems has a low accuracy since according to einstein's equalent principle, gravimeter isn't able to separate the gravity acceleration from another acceleration. ship borne gravimetery observations by means of like oscillations and accelerations of the ship motion, and ...

The paper deals with the reliability–based design optimization (RBDO) of concrete gravity dams subjected to earthquake load using subset simulation. The optimization problem is formulated such that the optimal shape of concrete gravity dam described by a number of variables is found by minimizing the total cost of concrete gravity dam for the given target reliability. In order to achieve this p...

In recent years, two-wheeled inverted pendulum vehicles realizing high mobility have been developed. In such vehicles, an inverted pendulum control system maintains the vehicle’s stability by only using the two driving parallel wheels. Therefore, the gravity center of the vehicle body with a passenger is higher than the wheel axis, and the vehicle is moved by leaning the vehicle body forward or...

In this work, we present the gravitational field generated by a cosmic string carrying a timelike current in the scalar-tensor gravities. The mechanism of formation and evolution of wakes is fully investigated in this framework. We show explicitly that the inclusion of electromagnetic properties for the string induces logarithmic divergences in the accretion problem.

Using the elegant method employed recently by Erickcek, Smith and Kamionkowski [1], on the premise that the space-time of Solar System is described by a metric with constant-curvature background added by a static perturbation, we show that many f(R) gravities are ruled out by Solar System tests.

the existence of an organization depends on communications and this is an area that managers spend most of their time on. therefore, recognition of communication skills accompanied with its implementation is among the essential parameters of successful management in any organization. in this study we decided to determine the relationship between managers' communication skills and health of orga...