The DOA (direction of arrival) estimation of seismic signals from the moving target on the ground bears great significance for unattended ground systems. The traditional DOA estimation of seismic signals is achieved by a sensor array and its corresponding algorithms. MEMS (Micro-ElectroMechanical Systems) vector vibration sensor, however, gets the vector information over the propagation of seis...

The Beam Delivery System (BDS) of the proposed TESLA linear collider contains some of the tightest magnet alignment tolerances of the entire machine. In [1], luminosity stability issues were covered in some detail, with specific emphasis on ground motion and magnet vibration. It was shown that ground motion effects and fast magnet vibration leads to relatively high values of both linear and sec...

The paper presents the problem of using neural network for military vehicle classification on the basis of ground vibration. One of the main element of the system is a unit called geophone. This unit allows to measure amplitude of ground vibration in each direction for certain period of time. The value of amplitude is used to fix the characteristic frequencies of each vehicle. If we want to fix...

A new structural control system using damper-installed shear walls in lower stories with reduced stiffness is proposed for vibration control of high-rise RC buildings. That system has some design variables, i.e., height of shear wall, degree of stiffness reduction at lower stories, and quantity of dampers. In this paper, some parametric studies on the shearbeammodel with a stiff beam against tw...

A RCCSD(T)/cc-pVQZ potential energy surface is constructed for the HOCO radical in the ground electronic state and used to compute rotation-vibration levels of HOCO and DOCO. Two numerical strategies are employed to study in detail the wave function properties. The importance of stretch-bend coupling, such as ν4/ν5 and ν3/ν4, for the internal dynamics is demonstrated. The rotational constants c...

An ab initio approach is developed to determine the photon-electron and electron-vibration coupling rates, for ion-doped materials related to laser cooling of solids. The ground and excited state energies are determined, and the corresponding geometries optimized. Using the first-principle wavefunctions, the electric transition dipole moment co necting the ground and excited states is calculate...