Look Ahead Rig Source Vertical Seismic Profile (VSP) Applications - Case Studies

An Efficient Algorithm for General 3D-Seismic Body Waves (SSP and VSP Applications)

Abstract The ray series method may be generalized using a ray centered coordinate system for general 3D-heterogeneous media. This method is useful for Amplitude Versus Offset (AVO) seismic modeling, seismic analysis, interpretational purposes, and comparison with seismic field observations.For each central ray (constant ray parameter), the kinematic (the eikonal) and dynamic ray tracing system ...

A look back, a look ahead.

The experts look ahead

The future of integrated electronics is the future of electronics itself. The advantages of integration will bring about a proliferation of electronics, pushing this science into many new areas. Integrated circuits will lead to such wonders as home computers—or at least terminals connected to a central computer—automatic controls for automobiles, and personal portable communications equipment. ...

Adaptive Look-Ahead Planning

We present a new adaptive connectionist planning method. By interaction with an environment a world model is progressively constructed using the backpropagation learning algorithm. The planner constructs a look-ahead plan by iteratively using this model to predict future reinforcements. Future reinforcement is maximized to derive suboptimal plans, thus determining good actions directly from the...

A look back and a look ahead.

The author reviews a series of predictions made more than two decades ago regarding nursing and nursing administration. These concerned the work of nursing, the workers involved in nursing, the environment surrounding practice, and the nurse's role. While many of the forecasts were right on target, others fell short of the mark; both are discussed in light of the challenges facing nurse adminis...