Physical Fields

A Qualitative Model of Physical Fields

A qualitative model of the spatio-temporal behaviour of distributed parameter systems based on physical fields is presented . Field-based models differ from the object-based models normally used in qualitative physics by treating parameters as continuous entities instead of as attributes of discrete objects . This is especially suitable for natural physical systems, e.g . in ecology . The model...

Cluster Identification and Characterization of Physical Fields

The description of complex configuration is a difficult issue. We present a powerful technique for cluster identification and characterization. The scheme is designed to treat with and analyze the experimental and/or simulation data from various methods. Main steps are as follows. We first divide the space using face or volume elements from discrete points. Then, combine the elements with the s...

Physical Review D Particles and Fields

Physical models of tissue in shear fields.

This review considers three general classes of physical as opposed to phenomenological models of the shear elasticity of tissues. The first is simple viscoelasticity. This model has a special role in elastography because it is the language in which experimental and clinical data are communicated. The second class of models involves acoustic relaxation, in which the medium contains inner time-de...

Modeling Physical Fields for Interrogative Visualization

Interrogative visualization refers to the process of interactive computer graphics display and accurate quantitative querying of physical data. Quantitative querying includes search for metric, combinato-rial and topological information. To support this paradigm, we build uniform, compact, co-registered representations (spline models) of multiple physical data elds over the same domain. Dense, ...