The principal objective of this research is to reduce the elapsed time of largescale nonlinear dynamic structural finite element analysis using parallel computing techniques. The major tasks and contributions of this research are: (a) employing the general sparse matrix technique to reduce the computing time and storage requirements for both sequential and parallel substructure analysis (b) emp...

Multiple-image quasar lenses can be used to constrain the substructure mass fraction in galaxy-sized dark matter halos via anomalous flux ratios of lensed images. The flux ratios, however, can be affected by both the substructure in the lens halo and by isolated small-mass halos along the entire line-ofsight to the lensed source. While lensing by dark matter clumps near the lens galaxy is more ...

Flux ratio ‘anomalies’ in quadruply-imaged gravitational lenses can be explained with galactic substructure of the sort predicted by ΛCDM, but the strength and uniqueness of that hypothesis needs to be further assessed. A good way to do that is to use the physical scale associated with the size of the source quasar, and its dependence on wavelength. We develop a toy model to study finite source...

The following propositions are true: (1) Let S, T be non empty relational structures and f be a map from S into T. Suppose f is one-to-one and onto. Then f · f −1 = id T and f −1 · f = id S and f −1 is one-to-one and onto. (2) Let X, Y be non empty sets, Z be a non empty relational structure, S be a non empty relational substructure of Z [: X,Y :] , T be a non empty relational substructure of (...

ABSTRACT A Bayesian statistical formalism is developed to quantify the level at which the mass-function parameters of (CDM) substructure in strong gravitational-lens galaxies can be recovered, as function of the lens-survey parameters and the detection threshold of the substructures mass. Results from multiple lenses are combined in order to constrain the substructure mass fraction ( f ) and th...

The transmission simulator method of experimental dynamic substructuring captures the interface forces and motions through a fixture called a transmission simulator. The transmission simulator method avoids the need to measure connection point rotations and enriches the modal basis of the substructure model. The free modes of the experimental substructure mounted to the transmission simulator a...

This clinical report explains a convenient, efficient, yet effective alternative for management of fractured substructure cast bars for implant-retained overdentures. The technique allows the fracture to be repaired at low cost and short time without remaking the substructure and the denture and further allowing the patient to keep their denture. The report sketches the clinical and laboratory ...

MOTIVATION Identifying the location of binding sites on proteins is of fundamental importance for a wide range of applications, including molecular docking, de novo drug design, structure identification and comparison of functional sites. Here we present Erebus, a web server that searches the entire Protein Data Bank for a given substructure defined by a set of atoms of interest, such as the bi...

This paper describes a method for discovering substructures in data using a fuzzy graph match. A previous implementation of the Subdue system discovers substructures based on the psychologically-motivated criteria of cognitive savings, compactness, connec-tivity and coverage. However, the instances in the data must exactly match the discovered substructures. We describe a new implementation of ...

(1) Chloroplast lamellae, like many other membranes, are composed of 90-A subunits. (2) The way in which the 90-A units associate with one another determines the quantasome structures of the membrane. There appear to be four 90-A subunits per quantasome in the most highly organized arrays. In at least some cases, the way in which the subunits bind one to another is under environmental control. ...