Functional testing of SFF parts represents an exciting area of research in solid freeform fabrication. One approach to functional testing is to use similitude techniques to correlate the behavior of an SFF model and a product. Previous research at UT Austin has resulted in development of an empirical similitude technique to correlate the behavior of parts of dissimilar materials and geometry. A...

We provide a theory of random intertemporal choice. Choice is random due to unobserved heterogeneity in discounting from the perspective of a modeler. First, we show that the modeler can identify the distribution of discount rates uniquely from random choice. We then provide axiomatic characterizations of random discounting utility models, including exponential and quasi-hyperbolic discounting ...

Traditionally, diagrams used in software systems modelling have been two dimensional (2D). This is probably because graphical notations, such as those used in object-oriented and structured systems modelling, draw upon the topological graph metaphor, which, at its basic form, receives little benefit from three dimensional (3D) rendering. This paper presents a series of 3D graphical notations de...

Visualizing complex beamline designs, animating installation procedures and virtually walking through planned facilities 3D modelling is a powerful tool with a broad range of applications in accelerator development. The poster gives examples for established and emerging 3D modelling applications at the European XFEL and their benefits: 3D visualization enables inspection and compliance analysis...

The paper gives a detailed report on investigations of dinosaur skeletons being conducted to collect data on dinosaurs’ life history. A large quantity of physiological data can be derived if the properties of living animals are inferred, e.g. body volume (body mass) and body surface area, using the methods of comparative physiology. These values can be determined through the use of some modelli...

Technologies of Rapid Prototyping (RP) represents the rapid production of 3D physical parts using by additive manufacturing technology. The start these techniques became available in the late 1980s and were used to produce 3D models and prototype parts. Today they are used for a much wider range of applications and are even used to manufacture production-quality parts in relatively small number...

The visual recognition methods of texture feature of welding seam have the important significances to realize the automatic tracking of welding seam in the steps of subsequent welding and cover welding of multi-layer welding. Starting from the point of view of making full use of texture feature of welding seam image, the method research and algorithm design are respectively carried out on the 2...

In this paper we present two new algorithms to study the extended nature of the crossing seam between electronic potential energy surfaces. The first algorithm is designed to optimize conical intersection geometries:  both minima and saddle points. In addition, this method will optimize conical intersection geometries using arbitrary geometrical constraints. We demonstrate its potential on diff...

The excited state potential energy surface of 5-bromouracil has been studied with ab initio CASPT2//CASSCF calculations to rationalize the competition between the benign decay and the photolysis found experimentally. The surface is characterized by an extended region of degeneracy between S(1) and S(0). The access to this region has been studied with minimum energy path calculations from the FC...