University of Texas at Arlington

About: University of Texas at Arlington is a education organization based out in Arlington, Texas, United States. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 11758 authors who have published 28598 publications receiving 801626 citations. The organization is also known as: UT Arlington & University of Texas-Arlington.

Substructure discovery using minimum description length and background knowledge

Abstract: The ability to identify interesting and repetitive substructures is an essential component to discovering knowledge in structural data. We describe a new version of our SUBDUE substructure discovery system based on the minimum description length principle. The SUBDUE system discovers substructures that compress the original data and represent structural concepts in the data. By replacing previously-discovered substructures in the data, multiple passes of SUBDUE produce a hierarchical description of the structural regularities in the data. SUBDUE uses a computationally-bounded inexact graph match that identifies similar, but not identical, instances of a substructure and finds an approximate measure of closeness of two substructures when under computational constraints. In addition to the minimumdescription length principle, other background knowledge can be used by SUBDUE to guide the search towards more appropriate substructures. Experiments in a variety of domains demonstrate SUBDUE's ability to find substructures capable of compressing the original data and to discover structural concepts important to the domain.

Stability and level of self-esteem as predictors of anger arousal and hostility.

Abstract: We examined stability of self-esteem and level of self-esteem as predictors of dispositional tendencies to experience anger and hostility. We reasoned that individuals with unstable high self-esteem would report especially high tendencies to experience anger and hostility, and that individuals with stable high self-esteem would report particularly low tendencies. We expected individuals with stable and unstable low self-esteem to fall between these two extremes. These predictions were derived from an analysis of anger and hostility that emphasized the instigating role of threats to self-esteem. Stability of self-esteem was assessed through multiple assessments of global self-esteem in naturalistic settings. Results revealed the predicted pattern for the tendency to experience anger and a "motor" component of hostility. The importance of considering both stability and level of self-esteem in analyses of anger and hostility is discussed.

On Residual Stresses in Arteries

Abstract: In the study of vascular elasticity the unloaded state (one with zero transmural pressure and zero axial load) is commonly used as the reference state in which stresses and strains are considered as zero everywhere. Strains at loaded states are defined with respect to this state. Stress-strain relationships are identified under the assumption that the vessel wall is stress-free at this unloaded state. Evidence of the existence of residual stresses in the arterial wall at the unloaded state is given in Fung [4]. With a longitudinal cut along the vessel wall the unloaded specimen springs open and its cross section becomes a sector. The opening angle of the vessel wall is time-dependent after the sudden relief of the initial residual stress. It shows that the artery is not stress-free at the unloaded state. It is important to identify the stress-free state. When we use pseudoelasticity [3] to characterize the arterial wall, we need a stress-free state as the reference state for strain measurements. Correspondingly, we also want to define stress with respect to this same reference state so that we can relate stresses to strains easily. Presence of the residual stress at the unloaded tube state will certainly affect the evaluation of stress distribution in the arterial wall due to actual loadings in the physiological range. In this note we present a method to describe the geometry of the opened-up stress-free state of the artery, which is taken to be the reference state. An algorithm is outlined for the identification of the stress-strain relationship of the arterial wall. Residual stresses, and strains in the unloaded tube are evaluated. With the consideration of residual stresses the stress distributions due to loadings in the physiological range are also evaluated.

Methodological issues in cross‐cultural marketing research: A state‐of‐the‐art review

Abstract: Notes that methodological problems are hampering the growth of cross‐cultural marketing research and presents a review of methodological issues to address these problems. Organizes these issues around a six‐step framework which includes elements such as problem definition, the development of an approach and research design formulation. Notes that the marketing research problem can be defined by comparing the phenomenon or behaviour in separate cultural contexts and eliminating the influence of the self‐reference criterion. Discusses issues in data analysis such as treatment of outliers and standardization of data. Concludes with an interpretation of results and report presentation.