University of Memphis

About: University of Memphis is a education organization based out in Memphis, Tennessee, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 7710 authors who have published 20082 publications receiving 611618 citations. The organization is also known as: U of M.

Structural features in a brittle–ductile wax model of continental extension

Abstract: Structural features produced during the rifting of continents depend on the layered rheological properties of the crust and lithosphere and, in particular, on the presence of any transitions between brittle and ductile behaviour1. Here we use a wax model to explore the gross structural response of continental lithosphere under pure shear extension in the presence of a continuous brittle–ductile transition. The wax models were deformed under various boundary conditions to reflect a variety of different regions, most notably the Basin and Range province of North America. Our experiments show the development of listric normal faults, structures common to regions of continental extension. We also observe the formation of distributed and discrete rifting, and intrusion and occlusion of the upper brittle layer by the ductile lower layer. The factor controlling deformation style in each case appears to be the relative thickness of the brittle and ductile layers, although a relatively high rate of strain generally promotes discrete rifting.

Predicting lexical proficiency in language learner texts using computational indices

Abstract: The authors present a model of lexical proficiency based on lexical indices related to vocabulary size, depth of lexical knowledge, and accessibility to core lexical items. The lexical indices used...

Internal and External Logistics Information Technology Integration

Abstract: While it is widely believed that information technology is a major differentiator of logistics performance, there has been limited research that empirically tests or characterizes this relationship. The current research investigates the relationship between logistics information technology (LIT) and logistics service performance. The objective of this research is to develop a framework for managers to understand logistics information technology applications and to justify LIT expenditures. The results offer direction for characterizing logistics information technology. The research describes how internal logistics information integration and customer integration can influence customer service performance. These results begin to dimensionalize logistics information technology and the impact it has on strategy and performance.

Question asking and eye tracking during cognitive disequilibrium: comprehending illustrated texts on devices when the devices break down.

Abstract: The PREG model of question asking assumes that questions emerge when there is cognitive disequilibrium, as in the case of contradictions, obstacles, and anomalies. Participants read illustrated texts about everyday devices (e.g., a cylinder lock) and then were placed in cognitive disequilibrium through a breakdown scenario (e.g.,the key turns but the bolt does not move). The participants asked questions when given the breakdown scenario, and an eyetracker recorded their fixations. As was predicted, deep comprehenders asked better questions and fixated on device components that explained the malfunction. The eye fixations were examined before, during, and after the participants’ questions in order to trace the occurrence and timing of convergence on faults, causal reasoning, and other cognitive processes.