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Longview, TX, United States

LeTourneau University is a private, interdenominational Christian university located in Longview, Texas, United States with flagship programs in engineering, aeronautical science, education and business. The university also provides graduate and undergraduate degree programs for working adults online and at education centers on Texas in Bedford, Dallas, Houston, Longview, and Tyler.The university's vision statement reads: Claiming every workplace in every nation as their mission field, LeTourneau University graduates are professionals of ingenuity and Christ-like character who see life's work as a holy calling with eternal impact.Founded as LeTourneau Technical Institute in February 1946 by R.G. LeTourneau with his wife Evelyn, the school initially educated veterans returning from World War II but has grown into a nationally recognized master's-granting university, ranked #27 in the Regional Universities category in "America's Best Colleges" by U.S. News and World Report. Total annual enrollment of LeTourneau University is nearly 3,000. Wikipedia.

Wei K.,Peking University | Wei K.,Northwestern University | Wert D.,LeTourneau University | Kording K.,Northwestern University
Journal of Neurophysiology | Year: 2010

We constantly make small errors during movement and use them to adapt our future movements. Movement experiments often probe this error-driven learning by perturbing movements and analyzing the after-effects. Past studies have applied perturbations of varying nature such as visual disturbances, position- or velocity-dependent forces and modified inertia properties of the limb. However, little is known about how the specific nature of a perturbation influences subsequent movements. For a single perturbation trial, the nature of a perturbation may be highly uncertain to the nervous system, given that it receives only noisy information. One hypothesis is that the nervous system can use this rough estimate to partially correct for the perturbation on the next trial. Alternatively, the nervous system could ignore uncertain information about the nature of the perturbation and resort to a nonspecific adaptation. To study how the brain estimates and responds to incomplete sensory information, we test these two hypotheses using a trial-by-trial adaptation experiment. On each trial, the nature of the perturbation was chosen from six distinct types, including a visuomotor rotation and different force fields. We observed that corrective forces aiming to oppose the perturbation in the following trial were independent of the nature of the perturbation. Our results suggest that the nervous system uses a nonspecific strategy when it has high uncertainty about the nature of perturbations during trial-by-trial learning. Copyright © 2010 The American Physiological Society.

Magut P.K.S.,Louisiana State University | Das S.,Louisiana State University | Fernand V.E.,Louisiana State University | Fernand V.E.,LeTourneau University | And 6 more authors.
Journal of the American Chemical Society | Year: 2013

Chemotherapeutic agents with low toxicity to normal tissues are a major goal in cancer research. In this regard, the therapeutic activities of cationic dyes, such as rhodamine 6G, toward cancer cells have been studied for decades with observed toxicities toward normal and cancer cells. Herein, we report rhodamine 6G-based organic salts with varying counteranions that are stable under physiological conditions, display excellent fluorescence photostability, and more importantly have tunable chemotherapeutic properties. Our in vitro studies indicate that the hydrophobic compounds of this series allow production of nanoparticles which are nontoxic to normal cells and toxic to cancer cells. Furthermore, the anions, in combination with cations such as sodium, were observed to be nontoxic to both normal and cancer cells. To the best of our knowledge, this is the first demonstration that both the cation and anion play an extremely important and cooperative role in the antitumor properties of these compounds. © 2013 American Chemical Society.

Beets M.T.,University of Texas at Tyler | Forringer E.,LeTourneau University
Journal of Pain and Symptom Management | Year: 2011

Increasing numbers of patients are receiving implantable cardioverter defibrillators (ICDs); the devices remain fully functional in most terminally ill patients at the time of death. We describe a case of a terminally ill patient with repeated defibrillations who requested urgent ICD deactivation. Nonmedical magnets available in the facility were used to deactivate the ICD and terminate the defibrillations. We then studied various magnetic field sources commonly available in homes, such as ceramic magnets, cell phones, computer hard drives, headsets, and earbuds that potentially may be used to temporarily deactivate an ICD until a device technician is available for reprogramming. We conclude that commonly available magnetic sources may potentially be used to deactivate an ICD. The clinical usefulness of this is speculative and limited to conditions when the need to turn off the device is urgent, and a delay in reprogramming is anticipated. © 2011 U.S. Cancer Pain Relief Committee Published by Elsevier Inc. All rights reserved.

Agency: NSF | Branch: Standard Grant | Program: | Phase: ENGINEERING DESIGN AND INNOVAT | Award Amount: 299.82K | Year: 2015

Engineers regularly face problems and must draw from past experiences to solve them. The more experiences a person has, the more ideas they are able to develop. Further, engineers with different experiences may develop different types of ideas. This award will develop a way to measure the experiences of a designer in order to predict his or her ability to generate creative solutions to a problem. This new understanding of the creative process will enable teachers to understand how engineers gain experience and use that experience to generate high-quality ideas, improving the ability of educators in the United States to teach creativity and innovation in the classroom. This award will also provide a way for individuals to understand their own strengths in creative thinking and ways in which they can become more innovative. Finally, this award will enable project managers to strategically create diverse teams of problem-solvers to maximize the types and quality of ideas developed in a teams problem-solving process.

This research will measure an aspect of individual creativity, spontaneous flexibility, from a psychology perspective and an engineering design perspective. The psychology perspective focuses on an individuals experience and problem-finding ability, while the engineering design perspective focuses on the individuals problem-solving ability. Statistical correlations between these two perspectives will provide insights into the value of an individuals problem-finding abilities when faced with problem-solving tasks. It is hypothesized that when individuals perform these problem-finding or problem-solving tasks, they draw from the same cognitive network of relationships between artifact functions and forms. A cognitive model will be developed to bridge the gap between psychologists view of spontaneous flexibility and applications in engineering design and to isolate the role spontaneous flexibility serves to enhance problem-solving tasks often encountered in engineering design. Spontaneous flexibility will be measured multiple times from both the psychology and design perspectives, providing repeated measures of the individuals spontaneous flexibility. This experiment design and the rigorous data analysis techniques will enable a large portion of the statistical variability to be accounted for, providing new insights and applications of the role spontaneous flexibility serves in engineering design. Statistical analyses of a longitudinal study of engineering students and demographic information will provide an understanding of how students grow in their creativity during their engineering degree and how students background and experiences are related to their spontaneous flexibility.

Iordache M.V.,LeTourneau University | Antsaklis P.J.,University of Notre Dame
Proceedings of the 2010 American Control Conference, ACC 2010 | Year: 2010

The paper introduces a new area of application of the supervisory control (SC) methods and a project dealing with this research topic. Based on the observation that various constraints on the operation and synchronization of concurrent processes can be expressed in terms of SC specifications, the paper proposes the application of SC to the automation of concurrent program synthesis. Specifically, the paper proposes a three-stage approach allowing to generate automatically the part of the programs that deals with the coordination of concurrent processes. In a first stage, Petri net models are extracted from a high level specification. An SC specification is also extracted. Then, SC is applied to generate the supervisor enforcing the specification. Finally, the programs representing the processes and the supervisor are generated. This work is motivated by the difficulty of writing correctly concurrent programs. Since this difficulty is due to the constraints on the operation and synchronization of concurrent processes, research in this area has the potential of simplifying the development of concurrent programs. © 2010 AACC.

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