University of Nebraska Omaha

About: University of Nebraska Omaha is a education organization based out in Omaha, Nebraska, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 4526 authors who have published 8905 publications receiving 213914 citations. The organization is also known as: UNO & University of Omaha.

The role of additive manufacturing and antimicrobial polymers in the COVID-19 pandemic.

Abstract: The capitol of Hubei province in China, Wuhan, became the center of an outbreak of pneumonia of unknown cause in December 2019 [1]. This outbreak of pneumonia was the emergence of the novel coronav...

An improved string composition method for sequence comparison

Abstract: Historically, two categories of computational algorithms (alignment-based and alignment-free) have been applied to sequence comparison–one of the most fundamental issues in bioinformatics. Multiple sequence alignment, although dominantly used by biologists, possesses both fundamental as well as computational limitations. Consequently, alignment-free methods have been explored as important alternatives in estimating sequence similarity. Of the alignment-free methods, the string composition vector (CV) methods, which use the frequencies of nucleotide or amino acid strings to represent sequence information, show promising results in genome sequence comparison of prokaryotes. The existing CV-based methods, however, suffer certain statistical problems, thereby underestimating the amount of evolutionary information in genetic sequences. We show that the existing string composition based methods have two problems, one related to the Markov model assumption and the other associated with the denominator of the frequency normalization equation. We propose an improved complete composition vector method under the assumption of a uniform and independent model to estimate sequence information contributing to selection for sequence comparison. Phylogenetic analyses using both simulated and experimental data sets demonstrate that our new method is more robust compared with existing counterparts and comparable in robustness with alignment-based methods. We observed two problems existing in the currently used string composition methods and proposed a new robust method for the estimation of evolutionary information of genetic sequences. In addition, we discussed that it might not be necessary to use relatively long strings to build a complete composition vector (CCV), due to the overlapping nature of vector strings with a variable length. We suggested a practical approach for the choice of an optimal string length to construct the CCV.

A maturing of research on the behaviour of eyewitnesses

Abstract: More than a decade of sustained, vigorous research has resulted in an applied cognitive psychology of eyewitness behvaviour that is a rapidly maturing body of knowledge. Several developments now would police forces to increase the sensitivity, reliability, and fairness of eyewitness memory retrieval. The juror's task of estimating the effects of certain variables on the accuracy of eyewitness report can now be a much more informed one, the relevant research literature now being relatively clear and consistent. Across studies the effect size of a number of these variables is moderate or greater. Equally important has been the consistent failure to document several results that would be predicted from the common-sense intuition of juror and jurist alike.

The Genetic Basis of Creativity and Ideational Fluency

Abstract: Reuter, Roth, Holve, & Hennig (2006) described what they called the first candidate gene for creativity. This study replicated and extended their work for a more careful analysis of five candidate genes: Dopamine Transporter (DAT), Catechol-O-Methyltransferase (COMT), Dopamine Receptor D4 (DRD4), D2 Dopamine Receptor (DRD2), and Tryptophane Hydroxylase (TPH1). Participants were 147 college students who received a battery of tests of creative potential. Multivariate analyses of variance indicated that ideational fluency scores were significantly associated with several genes (DAT, COMT, DRD4, and TPH1). This was apparent in both verbal and figural fluency ideation scores, before and after controlling general intelligence. Yet fluency, alone, is not an adequate measure of creativity, and the index that is by far the most important part of creativity (i.e., originality) had a negligible relationship with the genes under investigation. Hence, in contrast to earlier research, the conclusion offered here is tha...

On The Relationship Between Idea-Quantity and Idea-Quality During Ideation

Abstract: A great deal of research has been conducted to develop methods and techniques to improve group ideation. Most of this research focuses on techniques for increasing the quantity of ideas generated during ideation; less attention has been given to the quality of the ideas produced. This focus stems from the widely held quantity–quality conjecture, that, all else being equal, more ideas give rise to more good ideas. In this paper, we argue that cognitive inertia and scarcity of solution space may affect the relationship between idea-quantity and idea-quality as ideation proceeds, resulting in a condition of diminishing returns for additional ideas. Results of a laboratory study using fourteen groups supported the diminishing returns hypothesis. Recommendations for future ideation research are suggested.