Clemson University

About: Clemson University is a education organization based out in Clemson, South Carolina, United States. It is known for research contribution in the topics: Population & Control theory. The organization has 20556 authors who have published 42518 publications receiving 1170779 citations. The organization is also known as: Clemson Agricultural College of South Carolina.

A Meta-Analysis of Achievement Motivation Differences between Entrepreneurs and Managers*

Abstract: As a result of conflicting conclusions in primary studies, most narrative reviews have questioned the role of personality in explaining entrepreneurial behavior. We examine one stream of this research by conducting a meta-analysis of studies that contrast the achievement motivation of entrepreneurs and managers. The results indicate that entrepreneurs exhibit higher achievement motivation than managers and that these differences are influenced by the entrepreneur's venture goals, by the use of U.S. or foreign samples, and, to a less clear extent, by projective or objective instrumentation. Moreover, when the analysis is restricted to venture founders, the difference between entrepreneurs and managers on achievement motivation is substantially larger and the credibility intervals do not include zero.

Out-of-School Time Science Activities and Their Association with Career Interest in STEM

Abstract: Spurred by concerns about an inadequately sized science, technology, engineering, and mathematics (STEM) workforce, there has been a growing interest in out-of-school time (OST) science activities as a means to foster STEM career interest. This study examines the association between OST science activities and STEM career interest in university through a logistic regression model and the calculation of prototypical odds ratios. The analysis addresses two main research questions: What is the correlation among different forms of OST activities? And, controlling for student demographic and background variables, what specific forms of OST activities are associated with STEM career interest in university? The study uses data from the ‘Persistence Research in Science and Engineering’ survey (n = 6882), which employs a nationally representative sample of university students enrolled in introductory English courses. Results indicate that students’ participation in OST activities, as well as their middle school int...

Synthetic RNA Polymerase III Promoters Facilitate High-Efficiency CRISPR–Cas9-Mediated Genome Editing in Yarrowia lipolytica

Abstract: The oleaginous yeast Yarrowia lipolytica is a valuable microbial host for chemical production because it has a high capacity to synthesize, modify, and store intracellular lipids; however, rapid strain development has been hampered by the limited availability of genome engineering tools. We address this limitation by adapting the CRISPR–Cas9 system from Streptococcus pyogenes for markerless gene disruption and integration in Y. lipolytica. Single gene disruption efficiencies of 92% and higher were achieved when single guide RNAs (sgRNA) were transcribed with synthetic hybrid promoters that combine native RNA polymerase III (Pol III) promoters with tRNA. The Pol III–tRNA hybrid promoters exploit endogenous tRNA processing to produce mature sgRNA for Cas9 targeting. The highest efficiencies were achieved with a SCR1′–tRNAGly promoter and Y. lipolytica codon-optimized Cas9 expressed from a UAS1B8–TEF promoter. Cotransformation of the Cas9 and sgRNA expressing plasmid with a homologous recombination donor pla...

Oxide thermoelectrics: The challenges, progress, and outlook

Abstract: Most state-of-the-art thermoelectric (TE) materials contain heavy elements Bi, Pb, Sb, or Te and exhibit maximum figure of merit, ZT∼1–2. On the other hand, oxides were believed to make poor TEs because of the low carrier mobility and high lattice thermal conductivity. That is why the discoveries of good p-type TE properties in layered cobaltites NaxCoO2, Ca4Co3O9, and Bi2Sr2Co2O9, and promising n-type TE properties in CaMnO3- and SrTiO3-based perovskites and doped ZnO, broke new ground in thermoelectrics study. The past two decades have witnessed more than an order of magnitude enhancement in ZT of oxides. In this article, we briefly review the challenges, progress, and outlook of oxide TE materials in their different forms (bulk, epitaxial film, superlattice, and nanocomposites), with a greater focus on the nanostructuring approach and the late development of the oxide-based TE module.

Polymer brushes by the "grafting to" method.

Abstract: This paper focuses on the attachment of densely grafted polymer layers (polymer brushes) to various inorganic and polymeric substrates by the "grafting to" method A brief overview of synthesis of polymer brushes by the method is first provided, with emphasis on chemical approaches to polymer attachment The second part of the paper covers the synthesis of polymer layers via a recently developed macromolecular anchoring layer approach Several examples of application of the grafting technique are presented for generation of hydrophobic, hydrophilic, gradient, and switchable surfaces