University of Houston

About: University of Houston is a education organization based out in Houston, Texas, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 23074 authors who have published 53903 publications receiving 1641968 citations.

A review of structure in the selection interview

Abstract: Virtually every previous review has concluded that structuring the selection interview improves its psychometric properties. This paper reviews the research literature in order to describe and evaluate the many ways interviews can be structured. Fifteen components of structure are identified that may enhance either the content of the interview or the evaluation process in the interview. Each component is explained in terms of its various operationalizations in the literature. Then, each component is critiqued in terms of its impact on numerous forms of reliability, validity, and user reactions. Finally, recommendations for research and practice are presented. It is concluded that interviews can be easily enhanced by using some of the many possible components of structure, and the improvement of this popular selection procedure should be a high priority for future research and practice.

Reconfigurable Intelligent Surfaces for Wireless Communications: Principles, Challenges, and Opportunities

Abstract: Recently there has been a flurry of research on the use of reconfigurable intelligent surfaces (RIS) in wireless networks to create smart radio environments. In a smart radio environment, surfaces are capable of manipulating the propagation of incident electromagnetic waves in a programmable manner to actively alter the channel realization, which turns the wireless channel into a controllable system block that can be optimized to improve overall system performance. In this article, we provide a tutorial overview of reconfigurable intelligent surfaces (RIS) for wireless communications. We describe the working principles of reconfigurable intelligent surfaces (RIS) and elaborate on different candidate implementations using metasurfaces and reflectarrays. We discuss the channel models suitable for both implementations and examine the feasibility of obtaining accurate channel estimates. Furthermore, we discuss the aspects that differentiate RIS optimization from precoding for traditional MIMO arrays highlighting both the arising challenges and the potential opportunities associated with this emerging technology. Finally, we present numerical results to illustrate the power of an RIS in shaping the key properties of a MIMO channel.

Chiral 2,2'-bipyridines, 1,10-phenanthrolines, and 2,2':6',2' '-terpyridines: syntheses and applications in asymmetric homogeneous catalysis.

Abstract: Although chiral phosphines have enjoyed a longtime popularity in the design of enantioselective catalytic systems, there has been a recent renaissance in the use of nitrogen ligands for this same purpose.1 This renaissance partly arises from several distinct advantages presented by nitrogen-containing ligands. First, they can often be employed in catalytic processes where the use of phosphines may be incompatible with the reaction conditions. Second, many nitrogen ligands are now available in enantiomerically pure form. Third, ligands that bind through nitrogen are known to coordinate with a wide variety of metal ions, and considerable progress has been made in understanding the role which these ligands play in affecting catalytic processes.

Self-Efficacy and Classroom Learning

Abstract: This article discusses the role of perceived self-efficacy during classroom learning of cognitive skills. Self-efficacy refers to personal judgments of performance capabilities in a given domain of activity. Students enter classroom activities with various aptitudes and prior experiences, which affect their initial sense of self-efficacy for learning. During task engagement, students may assess self-efficacy by utilizing cues made cognitively salient by educational practices and which convey information about their capability to acquire knowledge and skills, such as performance outcomes, attributions, situational circumstances, outcome patterns, perceived model similarity, and persuader credibility. In turn, heightened learning self-efficacy enhances motivated learning, or motivation to acquire knowledge and skills. Research findings are presented showing how different educational practices affect self-efficacy. Future research needs to determine how students derive efficacy information from multiple cues, and to specify in finer detail how the cognitive processes involved in understanding instruction and appraising self-efficacy influence one another.