University of Nebraska–Lincoln

About: University of Nebraska–Lincoln is a education organization based out in Lincoln, Nebraska, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 28059 authors who have published 61544 publications receiving 2139104 citations. The organization is also known as: Nebraska & UNL.

Impact of positive psychological capital on employee well-being over time.

Abstract: The recently recognized core construct of psychological capital or PsyCap (consisting of the positive psychological resources of efficacy, hope, optimism, and resilience) has been demonstrated to be related to various employee attitudinal, behavioral, and per formance outcomes. However, to date, the impact of this positive core construct over time and on important employee well-being outcomes has not been tested. This study meets this need by analyzing the relationship between a broad cross-section of employees’ (N = 280) level of PsyCap and two measures of psychological well-being over time. The results indicated that employees’ PsyCap was related to both measures of well-being and, importantly, that PsyCap explained additional variance in these well-being measures over time. The limitations, needed future research, and practical implications conclude the article.

Proline Mechanisms of Stress Survival

Abstract: Significance: The imino acid proline is utilized by different organisms to offset cellular imbalances caused by environmental stress. The wide use in nature of proline as a stress adaptor molecule indicates that proline has a fundamental biological role in stress response. Understanding the mechanisms by which proline enhances abiotic/biotic stress response will facilitate agricultural crop research and improve human health. Recent Advances: It is now recognized that proline metabolism propels cellular signaling processes that promote cellular apoptosis or survival. Studies have shown that proline metabolism influences signaling pathways by increasing reactive oxygen species (ROS) formation in the mitochondria via the electron transport chain. Enhanced ROS production due to proline metabolism has been implicated in the hypersensitive response in plants, lifespan extension in worms, and apoptosis, tumor suppression, and cell survival in animals. Critical Issues: The ability of proline to influence...

An Insider's Critique of the Social Movement Framing Perspective*

Abstract: In the last decade the framing perspective has gained increasing popularity among social movement researchers and theorists. Surprisingly, there has been no critical assessment of this growing body of literature. Though the perspective has made significant contributions to the movements literature, it suffers from several shortcomings. These include neglect of systematic empirical studies, descriptive bias, static tendencies, reification, reductionism, elite bias, and monolithic tendencies. In addition to a critique of extant movement framing literature, I offer several remedies and illustrate them with recent work. The articles by Francesca Polletta, John H. Evans, Sharon Erickson Nepstad, and Ira Silver in this special section address several of the concerns raised in this critique and, in so doing, contribute to the integration of structural and cultural approaches to social movements.

Tunneling Across a Ferroelectric

Abstract: Spontaneously polarized materials through which electrons pass by tunneling may be used in novel electronic devices and may reveal new basic physics at the nanometer scale.

Large fill-factor bilayer iodine perovskite solar cells fabricated by a low-temperature solution-process

Abstract: This work studied the influence of the methylammonium iodide/lead iodine precursor ratio on the perovskite film morphology and device performance. Using a non-stoichiometric precursor solution was demonstrated to be critical to form stoichiometric perovskite films. The compositions of the spun perovskite films were very sensitive to the surface of substrates, and can be very different from that in precursor solutions. Remarkably, we found that the unique double fullerene layers adopted could dramatically reduce dark current leakage by forming a Schottky junction with the anode, and effectively passivate traps in perovskite to increase the efficiency by boosting the fill factor to above 80% for perovskite solar cells.