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.

The impact of positivity and transparency on trust in leaders and their perceived effectiveness

Abstract: A critical challenge facing today's organizational leaders is gaining their followers' trust and having them view leaders as effective in addressing turmoil and change. Using a downsizing scenario as the context, this field experiment examined how a leader's positivity and transparency impacted followers' perceived trust, defined in terms of willingness to be vulnerable, and effectiveness of their leader. To test the hypotheses, 304 participants were randomly assigned to one of the four conditions of high (low) leader positivity × high (low) leader transparency. Results of our mixed methods study indicated both the leader's level of positivity and transparency impacted followers' perceived trust and evaluations of leader effectiveness. Besides limitations and suggestions for future research, we conclude with the practical implications that positive, transparent leaders may have on building trust and perceived effectiveness among their followers.

The “movement” of mixed methods research and the role of educators

Abstract: The landscape of research is continually evolving, enabling researchers to study increasingly complex phenomena. Educational researchers have propelled much of this forward progress and have developed novel methodologies to provide increasingly sound and complete evidence. Mixed methods research has emerged alongside quantitative and qualitative approaches as an important tool for researchers. In this article our overall aim is to better acquaint educational scholars with the mixed methods field by articulating the development of the mixed methods field and by citing current trends and issues. The role of educational researchers in the evolution of mixed methods research is highlighted. The early and ongoing dialogue of mixed methods research is multidisciplinary in nature with current writings across fields. The current debate over key aspects of mixed methods research is now in progress and is ripe for future contributions. Even the very nature of what constitutes mixed methods research is being discussed among scholars. Understanding and advancing the mixed methods field is an important goal for methodologists and researchers. With the increased interest and enthusiasm for mixed methods research, it is likely that the dialogue surrounding mixed methods approaches will thrive, continuing the movement of the field. Keywords : educational research; mixed methods South African Journal of Education Vol. 28 (3) 2008: pp. 321-333

Computation Rate Maximization in UAV-Enabled Wireless Powered Mobile-Edge Computing Systems

Abstract: Mobile edge computing (MEC) and wireless power transfer (WPT) are two promising techniques to enhance the computation capability and to prolong the operational time of low-power wireless devices that are ubiquitous in Internet of Things. However, the computation performance and the harvested energy are significantly impacted by the severe propagation loss. In order to address this issue, an unmanned aerial vehicle (UAV)-enabled MEC wireless powered system is studied in this paper. The computation rate maximization problems in a UAV-enabled MEC wireless powered system are investigated under both partial and binary computation offloading modes, subject to the energy harvesting causal constraint and the UAV's speed constraint. These problems are non-convex and challenging to solve. A two-stage algorithm and a three-stage alternative algorithm are respectively proposed for solving the formulated problems. The closed-form expressions for the optimal central processing unit frequencies, user offloading time, and user transmit power are derived. The optimal selection scheme on whether users choose to locally compute or offload computation tasks is proposed for the binary computation offloading mode. Simulation results show that our proposed resource allocation schemes outperforms other benchmark schemes. The results also demonstrate that the proposed schemes converge fast and have low computational complexity.

Development and Validation of a Brief Version of the Difficulties in Emotion Regulation Scale: The DERS-16

Abstract: The Difficulties in Emotion Regulation Scale (DERS) is a widely-used, theoretically-driven, and psychometrically-sound self-report measure of emotion regulation difficulties. However, at 36-items, the DERS may be challenging to administer in some situations or settings (e.g., in the course of patient care or large-scale epidemiological studies). Consequently, there is a need a briefer version of the DERS. The goal of the present studies was to develop and evaluate a 16-item version of the DERS - the DERS-16. The reliability and validity of the DERS-16 were examined in a clinical sample (N = 96) and two large community samples (Ns = 102 and 482). The validity of the DERS-16 was evaluated comparing the relative strength of the association of the two versions of the DERS with measures of emotion regulation and related constructs, psychopathology, and clinically-relevant behaviors theorized to stem from emotion regulation deficits. Results demonstrate that the DERS-16 has retained excellent internal consistency, good test-retest reliability, and good convergent and discriminant validity. Further, the DERS-16 showed minimal differences in its convergent and discriminant validity with relevant measures when compared to the original DERS. In conclusion, the DERS-16 offers a valid and brief method for the assessment of overall emotion regulation difficulties.

What is Authentic Leadership Development

Abstract: In times of swirling negativity, as has occurred in recent years with the dotbombs, September 11 terrorism, gyrating stock values, and the meltdown of corporate ethics, society in general and organizations in particular turn to leaders for optimism and direction. Through the ages, especially in times of crisis and extreme turmoil, historical figures such as Alexander the Great, Washington, Gandhi, Churchill, Eleanor and Franklin Roosevelt, Mandela, and Rudy Guiliani have risen to the occasion to provide the positive leadership to move forward to address the problems confronting their communities and societies. This need for positive leadership is not restricted to the societal/political level. With ever-advancing technology, growing roundthe-clock global competitive pressures, and a very uncertain economic and ethical climate, leaders at all levels and types of organizations are facing the challenge of declining hope and confidence in themselves and their associates. Yet the understanding, developmental process, and implementation of needed positive leadership still remains largely underresearched by both the leadership and recently emerging positive psychology fields. Indeed, this is the only chapter in this book on positive organizational scholarship (POS) that deals directly with leadership, and there are no entries in the recently published Handbook of Positive Psychology (Snyder & Lopez, 2002). Co py ri gh t @ 20 03 . Be rr et tKo eh le r Pu bl is he rs .