scholarly journals Effects of Hydropower Dam Operation on Riverbank Stability

2021 ◽  
Vol 6 (9) ◽  
pp. 127
Author(s):  
Soonkie Nam ◽  
Marte Gutierrez ◽  
Panayiotis Diplas ◽  
John Petrie
Keyword(s):  
North Carolina ◽  
Slope Stability ◽  
Fluvial Erosion ◽  
Hydropower Dam ◽  
Roanoke River ◽  
Pore Water Pressures ◽  
Dam Operation ◽  
Climate Events ◽  
Riverbank Stability

The increasing number of extreme climate events has impacted the operation of reservoirs, resulting in drastic changes in flow releases from reservoirs. Consequently, downstream riverbanks have experienced more rapid and frequent changes of the river water surface elevation (WSE). These changes in the WSE affect pore water pressures in riverbanks, directly influencing slope stability. This study presents an analysis of seepage and slope stability for riverbanks under the influence of steady-state, drawdown, and peaking operations of the Roanoke Rapids Hydropower dam on the lower Roanoke River, North Carolina, USA. Although the riverbanks were found to be stable under all the discharge conditions considered, which indicates that normal operations of the reservoir have no adverse effects on riverbank stability, the factor of safety decreases as the WSE decreases. When the role of fluvial erosion is considered, riverbank stability is found to reduce. Drawdown and fluctuation also decrease the safety factor, though the rate of the decrease depends more on the hydraulic conductivity of the soils rather than the discharge pattern.

Distance Learning

1997 ◽  
Vol 9 (2) ◽  
pp. 89-100 ◽  
Author(s):  
Virginia Wilson ◽  
James Litle ◽  
Mary Ruth Coleman ◽  
James Gallagher
Keyword(s):  
North Carolina ◽  
Distance Learning ◽  
Student Selection ◽  
Educational Setting ◽  
Evaluation Plan ◽  
The North ◽  
North Carolina School ◽  
Studio Classroom ◽  
And Mathematics

As the role of distance learning within the educational setting expands, it is imperative that potential producers and receivers of these courses examine the prospects and problems of a distance learning initiative prior to embarking on this new educational journey. The authors provide guidance from their own distance learning experiences at the North Carolina School of Science and Mathematics. The article focuses on the importance of instructor and facilitator training, student selection, physical arrangements for the studio/classroom, and an evaluation plan.

scholarly journals The Value of Citizen Science in Increasing Our Knowledge of Under-Sampled Biodiversity: An Overview of Public Documentation of Auchenorrhyncha and the Hoppers of North Carolina

2021 ◽  
Vol 9 ◽  
Author(s):  
Kyle D. Kittelberger ◽  
Solomon V. Hendrix ◽  
Çağan Hakkı Şekercioğlu
Keyword(s):  
North Carolina ◽  
Citizen Science ◽  
Spatial Scales ◽  
The United States ◽  
Undescribed Species ◽  
The Past ◽  
Global Biodiversity ◽  
Temporal And Spatial

Due to the increasing popularity of websites specializing in nature documentation, there has been a surge in the number of people enthusiastic about observing and documenting nature over the past 2 decades. These citizen scientists are recording biodiversity on unprecedented temporal and spatial scales, rendering data of tremendous value to the scientific community. In this study, we investigate the role of citizen science in increasing knowledge of global biodiversity through the examination of notable contributions to the understanding of the insect suborder Auchenorrhyncha, also known as true hoppers, in North America. We have compiled a comprehensive summary of citizen science contributions—published and unpublished—to the understanding of hopper diversity, finding over fifty previously unpublished country and state records as well as dozens of undescribed and potentially undescribed species. We compare citizen science contributions to those published in the literature as well as specimen records in collections in the United States and Canada, illuminating the fact that the copious data afforded by citizen science contributions are underutilized. We also introduce the website Hoppers of North Carolina, a revolutionary new benchmark for tracking hopper diversity, disseminating knowledge from the literature, and incorporating citizen science. Finally, we provide a series of recommendations for both the entomological community and citizen science platforms on how best to approach, utilize, and increase the quality of sightings from the general public.

Epilogue

2017 ◽  
Author(s):  
Reginald K. Ellis
Keyword(s):  
North Carolina ◽  
African American ◽  
Moral Education ◽  
College Presidents ◽  
Historical Context ◽  
First Century ◽  
Black College ◽  
College President ◽  
American Black

The epilogue reveals the importance of placing African American black college presidents in an historical context. I re-emphasize the role of a black college president as more than an administrator of an institution but a race leader to his community. I also explain the creation of “moderation” in North Carolina and how Shepard help create this approach to the race issue prior to the legal battles surrounding school integration during the 1950s. Finally, I examine how Shepard’s legacy at North Carolina Central University has lasted well into the twenty-first century. This lasting impact is seen in the theory of the “Central Way” of doing things at the school today. This approach is largely based on the foundation of “moral education” that Shepard created in the early to mid-twentieth century.

Introduction

2018 ◽  
Author(s):  
Kenneth Joel Zogry
Keyword(s):  
North Carolina ◽  
Academic Freedom ◽  
Freedom Of Speech ◽  
The State ◽  
The Political ◽  
Student Newspaper ◽  
Research Institution ◽  
The University

The introduction explains the role of the Daily Tar Heel, the UNC student newspaper, in the broader context of the university and the state of North Carolina. It outlines the key arguments and themes in the book: academic freedom, freedom of speech and press; the ideological evolution of the university; the political push-pull over progressivism and conservatism in the state; and the role of big-time athletics at a top-tier research institution.

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