Red River Dike Reliability Analysis, From The Past To The Present

2013 ◽  
Author(s):  
Pham Quang Tu ◽  
P. H. A. J. M. Van Gelder ◽  
Tran Van Tu ◽  
Trinh Minh Thu
Keyword(s):  
Reliability Analysis ◽  
Red River ◽  
The Past ◽  
River Dike

Editor's Note

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Emily Kaliel
Keyword(s):  
Civil War ◽  
Public Memory ◽  
Historical Memory ◽  
Historical Analysis ◽  
Red River ◽  
Cultural Institutions ◽  
Economic Rights ◽  
The Past ◽  
Relationship Of

The articles published in our Fall 2016 edition are connected loosely under the themes of public memory and the uses of identity in the past. We are thrilled to present to you three excellent articles in our Fall 2016 edition: The article "Dentro de la Revolución: Mobilizing the Artist in Alfredo Sosa Bravo's Libertad, Cultura, Igualdad (1961)" analyzes Cuban artwork as multi-layered work of propaganda whose conditions of creation, content, and exhibition reinforce a relationship of collaboration between artists and the state-run cultural institutions of post-revolutionary Cuba; moving through fifty years of history “’I Shall Never Forget’: The Civil War in American Historical Memory, 1863-1915" provides a captivating look at the role of reconciliationist and emancipationist intellectuals, politicians, and organizations as they contested and shaped the enduring memory of the Civil War; and finally, the article “Politics as Metis Ethnogenesis in Red River: Instrumental Ethnogenesis in the 1830s and 1840s in Red River” takes the reader through a historical analysis of the development of the Metis identity as a means to further their economic rights. We wholly hope you enjoy our Fall 2016 edition as much as our staff has enjoyed curating it. Editors  Jean Middleton and Emily Kaliel Assistant Editors Magie Aiken and Hannah Rudderham Senior Reviewers Emily Tran Connor Thompson Callum McDonald James Matiko Bronte Wells

System Effects in Generic Risk-Based Inspection Planning

2004 ◽  
Vol 126 (3) ◽  
pp. 265-271 ◽  
Author(s):  
Daniel Straub ◽  
Michael Havbro Faber
Keyword(s):  
Reliability Analysis ◽  
Hot Spots ◽  
Value Of Information ◽  
Structural Reliability ◽  
Inspection Planning ◽  
The Past ◽  
Structural Reliability Analysis ◽  
Structural Details ◽  
The Individual ◽  
Consistent Approach

Reliability and risk-based inspection planning (RBI) has been developed in the past for single structural details subject to fatigue, based on structural reliability analysis. This paper extends the methodology to systems with a stochastic dependency between the individual fatigue hot spots. It addresses the general decision theoretic problems that arise when dealing with RBI of systems. The differences to inspection planning for individual hot spots are listed and discussed. Using a generic format for single hot spots, a consistent approach to the problem is proposed, based on the concept of Value of Information. Possible applications of the methodology are outlined.

scholarly journals An Overview of the Reliability Analysis Methods of Tunneling Equipment

2020 ◽  
Vol 14 (1) ◽  
pp. 218-229
Author(s):  
Sina Ahmadi ◽  
Mohsen Hajihassani ◽  
S. Moosazadeh ◽  
H. Moomivand
Keyword(s):  
Reliability Analysis ◽  
Labor Costs ◽  
Goods And Services ◽  
The Past ◽  
Negative Results ◽  
System A ◽  
Equipment Reliability ◽  
Tree Methods ◽  
The Cost

The absolute prevention of damage occurrence is not possible, thus reducing the probability of failure in a system and its impact is very important regarding the operation of a whole system. A failure in a system or in its subsystems makes negative results such as the stop in the production process, rising labor costs, and increasing the cost of maintenance. Reliability, in recent years, is mentioned as one of the most significant aspects of the quality of goods and services. In the past, reliability concerned sensitive and complex industries such as military, nuclear, and aerospace where the lack of their reliability could cause irreparable damage to the entire system. However, today it has become a universal concern. Tunneling equipment has grown in size and complexity and therefore, lack of reliability may cause massive costs to this equipment. Therefore, reliability determination in order to identify the components and subsystems with low reliability is essential. The aim of this study is to review the methods of tunneling equipment reliability analysis including statistical analysis, failure mode and effects analysis, Markov and fault tree methods. In addition, previous available research on the reliability analysis of tunneling equipment is presented.

scholarly journals Adaptation of Phytophthora sojae to Rps Resistance Genes over the Past Two Decades in North Dakota

2019 ◽  
Vol 20 (2) ◽  
pp. 88-93 ◽  
Author(s):  
Hui Yan ◽  
Berlin Nelson
Keyword(s):  
North Dakota ◽  
Resistance Genes ◽  
Root Rot ◽  
Phytophthora Sojae ◽  
Red River ◽  
Phytophthora Root Rot ◽  
Red River Valley ◽  
The Past ◽  
Primary Management ◽  
New Strategies

Phytophthora root rot, caused by Phytophthora sojae, is a major disease of soybean in North Dakota, especially in the Red River Valley (RRV). Planting resistant cultivars is the primary management. The resistance genes Rps 1c, 1k, 3a, and 6 are the most common genes deployed in this region. To determine the efficacy of these genes and document the pathotype changes in the population of P. sojae over several decades, a survey of pathotypes was conducted in 2015 in three counties in the southern RRV and compared with similar surveys conducted in 1991 to 1994 and 2002 to 2004 in the same area. The results showed that from 1991 to 1994 when 6% of the pathotypes could defeat the Rps1c gene, by 2004 it was 57% of the pathotypes, and that percentage remained the same in 2015. However, in 1994 no pathotype could defeat Rps 1k, but by 2004 it was 12% and in 2015 it was 41%. Pathotypes that defeat Rps 3a and 6 have been few over the years. Pathotypes that defeat both 1c and 1k increased from none to 31% between 1994 and 2015. With the increasing complexity of P. sojae pathotypes, new strategies for managing this pathogen in the future will be needed.

scholarly journals Verification of a reliability analysis for long continuous structure considering investigation sites on the 20km-long river dike incurred the earthquake disaster

2014 ◽  
Vol 9 (2) ◽  
pp. 203-217
Author(s):  
Yu OTAKE ◽  
Yusuke HONJO ◽  
Yuichi HIRAMATSU ◽  
Ikumasa YOSHIDA ◽  
Shunsuke SAKO ◽  
...  
Keyword(s):  
Reliability Analysis ◽  
Earthquake Disaster ◽  
Continuous Structure ◽  
River Dike

The need for paleoflood investigations on the American reach of the Red River of the North

The Holocene ◽  
2021 ◽  
pp. 095968362110605
Author(s):  
Scott St. George ◽  
Joseph Zeleznik ◽  
Judith Avila ◽  
Matthew Schlauderaff
Keyword(s):  
United States ◽  
The United States ◽  
Flood Frequency ◽  
Red River ◽  
Past Century ◽  
Policy Makers ◽  
The Past ◽  
The North ◽  
Diversion Channel ◽  
History Of

Over the past century, the Red River of the North has been the least stationary river in the continental United States. In Canada, historical and paleoenvironmental evidence indicates severe floods were common during the early 1800s, with the record ce 1826 flood having an estimated peak discharge 50% higher than the second-most severe flood ever observed. Unfortunately, the recorded history of flooding upstream in the United States does not begin until seven decades after this event. If 1826 was an equally exceptional flood on American reach of the river, then current flood-frequency curves for the river underestimate significantly the risks posed by future flooding. Alternatively, if the American stretch did not produce a major flood in 1826, then the recent spate of flooding that has occurred over the past two decades is exceptional within the context of the past 200 years. Communities in the Fargo-Moorhead metropolitan area are building a 58-km long, $2.75 billion (USD) diversion channel that would redirect floodwaters westward around the two cities before returning it to the main channel. Because this and other infrastructure in North Dakota and Minnesota is intended to provide protection against low-probability, high-magnitude floods, new paleoflood investigations in the region would help local, state, and federal policy-makers better understand the true flood threats posed by the Red River of the North.

System Effects in Generic Risk Based Inspection Planning

2002 ◽  
Author(s):  
Daniel Straub ◽  
Michael Havbro Faber
Keyword(s):  
Reliability Analysis ◽  
Hot Spots ◽  
Value Of Information ◽  
Structural Reliability ◽  
Inspection Planning ◽  
The Past ◽  
Structural Reliability Analysis ◽  
The Individual ◽  
Consistent Approach

Reliability and risk based inspection planning (RBI) has been developed in the past for single details subject to fatigue based on structural reliability analysis. This paper extends the methodology to systems with a stochastic dependency between the individual hot spots. It addresses the general decision theoretic problems that arise when dealing with RBI of systems. The differences to inspection planning for individual hot spots are listed and discussed. Using a generic format for single hot spots, a consistent approach to the problem is proposed, based on the concept of Value of Information. Possible application of the methodology is outlined.

scholarly journals Flood Ring Evidence and its Application to Paleoflood Hydrology of the Red River and Assiniboine River in Manitoba*

2004 ◽  
Vol 56 (2-3) ◽  
pp. 181-190 ◽  
Author(s):  
Scott St. George ◽  
Erik Nielsen
Keyword(s):  
Wood Fiber ◽  
Growing Season ◽  
Red River ◽  
Geological Evidence ◽  
Anatomical Features ◽  
The Past ◽  
Red River Basin ◽  
Forcing Mechanisms ◽  
Large Floods ◽  
Frequency Magnitude

Abstract Although paleoflood records developed from tree rings are much shorter than those developed from geological evidence, their brevity is offset by their exceptional utility for dating floods to a specific year. Inundation at the beginning of the growing season disturbs cambial processes in riparian Quercus spp., causing unusual anatomical features to develop within the annual ring, including small earlywood vessels, disrupted flame parenchyma and less wood fiber. These features are most strongly developed near the tree base, and may be caused by disruptions of auxin flow. Anatomical flood signatures can be used to determine the frequency, magnitude and hydrological causes of past floods, and to identify the influence of potential forcing mechanisms. In the lower Red River basin, Canada, flood-ring evidence has been used to identify several large floods during the mid 1700s, the early to mid 1800s and the latter half of the 20th century. Records for the Assiniboine River and the American portion of the Red River are developed from fewer trees, but suggest that severe floods in the Red and Assiniboine basins have coincided, albeit infrequently, during the past 500 years.

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