scholarly journals Observed Performance of Highway Embankment over Soft Marine Clay: A Case Study in Wenzhou, China

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Xia Bian ◽  
Jin-Kai Yan ◽  
Wei Zhang
Keyword(s):  
Lateral Displacement ◽  
Ground Settlement ◽  
Ground Displacement ◽  
Marine Clay ◽  
Construction Time ◽  
History Of ◽  
Design Requirements ◽  
Embankment Stability ◽  
Highway Embankment

This paper presents a case history of observed performance of highway embankment over soft marine clay in Wenzhou, China. During the embankment construction, the changes of ground settlement, ground displacement, and lateral displacement of subsoil with the construction time were monitored and analyzed. The monitoring results indicate that the ground settlement and lateral displacement of subsoil account for about 75% in the process of embankment construction. The measured maximum values of ground settlement, ground displacement, and lateral displacement of subsoil are 37.88 mm, 21.50 mm, and 23.56 mm, respectively. After the completion of the embankment construction, the settlement gradually tended to be stable. It is suggested that the monitoring data of settlement and displacement of embankment are smaller than the design requirements, and the embankment stability is also ensured.

scholarly journals Risk and Resilience at the Oroville Dam

2018 ◽  
Vol 3 (4) ◽  
pp. 49 ◽  
Author(s):  
Lucien Hollins ◽  
Daniel Eisenberg ◽  
Thomas Seager
Keyword(s):  
The United States ◽  
Catastrophic Failure ◽  
Risk And Resilience ◽  
Root Cause ◽  
Engineering Designs ◽  
History Of ◽  
Design Requirements ◽  
Adaptive Decision Making

Existing analyses of the February 2017 Oroville Dam Crisis identify maintenance failures and engineering shortcomings as the root cause of a nearly catastrophic failure of the tallest dam in the United States. However, the focus on technical shortcomings largely overlooks the role of adaptive decision-making that eventually averted the crisis. Understanding the decisions that both created the circumstances leading up to the crisis and saved the dam from collapse requires that risk analysis be complemented by a resilience perspective. This paper presents a case study on the Oroville Dam Crisis to develop a timeline of failures and successes in the resilience processes of sensing, anticipation, adapting, and learning throughout the history of the dam. Three factors that drove poor operational and engineering decisions include: (1) misalignment of technical nomenclature and design requirements for the ungated spillway, (2) overconfidence in original engineering designs, and (3) conflicting pressure from diverse stakeholders. These factors contributed to unrealistic perceptions of dam capabilities and promoted decisions to forgo maintenance and design efforts that may have mitigated the danger.

Press Propaganda and Subaltern Agents of Pan-Islamic Networks in the Muslim Mediterranean World prior to World War I

2018 ◽  
Author(s):  
Odile Moreau
Keyword(s):  
Middle East ◽  
World War I ◽  
North Africa ◽  
World War ◽  
Subaltern Studies ◽  
Resistance Movements ◽  
The Press ◽  
Mediterranean World ◽  
History Of

This chapter explores movement and circulation across the Mediterranean and seeks to contribute to a history of proto-nationalism in the Maghrib and the Middle East at a particular moment prior to World War I. The discussion is particularly concerned with the interface of two Mediterranean spaces: the Middle East (Egypt, Ottoman Empire) and North Africa (Morocco), where the latter is viewed as a case study where resistance movements sought external allies as a way of compensating for their internal weakness. Applying methods developed by Subaltern Studies, and linking macro-historical approaches, namely of a translocal movement in the Muslim Mediterranean, it explores how the Egypt-based society, al-Ittihad al-Maghribi, through its agent, Aref Taher, used the press as an instrument for political propaganda, promoting its Pan-Islamic programme and its goal of uniting North Africa.

Turning Aliens into Socialists

2010 ◽  
Vol 1 (1) ◽  
pp. 75-93
Author(s):  
Jessica Moberg
Keyword(s):  
Outer Space ◽  
The United States ◽  
Second World War ◽  
World War ◽  
History Of ◽  
Swedish History ◽  
Second World ◽  
The Universe ◽  
Highly Evolved

Immediately after the Second World War Sweden was struck by a wave of sightings of strange flying objects. In some cases these mass sightings resulted in panic, particularly after authorities failed to identify them. Decades later, these phenomena were interpreted by two members of the Swedish UFO movement, Erland Sandqvist and Gösta Rehn, as alien spaceships, or UFOs. Rehn argued that ‘[t]here is nothing so dramatic in the Swedish history of UFOs as this invasion of alien fly-things’ (Rehn 1969: 50). In this article the interpretation of such sightings proposed by these authors, namely that we are visited by extraterrestrials from outer space, is approached from the perspective of myth theory. According to this mythical theme, not only are we are not alone in the universe, but also the history of humankind has been shaped by encounters with more highly-evolved alien beings. In their modern day form, these kinds of ideas about aliens and UFOs originated in the United States. The reasoning of Sandqvist and Rehn exemplifies the localization process that took place as members of the Swedish UFO movement began to produce their own narratives about aliens and UFOs. The question I will address is: in what ways do these stories change in new contexts? Texts produced by the Swedish UFO movement are analyzed as a case study of this process.

A Case Study on the Process of Creating Interests in History of History-Deokhu

2019 ◽  
Vol 58 (1) ◽  
pp. 147-159
Author(s):  
Young-Seok Seo ◽  
Bong-Seok Kim
Keyword(s):  
History Of

Scales and Units

2018 ◽  
Author(s):  
Kathryn M. de Luna
Keyword(s):  
Language Change ◽  
Historical Linguistics ◽  
Bantu Languages ◽  
The North ◽  
First Case ◽  
Linguistic Evidence ◽  
River Region ◽  
History Of ◽  
Alternative Approaches

This chapter uses two case studies to explore how historians study language movement and change through comparative historical linguistics. The first case study stands as a short chapter in the larger history of the expansion of Bantu languages across eastern, central, and southern Africa. It focuses on the expansion of proto-Kafue, ca. 950–1250, from a linguistic homeland in the middle Kafue River region to lands beyond the Lukanga swamps to the north and the Zambezi River to the south. This expansion was made possible by a dramatic reconfiguration of ties of kinship. The second case study explores linguistic evidence for ridicule along the Lozi-Botatwe frontier in the mid- to late 19th century. Significantly, the units and scales of language movement and change in precolonial periods rendered visible through comparative historical linguistics bring to our attention alternative approaches to language change and movement in contemporary Africa.

Case Study: Rome's House of Memory and History: The Politics of Memory and Public Institutions

2012 ◽  
Author(s):  
Alessandro Portelli
Keyword(s):  
Oral History ◽  
Cultural Policy ◽  
Public Institutions ◽  
Politics Of Memory ◽  
Political Events ◽  
History Of ◽  
Ambitious Program ◽  
The City

This article centers around the case study of Rome's House of Memory and History to understand the politics of memory and public institutions. This case study is about the organization and politics of public memory: the House of Memory and History, established by the city of Rome in 2006, in the framework of an ambitious program of cultural policy. It summarizes the history of the House's conception and founding, describes its activities and the role of oral history in them, and discusses some of the problems it faces. The idea of a House of Memory and History grew in this cultural and political context. This article traces several political events that led to the culmination of the politics of memory and its effect on public institutions. It says that the House of Memory and History can be considered a success. A discussion on a cultural future winds up this article.

The Wolf Man’s Glückshaube: Rereading Sergei Pankejeff’s Memoir

2019 ◽  
Vol 67 (5) ◽  
pp. 789-814
Author(s):  
Anat Tzur Mahalel
Keyword(s):  
Complex Matrix ◽  
Neurotic Symptom ◽  
History Of ◽  
The Veil ◽  
Wolf Man

A comparative reading of Freud’s canonical case study “From the History of an Infantile Neurosis” (1918) and the memoir written by the protagonist of that study, Sergei Pankejeff, known as the Wolf Man (1971a), centers on the complex matrix of meanings embodied in the act of lifting the veil. The neurotic symptom of a veil seemingly in front of the analysand’s eyes is interpreted by Freud as a repetition of his birth in a Glückshaube (German for “caul,” literally a “lucky hood”). The veil is represented as an ambivalent object both for Freud and for Pankejeff, who are enticed by the sense of a final truth behind the veil yet constantly doubt the possibility of grasping it. For Freud, psychoanalysis is the very process of lifting the veil, yet his analysand remained for him an unsolved riddle. Pankejeff, in a volume dedicated to his identity as the Wolf Man (Gardiner 1971a), created an autobiographical text that deliberately avoids telling the story of the analysand, thus drawing a veil over his story. The paradox embodied in lifting the veil is discussed in relation to Walter Benjamin’s distinction between materiality and truth and his notion of the inherent unity of the veil and the veiled (1925).

scholarly journals Comparison of Novel Seismic Protection Devices to Attenuate the Earthquake Induced Energy

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 73
Author(s):  
Osman Hansu ◽  
Esra Mete Güneyisi
Keyword(s):  
Lateral Displacement ◽  
Time History ◽  
Seismic Protection ◽  
Base Shear ◽  
Seismic Demands ◽  
Nonlinear Time History Analyses ◽  
History Of ◽  
Protection Devices ◽  
Nonlinear Time History ◽  
Better Than

This study addresses an alternative use of viscous dampers (VDs) associated with buckling restrained braces (BRBs) as innovative seismic protection devices. For this purpose, 4-, 8- and 12-story steel bare frames were designed with 6.5 m equal span length and 4 m story height. Thereafter, they were seismically improved by mounting the VDs and BRBs in three patterns, namely outer bays, inner bays, and all bays over the frame heights. The structures were modeled using SAP 2000 software and evaluated by the nonlinear time history analyses subjected to the six natural ground motions. The seismic responses of the structures were investigated for the lateral displacement, interstory drift, absolute acceleration, maximum base shear, and time history of roof displacement. The results clearly indicated that the VDs and BRBs reduced seismic demands significantly compared to the bare frame. Moreover, the all-bay pattern performed better than the others.

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