Liquefaction-Induced Lateral Load on Pile in a Medium Dr Sand Layer

One-g shake-table experiments are conducted to explore the response of single piles due to liquefaction-induced lateral soil flow. The piles are embedded in saturated Medium Relative Density (Dr) sand strata 1.7–5.0 m in thickness. Peak lateral pile displacements and bending moments are recorded and analyzed by uniform and triangular pressure distributions. On this basis, the observed levels of pile bending moment upon liquefaction suggest a hydrostatic lateral pressure approximately equal to that due to the total overburden stress. Using the experimental data, comparisons with current recommendations are made, and the Showa Bridge case history is briefly assessed.     

“I am ripe for man”: Gendered Time in Thomas Heywood’s An Emblematicall Dialogue (1637)

In Thomas Heywood’s Emblematicall Dialogue (1637), “Two modest Virgins, of unequall time” discuss love and marriage, focusing on the crucial moment when the maid makes her transition from maid to wife. As the meaning of each naked emblem and of the dialogue form as a whole is revealed through the passing moments of the argument so is the meaning of this moment in time which the maid faces. Cultural and biological imperatives construct time for the maid and become the ground of the debate and of her choices at this pivotal moment which will determine her success or failure as a woman in seventeenth-century England.     

Quantification of Linked Column Frame Seismic Performance Factors for Use in Seismic Design

Previous research has proposed the Linked Column Frame (LCF) as a lateral load-resisting system capable of providing rapid return to occupancy for buildings impacted by moderate earthquake events and collapse prevention in very large events. The LCF consists of flexible moment frames (MF) and linked columns (LC), which are closely spaced dual columns interconnected with bolted links. The linked columns (LC) are designed to limit seismic forces and provide energy dissipation through yielding of the links, while preventing damage to the moment frame under certain earthquake hazard levels. The proposed design procedure ensures the links of the linked column yield at a significantly lower story drift than the beams of the moment frame, enabling design of this system for two distinct performance states: rapid repair, where only link damage occurs and quick link replacement is possible; and collapse prevention, where both the linked column and moment frame may be damaged.

Here, the seismic performance factors for the LCF system, including the response modification factor, R, the system over-strength factor, Ω₀, and the deflection amplification factor, C_d, are established following the procedures described in FEMA P695 [2009]. These parameters are necessary for inclusion of the system in the building code. This work describes the development of archetype structures, numerical models of the LCF systems, incremental dynamic analyses, and interpretation of the results. From the results, it is recommended that R, Ω₀, and C_d values of 8, 3, and 5.5 be used for seismic design of the LCF system. A height limit of 35 m (115ft) is recommended at this time as taller LCFs are not considered in this study.     

The Political Forest in the Era of Green Neoliberalism

Nancy Peluso and Peter Vandergeest first used the term “political forest” to denaturalise forests, refiguring them as political-ecological entities. Across three moments of colonialism, post-colonial independence, and counter-insurgency struggles, they analyse how states in Southeast Asia (re)made forests as a means of territorialising power. More recently, they identify a fourth, contemporary moment characterised by the entry of diverse non-state actors into the making of forests, and a shift in the rationalities and technologies of forest management. We label this fourth moment “green neoliberalism” to identify an era of global environmental governance characterised by market-based solutions to socio-ecological problems, biodiversity conservation and carbon sequestration priorities, and new moral and scientific claims to forests spanning a variety of sites and scales. The papers in this symposium transport the analytic of the political forest to Colombia, the Democratic Republic of Congo, Guatemala, Indonesia, Madagascar, Singapore, and Thailand to examine how green neoliberalism’s discourses and practices have created new sites and expressions of territorialisation, governance, knowledge production, and subject formation. In doing so, they illuminate the multiplicity of actors (re)making political forests at a moment when forests’ virtues as carbon sinks and biodiversity hotspots draw massive flows of capital and justify remaking socio-ecological relations across the globe.     

Quantitative estimation of overpressure caused by gas generation and application to the Baiyun Depression in the Pearl River Mouth Basin,South China Sea

Hydrocarbon generation can yield high fluid pressures in sedimentary basins as the conversion of solid kerogen to hydrocarbons can result in an increase in fluid volume. To quantify the relationship between gas generation and overpressure in source rocks, a set of equations for computing the pressure change due to gas generation has been derived. Those equations can be used to quantitatively estimate overpressure generated by type III kerogen in source rocks by considering gas generation and leakage, gas dissolution in formation water and residual oil, thermal cracking of oil to gas, and hydrocarbon episodic expulsion from source rocks. The equations also take consideration of other factors including source rock porosity, transformation ratio, total organic carbon (TOC), hydrogen index, and compressibility of kerogen, oil, and water. As both oil and gas are taken into account in the equations, they can also be used to estimate the evolution of overpressure caused by hydrocarbon generation of type I and type II kerogen source rocks. Sensitivity analyses on the type III kerogen source rock indicate that hydrogen index is the most influential parameter for overpressure generation, while TOC and residual gas coefficient (β: ratio of residual gas over the total gas generated) have a moderate effect. Overpressure can be generated even if the gas leakage/loss in the source rock is up to 80% of the total gas generated. This suggests that the internal pressure seal of the source rock is not a critical factor on the pressure change as long as the source rocks are capable of sealing liquid oil. The equations were applied to evaluate the overpressure in the Eocene–Oligocene Enping Formation source rocks due to hydrocarbon generation in the Baiyun Depression, the Pearl River Mouth Basin by considering the source rock properties, hydrocarbon generation history, and hydrocarbon expulsion timing. Two episodes of overpressure development due to gas generation and release were modeled to have occurred in the Enping Formation source rock since 16 Ma. The overpressure release at 10.2–5.3 Ma via hydrocarbon expulsion was apparently related to the Dongsha phase of tectonic deformation, whereas the pressure release at 2–0 Ma was due to pressure generation that was exceeded the fracture‐sealing pressure in the source rocks.     

Partners Connection Process and Spatial Effects: New Insights from a Comparative Inter-Organizational Partnerships Analysis

This article attempts to give new explanations of the spatial patterns of collaborations focusing on the partners' connection process. Taking into account actors are embedded in an historical, interpersonal and institutional space, we first consider organizations can construct a new collaboration or renew an old one when they decide to build a research project with a partner. Then, going back to the moment when they initially connect with their partners through the analysis of the genesis of collaborations, we assume that they can turn to their interpersonal ties or to coordination resources. This process of connection may influence the spatial dimensions of collaborations regarding notably the literature linking the use of interpersonal ties and the spatial proximity effects observed in innovation activities. We test empirically these theoretical propositions through the collection of individual data about more than 200 histories of inter-company (IC) and science-industry (SI) partnerships. The qualitative and quantitative treatments of these data reveal the way partners connect each other and the spatial patterns of collaborations are significantly dependent on the nature of the partnerships. A strong regularity is nevertheless highlighted: for both partnerships (IC and SI ones), actors renewed prior collaborations in 57% of the total of studied partnerships.     

Dynamic Stability and Design of C-Bent Columns

Symmetrically reinforced bridge columns with a horizontal cantilever in one direction, called C-bent columns, tend to deform predominantly in the direction of applied moment when subject to strong earthquake shaking. For this reason, the strength in the direction of applied moment is generally increased in design. This article describes the use of inelastic dynamic time history analyses with a suite of ground motion records to quantify the amount of strength increase required to minimize likely peak and permanent displacement demands. It is shown that the strength should be increased by approximately 2.3 times the applied moment in design.     

MOMENT RESISTING WELDED CONNECTIONS: AN EXTENSIVE REVIEW OF DESIGN PRACTICE AND EXPERIMENTAL RESEARCH IN USA,JAPAN AND EUROPE

Welded connections, widely used in seismic moment resisting frames (MRFs) in USA, Japan and Europe, have been extensively investigated during the 1990s in order to improve their performance under severe earthquakes. In order to correctly evaluate the results of experimental research on welded connections, the differences among the American, Japanese and European current practices in designing the frame structural systems and in detailing the beam-to-column connections should be firstly appraised. In this paper, the major aspects characterising the USA, Japan and Europe design practice in moment resisting welded connections are reported, the differences are underlined and the main issues recently addressed in experimental research are reviewed. Among the several parameters which affect the connection performance, attention is focused on the effect of the beam cross-section size. Thus conclusions are drawn in terms of plastic rotation capacity as dependant on the beam size.     

REAPPRAISAL OF MAGNITUDE OF 20TH CENTURY EARTHQUAKES IN SWITZERLAND

We reappraise the material needed to assess the 20th-century seismicity of Switzerland and of the adjacent areas of the Alps in terms of magnitude. For this we make use of macroseismic reports and literature and by calculating the surface-wave magnitude from the Prague formula of all significant earthquakes in the region. No attempt is made to relocate earthquake positions; instead their reliability is ranked using existing solutions and macroseismic observations We find that for small earthquakes (M _s >4.5), which constitute the bulk of the events in the region, the calculation of M _s observed at relatively short distances, requires station and distance corrections which can be significant. Also we find that recomputed Ms estimates differ from those reported in other earthquake catalogues. From this reappraisal of M _s and from a uniform re-evaluation of the associated macroseismic data, we derive a stable correlations between M _s and felt areas that can be used to assess the magnitude of historical, pre-instrumental, events for which only isoseismal radii (r _i ) and the associated intensities (I _i ) are available. We examined the conversion of surface-wave magnitude into moment magnitude, a conversion that presents some interesting problems for relatively small events for which the M _s -log(Mo) scaling changes. We conclude that the rate of moment release derived from events of M _s >4.0 is small, and that it should be associated with horizontal and vertical velocity rates of less than 1 mm/yr, too small vo be confirmed by GPS measurements over short periods of time so that can be used to constrain hazard assessment.     

THE SIGNS THAT INDICATE PHYSICAL DECAY IN TIBETAN CULTURE

At each and every moment the things of our universe are subject to change. The human body too,from the very moment it is born, begins the process that will ultimately lead to death.     

The Non-Sense of an Ending

This article contributes to the scholarship on Portuguese writer José Cardoso Pires as well as the study of the neorealist short story in Portugal. It analyzes the ending of the neorealist short story as a moment of utopian projection and draws a comparison with Cardoso Pires's short story endings. This study demonstrates that Cardoso Pires displaces the ending of the story as a moment of concordance to a moment of continuing crisis. The author suggests that through the design of problematic narratorial voices that advance ambiguity and irony, Cardoso Pires requires from the reader an engagement with the text that mirrors the writer's engagement in society.     

SEISMIC REHABILITATION OF BEAM-COLUMN JOINTS USING FRP LAMINATES

An innovative and practical technique for the seismic rehabilitation of beam-column joints using fiber reinforced polymers (FRP) is presented. The procedure is to upgrade the shear capacity of the joint and thus allow the ductile ftexural hinge to form in the beam. An experimental study is conducted in order to evaluate the performance of a full-scale reinforced concrete external beam-column joint from a moment resisting frame designed to earlier code then repaired using the proposed technique. The beam-column joint is tested under cyclic loading applied at the free end of the beam and axial column load. The suggested repair procedure was applied to the tested specimen. The composite laminate system proved to be effective in upgrading the shear capacity of the nonductile beam-column joint. Comparison between the behaviour of the specimen before and after the repair is presented. A design methodology for fibre jacketing to upgrade the shear capacity of existing beam-column joints in reinforced concrete moment resisting frames is proposed.     

No time like the present: Mindfulness,temporality and the therapeutics of kairos

While mindfulness is often portrayed as attention to the present moment, this article investigates its variable temporality in social practice. Using the example of mindfulness-based cognitive therapy (MBCT), designed to prevent relapse in recurring depression, mindfulness emerges as an ‘instantly effective’ intervention; as a discipline to be practised for one's future health; and as a perennial property of human attention, to be experienced in any present moment. Demonstrating that these entail different obligations and possibilities for mindfulness practitioners, I analyze the therapeutic timeliness of temporalization itself – arguing that there is a right time to live by certain notions of time.     

Civic Sacrament and Social Imaginaries in Transition: The Case of the South African Churches and the Truth and Reconciliation Commission

Abstract

This article reflects on a seminal moment within South Africa's Truth and Reconciliation Commission (TRC): the appearance of the African Initiated Churches (AICs) before the Commission in 1997. It demonstrates how this moment brought into relief divergent contestations of the public within South African Christianity in three ways: first, by situating the TRC within the liturgical performance of a reimagined South African nationality, making it a "civic sacrament" of reconciliation; second, by highlighting the formative role churches themselves played within this liturgy, deploying theological language to create a healed, secular body politic; third, by displaying the different social imaginary of the AICs—a social imaginary which interrupted the TRC's liturgical recreation of time and space, as well as challenging the historical relations between church and state in South Africa. The paper concludes with the question posed in this "interruption," a question that challenges the broader church with regard to fulfillment of the liturgy not in the secular nation-state, but in that City which is to come.     

Developing Representative Dual Loading Protocols for the Columns of Steel Special Moment Frames based on the Seismic Demands on These Members

The column members of steel moment frames undergo high axial forces as well as inelastic rotations during a severe seismic event. The boundaries of these simultaneous structural demands on the columns of special moment frames have been investigated in this research. Based on the results of this investigation, dual cyclic loading protocols have been developed that represent both axial force and lateral deformation demands. Contrary to other loading scenarios that have been implemented in previous studies on steel columns, the loading protocols developed in this study include simultaneous axial and lateral loading cycles with varying amplitudes. The level of axial forces and story drifts tolerated by the columns of some typical Special Moment Frames (SMFs) has been investigated through performing nonlinear dynamic analyses. These frames have been selected with several configurations and different number of stories. The results of the nonlinear dynamic analyses have been processed to assess cumulative and instantaneous seismic demands on the columns of the chosen typical frames. Subsequently, dual cyclic loading protocols have been developed such that exerting these loading protocols on individual steel columns can result in structural effects close to the general seismic demands assessed in this study. Two separate dual loading protocols have been introduced for Design Earthquake (DE) and Maximum Considered Earthquake (MCE) seismic intensity levels.     

“Neptune to the Common-wealth of England” (1652): the “Republican Britannia” and the continuity of interests

ABSTRACT

In the seventeenth century, John Kerrigan reminds us, “models of empire did not always turn on monarchy”. In this essay, I trace a vision of “Neptune’s empire” shared by royalists and republicans, binding English national interest to British overseas expansion. I take as my text a poem entitled “Neptune to the Common-wealth of England”, prefixed to Marchamont Nedham’s 1652 English translation of Mare Clausum (1635), John Selden’s response to Mare Liberum (1609) by Hugo Grotius. This minor work is read alongside some equally obscure and more familiar texts in order to point up the ways in which it speaks to persistent cultural and political interests. I trace the afterlife of this verse, its critical reception and its unique status as a fragment that exemplifies the crossover between colonial republic and imperial monarchy at a crucial moment in British history, a moment that, with Brexit, remains resonant.     

A Religious Response Veiled in a Presidential Address: A Theological Study of Bush's Speech on 20 september 2001

Abstract

The speech met the moment. The moment was like none experienced before. The speech transformed a presidency and rallied a nation. But what was this pivotal response to a critical moment in American history? Was it a call to a just and holy war? Is God really on the president's ‘side’? This article analyzes the speech delivered by President George W. Bush on 20 September 2001, to a joint session of Congress and to a troubled nation. It was a speech that depended on intimations of righteous indignation, a clear demarcation of good and evil, and a God who is not neutral. The article looks at the religious themes overtly and subtly stated in this speech, to discern what was actually a religious response to a global crisis that took the form of a presidential address.     

A Healed Wound Caused by a Flint Arrowhead in a Neolithic Human Innominate from the Trou Rosette (Furfooz,Belgium)

A new case is described here of a wound caused by a flint arrowhead in the neolithic period. The specimen comes from a collective burial excavated last century in the cave Trou Rosette (Belgium). It consists of a fragment of left adult ilium. The fragment of arrowhead is located in a rounded cavity which is open in the medial surface of the bone. The CT scan and the artefact study allow us to reconstruct the scenario of the accident. The arrow pierced the musculus gluteus of the individual prior fixing in the iliac blade. The arrow tip broke at the moment of impact; its tang broke either at the moment of impact or during attempts to extract the arrow.     

The moment when Peking fell to the Japanese: a “horizontal” perspective

ABSTRACT

Due to its equivocal character, the fall of Peking in 1937 was a historical moment that deserves a thorough revisit focusing on the city’s multifaceted structure. As a narrative strategy, “moment” aims at putting various spatial imageries of multiple events in a minimized temporal unit. This article focuses on two moments after the Marco Polo Bridge incident of July 7, 1937: July 29, when the Chinese troops withdrew from Peking, and August 8, when the Japanese troops entered the city. It reconstructs these historical scenarios by utilizing the reports of journalists, diary entries, and reminiscences, along with literary works to capture the moment of Peking’s fall. Using a “horizontal” perspective, this paper reveals Peking residents’ communal awareness and attempts to excavate nationalist elements from local experiences.     

Still a long way to go: gender and feminist geographies in France

Abstract

After recalling some specific elements of the French gender debate, such as French feminism, which threatens the war of the sexes and the fear of indifference, this article distinguishes three moments in the geography of gender in France. The first moment forgotten is the emergence of research on women’s work and urban mobility from a Marxist and feminist materialist perspective. The second, at odds with the first, is distinguished by an approach that is more cultural than social, an inspiration that borrows from the linguistic shift and postmodernism, and that may have its references among the English-speaking authors of radical geography and feminist geography. The last is a moment of consolidation and diversification of themes (masculinities, sexualities, the body) and approaches (queer geography, black feminism, intersectionality). The article then highlights two challenges. The first is to sustain gender by consolidating achievements, developing gender education and promoting gender mainstreaming in all aspects of research. The second is to create common ground and develop solidarity in a context of profound transformations in higher education and research.