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1.
It has been pointed out that the static lateral response procedure for base isolated structures presented in IBC somewhat overestimates the seismic story force [Lashkari and Kircher, 1993; Constantinou et al., 1993]. In this article IBC equivalent static method for base shear distribution of seismic isolated structures is evaluated. For this purpose one-story to six-story building models are designed according to equivalent lateral response procedure for different elastomeric isolation systems. The results of equivalent lateral response procedure in parameters such as base shear and vertical distribution of base shear are compared with results obtained from dynamic nonlinear analysis and the efficiency and limitations of its application are investigated. In general, the results of equivalent lateral response procedure in base shears are acceptable within the scope of this procedure, but the proposed triangular distribution of base shear is somewhat conservative. So a new formulation for vertical distribution of base shear is proposed which results in a more realistic distribution of shear over the height of isolated buildings. The accuracy of the new formulation is examined by comparing the resulting responses obtained from this study with those calculated by nonlinear time history analysis. 相似文献
2.
This article is an examination of the cultural and economic tensions that arise in the formulation and implementation of media policy in the European Union. Through an analysis of the MEDIA 2007 program, the authors investigate how the priorities of cultural policy and media policy interact and conflict. EU policy goals from the mid‐2000s onwards have emphasized attention to the economic potential of the creative and cultural industries, which complicates the cultural potential of audiovisual media. MEDIA 2007 in particular demonstrates these tensions, as the design of this policy mechanism emphasized audiovisual media’s potential for European economic growth as a precondition for achieving cultural objectives. 相似文献
3.
Monica Green 《Children's Geographies》2014,12(2):189-204
Innovative curriculum frameworks that support children as active researchers and designers in everyday learning contexts remain unprioritized in school settings. Design literacies challenge and expand existing curriculum structures at a time when state and national curriculum privilege literacy and numeracy testing. Drawing on a broader ethnographic study that examined children's inhabitation of school food gardens through pedagogies of food production, ecology and design in three Australian primary schools [Green, M. 2011. “Place Matters: Pedagogies of Food, Ecology and Design.” Unpublished PhD, Monash University Churchill Victoria], this paper focuses on the design literacies or ‘design-centered pedagogy’ [McLaren, S. 2008. “Learning for Engagement: Lose the Ring-Fencing.” Paper presented at the Technology Education Research Conference: Exploring Technology Education: Solutions to Issues in a Globalised World, Gold Coast, Queensland] that supported children's engagement with everyday learning in one school community. Semi-structured and ‘walking interviews’ provide rich data for understanding the contributions of design and design processes in a garden-based curriculum. When linked to a framework of sustainability, design literacies can expand learning opportunities that deepen their connection to everyday places. 相似文献
4.
Mario Wiesendanger 《Journal of the history of the neurosciences》2013,22(1):42-57
This article addresses early work on partial recovery that followed small motor cortical lesions. Leyton and Sherrington (1917) studied the motor cortex in apes, hoping to learn more about the contralateral muscle representations. Then they placed small lesions within the precentral cortex, followed by a loss of the contralateral muscle twitches. The sudden loss remained for about one week, but recovery was observed and continued for weeks, up to a standstill. Sherrington and Graham Brown (1913) observed the same results in a serial, chronic experiment on a chimpanzee. The brain was sent to Monakow's Brain-Institute in Zurich for investigating the lesions and the degeneration pattern. Constantin von Monakow (1853–1930) had been a pioneer on recovery after acute lesions, coining the term “diaschisis.” During WWI, Graham Brown and Stewart (1916) studied a soldier in a British army hospital who suffered from a cerebral gunshot wound, localized in the sensorimotor cortex. Early and prolonged rehabilitation was successful. In 1950, Glees (1909–1999) and Cole (Oxford) placed a small motor-cortical lesion in macaque monkeys; for a few days, the monkeys had difficulties and were slow for the task. Daily training was resumed and recovery was accelerated by alimentary reward. Finally, Lashley (1890–1958) understood that handicapped patients “achieved their goal with variable means.” This demonstrated the value of active and prolonged rehabilitation, in addition to the (passive) recovery of function. 相似文献
5.
The Next Generation Attenuation (NGA) project has now published several new sets of empirical ground-motion prediction equations (GMPEs) for PGA, PGV, and response spectral ordinates. These models significantly advance the state-of-the-art empirical ground-motion modeling and account for many effects that have not been directly accounted for in the existing Iranian GMPEs. Assuming that the present strong-motion database in Iran is unlikely to drastically change in the near future, the question we ask in this study is: Can the NGA models be applied in Iran? In order to answer this question, the NGA models of Boore and Atkinson [2008], Campbell and Bozorgnia, [2008], and Chiou and Youngs [2008], which are shown to be representative of all NGA models, are compared with the Iranian strong-motion database. The database used in this study comprises 863 two-component horizontal acceleration time series recorded within 100 km of epicentral distances for 166 earthquakes in Iran with magnitudes ranging from 4.0–7.4. The comparisons are made using analyses of residuals. The analysis indicates that the NGA models may confidently be applied within the Iranian plateau. To provide more reliable constraint on finite-fault effects and nonlinear site response in the Iranian equations, it would be useful to drive new GMPEs based on a merger of the NGA and Iranian databases. 相似文献
6.
David W. Haig 《Alcheringa: An Australasian Journal of Paleontology》2018,42(1):37-66
Haig, D.W., October 2017. Permian (Kungurian) Foraminifera from Western Australia described by Walter Parr in 1942: reassessment and additions. Alcheringa 42, 37–66. ISSN 0311-5518.Exceptionally well-preserved siliceous agglutinated Foraminifera originally recorded by Walter Parr in 1942 are redescribed and illustrated by rendered multifocal reflected-light images. Significant new observations are made on wall texture and apertural morphology. The specimens are from the Quinnanie Shale and lower Wandagee Formation in the Merlinleigh Sub-basin of the Southern Carnarvon Basin, a marginal rift that splayed from the East Gondwana interior rift. During the Early Permian, a restricted shallow sea inundated the rift. The formations are part of sequence III of the Byro Group and belong within the Kungurian Stage (Cisuralian, Lower Permian). Of the 14 agglutinated species described by Parr, six are retained under their original names, viz., Hyperammina coleyi Parr, 1942, H. rudis Parr, 1942, Ammodiscus nitidus Parr, 1942, A. wandageeensis Parr, 1942, Tolypammina undulata Parr, 1942 and Reophax tricameratus Parr, 1942; one is transferred to a different species, viz., Thurammina texana Cushman &; Waters, 1928a; six are placed with other genera, viz., Thuramminoides pusilla (Parr, 1942), Teichertina teicherti (Parr, 1942), Sansabaina acicula (Parr, 1942), Tolypammina? adhaerens (Parr, 1942), Kunklerina subasper (Parr, 1942), Trochamminopsis subobtusa (Parr, 1942); and a species of Ammobaculites Cushman, 1910 identified by Parr is now left in open nomenclature. From Parr's material, eight additional species are described: two new species, viz., Hyperammina parri sp. nov. and Gaudryinopsis raggatti sp. nov.; rare representatives of Aaptotoichus quinnaniensis Haig, 2003; and very rare species of Lagenammina Rhumbler, 1911, Giraliarella Crespin, 1958, Glomospira Rzehak, 1885, Hormosinella Shchedrina, 1969, and Reophax Denys de Montfort, 1808, all of which are left in open nomenclature. Hyperammina rudis is the type species of Hyperamminita Crespin, 1958, a genus now considered a junior subjective synonym of Hyperammina Brady, 1878. Thuramminoides pusilla is considered a senior subjective synonym of T. sphaeroidalis Plummer, 1945, the type species of Thuramminoides Plummer, 1945. Imagery is presented confirming that the simple cylindrical canals through the wall of Teichertia teicherti differ from the branching canals in Crithionina rotundata Cushman, 1910, type species of Oryctoderma Loeblich &; Tappan, 1961. The collection contains some of the earliest representatives of the revised family Verneuilinoididae Suleymanov, 1973, herein elevated from subfamily rank, and considered to include Pennsylvanian–Cisuralian representatives of Mooreinella Cushman &; Waters, 1928a, Aaptotoichus Loeblich &; Tappan, 1982, Digitina Crespin &; Parr, 1941, Gaudryinopsis Podobina, 1975, Caronia Brönnimann, Whittaker &; Zaninetti, 1992 (=Palustrella Brönnimann, Whittaker &; Zaninetti, 1992) and Verneuilinoides Loeblich &; Tappan, 1949.David W. Haig [david. haig@uwa. edu. au] Centre for Energy Geoscience, School of Earth Sciences, University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Australia. 相似文献
7.
The August 30, 1986 (MW ?=?7.1) and May 30, 1990 (MW ?=?6.9) Vrancea intermediate-depth earthquakes, despite their almost similar magnitudes, have produced very different spectral contents as shown by the strong ground motions recorded in Bucharest and its surroundings. The differences can be attributed to different epicentral distances and to different values of the stress drop. The characteristics of the seismic ground motions recorded in Bucharest area in the 1986 and 1990 seismic events are discussed in the context of (a) the source characteristics of the two earthquakes and (b) the local soil conditions in Bucharest. Furthermore, an attempt is made to determine the soil factors S defined in EN 1998-1 for the Bucharest area, based on the strong ground motion dataset recorded during the two seismic events. 相似文献
8.
Denise Maior-Barron 《International Journal of Heritage Studies》2013,19(2):198-218
ABSTRACTThrough an analysis of the Petit Trianon, the historic house museum at the Château de Versailles associated with Marie Antoinette, the present article invites reflection over the topic of dissonant heritage (Tunbridge and Ashworth 1996) in connection with heritage commodification. The aim of this study is to heighten awareness of the difficulties which historic house legacies face in postmodern society through heritage analyses placed in the context of museology, art history and popular culture. This is achieved by building upon curatorial approaches and their reception by visitors, within an assessment of the 2008 restoration ethos of the Estate of Marie-Antoinette, and in parallel with a process of heritage commodification indirectly related to a twenty-first century Hollywood biopic of the last Queen of France - Sofia Coppola’s Marie Antoinette (2006). Competition surges between official and popular discourses of heritage (Groote and Haartsen 2008), all dealing, however, with the power of the same clichés engraved onto the French ‘collective memory’ (Halbwachs [1950]1980). This article highlights issues that arise when curatorial interpretation and visitor perceptions find themselves under the auspices of postmodern visual culture, thereby setting traps for heritage authenticity (Ashworth and Howard 1999). 相似文献
9.
Mabel Peacock 《Folklore》2013,124(2):199-202
Publii Ovidii Nasonis Fastorum Libri Sex. Edit with a trans. and commentary by Sir James George Frazer. 5 vols. Macmillan &; Co., 1929. 8¾" x 5?". Pp.xxxi + 357; iii + 512; iii +421; iii + 353; xiii + 212 (index) + 88 (ill.) + plans. £6 6s. Myths of the Origin of Fire. By Sir James George Frazer. Macmillan &; CO., 1930. 8¾" x 5?". Pp. 238. 12s. 6d. Man, God and Immortality. Thoughts on Human Progress. By Sir James George Frazer. Macmillan &; Co., 1927. 8¾" x 5?". Pp. xvi. + 437. 15s. 相似文献
10.
James E. McClellen III and Harold Dorn. Science and Technology in World History: An Introduction. Baltimore and London: Johns Hopkins Press, 1999.404 pages + illustrations + maps + graphs + bibliography + index. $55.00 (hardcover), $18.95 (paperback). Arnold Pacey. Meaning in Technology (Cambridge, Mass and London, England: MIT Press, 1999), pp. viii+264. 相似文献
11.
The M w7.9 Wenchuan earthquake produced a rich set of over 1,400 accelerograms, which helped us to better understand strong ground motions from such a large event. Using the abundant data, we investigated the characteristics of response spectral accelerations from this event. This study includes: the spatial distribution of spectral amplitudes at three periods selected to represent ground motions at short, short-middle, and middle-long period ranges; attenuations of response spectral accelerations at periods between 0.05 and 10 s; comparison between the observed ground motions and predicted motions from empirically based equations [Abrahamson and Silva,1997; Boore et al., 1997; Campbell, 1997; Huo, 1989] commonly used in America and China; comparison between the average response spectra at three distance bins and the Chinese seismic design spectra under major earthquake (with the recurrent interval of over 2,000 years);, the vertical-to-horizontal ratio of response spectra and its dependence on the rupture distance, period, and local site condition; and comparison between the fault-normal and fault-parallel component spectral accelerations within the rupture distance of 60 km. Based on these analyses, we finally drew some conclusions regarding the engineering characteristics of spectral accelerations from large earthquakes, such as Wenchuan of M w 7.9. 相似文献
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Fiona Ruth Cameron 《History & Anthropology》2014,25(2):208-226
This paper draws on Callon's [2005. “Why Virtualism Paves the Way to Political Impotence: A Reply to Daniel Miller's Critique of The Laws of the Markets.” Economic Sociology: European Electronic Newsletter 6 (2): 3–20] concept of agencement, together with Latour's [1987. Science in Action: How to Follow Scientists and Engineers Through Society. Cambridge, MA: Harvard University Press] concept of immutable combinable mobiles to illustrate how Henry Devenish Skinner, ethnologist and anthropology lecturer at the Otago Museum and University sought to form and shape Māori identity, history, culture and populations as subjects of liberal government. It does this through an exploration of Skinner's fieldwork and collecting practices. The paper suggests that forms of analysis mediated through the American History School, and the culture area concept were deployed during the emergence of anthropology as a discipline in New Zealand (between 1919 and 1940) to produce ethnographic authority that then acted as a point of connection between scientific networks and the colonial administrative field. 相似文献
14.
Gregory N. Evon 《亚洲研究评论》2011,35(2):253-262
Despite the vast influence of “Chinese culture” on Korea, the Chos[obreve]n dynasty (1392–1910) was a distinct cultural sphere governed by its own internal logic that centred on the aristocracy. Over the past twenty years, the importance of this fact has received emphasis in detailed studies by Deuchler (1992), Palais (1996) and Duncan (2000). The recent works by Hwang, Park and Kim that are the subject of this essay constitute a triptych of studies that further illuminate theimplications of social status in Chos[obreve]n and show how South Korea's transformation over the past five decades represents a radical deviation from the defining characteristics of its Confucian past. 相似文献
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Israel Finkelstein 《巴勒斯坦考察季》2020,152(2):82-93
ABSTRACT In this article, I review three recent articles. In the first, Asscher and Boaretto (2018. ‘Absolute time ranges in the plateau of the Late Bronze to Iron Age transition and the appearance of Bichrome pottery in Canaan, Southern Levant’, Radiocarbon 60, 1–25) suggest that the Late Bronze/Iron I transition occurred in neighboring sites a century and more apart. In the second, Faust and Sapir (2018. ‘The “Governor's Residency” at Tel ?Eton, the United Monarchy and the impact of the old-house effect on large-scale archaeological reconstructions’, Radiocarbon 60, 801–820.) date the construction of a solid building at Tel ?Eton to the tenth century bce and interpret this as validation for the historicity of the United Monarchy of ancient Israel. In the third, Garfinkel et al. (2019a. ‘Lachish fortifications and state formation in the Biblical kingdom of Judah in light of radiometric datings’, Radiocarbon 61, 1–18) announce the discovery of a city-wall belonging to Level V at Lachish, and affiliate it with the building operations of King Rehoboam of Judah, described in 2 Chronicles. Scrutiny of the methods and facts dismisses all three theories. 相似文献
17.
Lindsay Stephens Karen Spalding Henna Aslam Helen Scott Sue Ruddick Nancy L. Young 《Children's Geographies》2017,15(5):583-599
Accessible built environments are a critical component of Canada’s commitment to disabled children’s ‘right to enjoy full and decent lives’ [United Nations Convention on the Rights of the Child. 1989. Convention on the Rights of the Child. New York.] . Although valid, reliable research data about the accessibility of built environments are key to developing related policies, these data currently do not exist. To begin to redress this gap, we conducted a case study series followed by a survey to determine the accessibility of schools, homes and neighbourhoods directly from disabled children (The ScHaN Project). To present a concise summary of the findings that can inform equitable, evidence-based policies, we developed a scoring system for their homes, schools and neighbourhoods. Although our findings illustrate that eliciting and interpreting data from these children were complex undertakings, it is clear that none of these central environments met Canada’s obligation to enhance equity by enabling their access, inclusion and participation. 相似文献
18.
P. G. MANNING 《Archaeometry》1975,17(2):233-235
It is shown, from comparisons with the optical absorption of minerals, that the black and grey colours of pottery can arise from Fe2+ Fe3+ and Fe2+ Ti4+ charge-transfer (or electron-hopping) processes, the cations being located at the centres of adjacent edge-sharing octahedra. 相似文献
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Lead-rubber isolators represent a valid and economic solution for the seismic isolation of bridge structures and modern manufacturing techniques make available large devices. Velocity effects on small to medium-scale isolators have been discussed by several authors (e.g., Clark et al., 1997; Thompson et al., 2000) as well as included in reports of experimental programs (e.g., CERF, 1999). Only recently, however, the behavior of large devices was validated under full-scale displacements, loads, and velocities. In this article, results obtained from an experimental investigation on the effects of axial load and strain rate on the performance of a full-scale lead-core elastomeric bearing for bridge applications, are reported. The bearing response was analyzed with particular attention to the variation of critical performance characteristics in order to produce a set of information that could be implemented in a physically motivated numerical model. The results, in line with additional tests performed on similar full-scale bearings at the Caltrans SRMD Testing Facility at the University of California San Diego, indicate a moderate effect of the applied vertical load but a significant effect of the strain rate and cycling on all the significant response parameters. This information should be taken into account by designers, particularly when high component of velocities are associated with the expected seismic motion. A simplified numerical model is proposed for the assessment of lead-rubber bearing performance. 相似文献