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1.
In the past, probabilistic seismic hazard analysis (PSHA) has been performed by researchers to assess the level of seismic hazard in Kuala Lumpur, Malaysia and its vicinity. However, the peak ground acceleration (PGA) values obtained are high due to unsuitable ground motion prediction equation (GMPE). This article is divided into two parts: development of a suitable GMPE and the PSHA for this region. Two main sources have been identified as the contributors to earthquake hazard in Peninsular Malaysia, namely the Sumatra strike-slip fault and Sumatra subduction zone. For the subduction zone, nine recorded large earthquake events are analyzed and regression analysis is performed to obtain a new GMPE for this region. In performing PSHA, the strike-slip fault is divided into 14 zones based on the individual fault segments, while the subduction is divided into 4 zones. Historical earthquakes of this region are collected, processed, and segregated according to the zones. PSHA has been conducted by modeling the source seismicity using Gutenberg-Richter and characteristic earthquake models. The developed GMPE has been used along with other attenuation models: Megawati and Pan [2010] Megawati, K. and Pan, T. C. 2010. Ground-motion attenuation relationship for the Sumatran megathrust earthquakes. Earthquake Engineering and Structural Dynamics, 39: 827845. [Web of Science ®] [Google Scholar] and component attenuation model (CAM) by Balendra et al. [2002] Balendra, T., Lam, N. T. K., Wilson, J. L. and Kong, K. H. 2002. Analysis of long-distance earthquake tremors and base shear demand for buildings in Singapore. Engineering Structures, 24: 99108. [Crossref], [Web of Science ®] [Google Scholar] for subduction; and Sadigh et al. [1997] Sadigh, K., Chang, C. Y., Egan, J. A., Makdisi, J. and Youngs, R. R. 1997. Attenuation relationships for shallow crustal earthquakes based on California strong motion data. Seismological Research Letters, 68: 180189. [Crossref] [Google Scholar] and CAM for strike-slip fault. The peak ground accelerations in Kuala Lumpur for 10% and 2% probability of exceedances in 50 years are found to be 16.5 gal and 23.4 gal, respectively. From deaggregation analysis, the main contributor for the 10% probability of exceedance in 50 years is found to be a 7.5 Mw earthquake at 300 km, originating from the strike slip fault. Finally, the design response spectrum for Kuala Lumpur is developed for rock sites, which would be amplified further by local soil profile.  相似文献   

2.
The Seismic Hazard Assessment (SHA) based on probabilistic approach has been carried out for the entire seismically active NW Himalayan Fold and Thrust Belt in Pakistan. Additional information in the form of earthquake catalog, delineation of 41 active faults in a structural map, their relationship to the seismicity, and establishment of seismotectonic zones has also been undertaken.

From the distribution of the 813 events within the study area, it appears that seismicity (≥4.0 Mw) is associated with both surface and blind faults. The clustering of events in specific parts along the surface faults shows that some fault segments, especially in the hinterland zone, are more active. In parts of the active deformational front, like the Salt Range, southern Potwar and Bannu, lesser seismic activity (≥4.0 Mw) could be due to damping effect of the thick Precambrian salt.

A majority of the earthquakes (86%) range in magnitude from 4.0 to 4.9 Mw, followed by 107 events (13%) ranging from 5.0 to 5.9 Mw. The remaining 1% range from 6.0 to 6.7 Mw. There is a predominance of shallow seismicity (<50 km focal depth). Larger magnitudes events are more in the hinterland zone. In contrast, based on distribution of 683 (≥4.0 Mw) events, a deeper level of seismicity (50 to 200 km) prevails especially in the adjoining Hindukush Range of Afghanistan.

Four seismotectonic zones have been established in the area. The b value is highest for the Peshawar-Hazara Seismic Zone (PHSZ) at 1.27, followed by 1.12 for the Surghar-Kurram Seismic Zone (SKSZ). The Swat-Astor Seismic Zone (SASZ) and Kohat-Potwar-Salt Range Seismic Zone (KPSZ) have b values of 0.99 and 1.03, respectively, thereby indicating the occurrence of more events of relatively higher magnitude as compared to the other two zones. The mean activity rate of the earthquakes (λ) ranges from 4.26 to 1.73. In decreasing order, the values are 4.26, 2.62, 2.07, and 1.73 for PHSZ, SASZ, KPSZ, and SKSZ, respectively. Using four regression relationships, the maximum potential magnitude (m1) has been determined for the 4 Quaternary faults. The highest value within each seismic zone represents its m1. Our calculations show that m1 is 7.8 in the hinterland (SASZ and PHSZ) and 7.4 in the foreland part (KPSZ and SKSZ).

SHA, incorporating probabilistic approach, has been undertaken at 10 sites, along with disaggregation at the assigned amplitude of 0.2g. Pakistan does not have an attenuation equation of its own. The two equations of Ambraseys et al. (1996) Ambraseys, N. N., Simpson, K. A. and Bommer, J. J. 1996. Prediction of horizontal response spectra in Europe. Earthquake Engineering and Structural Dynamics, 25: 371400. [Crossref], [Web of Science ®] [Google Scholar] and Boore et al. (1997) Boore, D. M., Joyner, W. B. and Fumal, T. E. 1997. Equations from estimating horizontal response spectra and peak acceleration from western North American earthquakes: a summary of recent work. Seismological Research Letters, 68: 128153. [Crossref] [Google Scholar] have been used and the results obtained using the equation of Boore et al. (1997) Boore, D. M., Joyner, W. B. and Fumal, T. E. 1997. Equations from estimating horizontal response spectra and peak acceleration from western North American earthquakes: a summary of recent work. Seismological Research Letters, 68: 128153. [Crossref] [Google Scholar] have been preferred. In the Probabilistic seismic hazard assessment (PSHA), the PGA values with 10% probability of exceedance in the 50 years, i.e., the return period of 475, have been determined using the EZ-FRISK (6.2 beta version) software. Best-estimated seismic hazard parameters (λ, m1, m0, and the β value) of the four seismic zones were used as the input. Results were generated in the form of total hazard curves. Values obtained range from 0.08g (for Bannu) to 0.21g (for Malakand and Kohat). For the other seven sites they are: Astore (0.082g), Kaghan (0.12g), Muzaffarabad (0.13g), Islamabad and Peshawar (0.15g), Talagang (0.16g), and Mangla (0.18g). High population density and more poorly constructed structures in Rawalpindi (twin city of Islamabad) and Peshawar make them more hazardous.  相似文献   

3.
This article is the first of two companion articles that evaluate the seismic hazard in northwestern Pakistan. The area, located at the western edge of the Himalayas, has numerous active faults including the Main Boundary Thrust (MBT) and Main Mantle Thrust (MMT). This article describes the methodology used to perform regional deterministic and probabilistic seismic hazard analyses. Here, seismic sources were defined from 32 identified faults while prior studies have been based on diffuse seismicity and areal source zones. Fault parameters were selected using available data and empirical correlations for faults elsewhere. Recurrence relations were constructed for all discrete faults based on both historical and instrumented seismicity in addition to geologic evidence. Due to lack of region specific attenuation relationships, four plate boundary attenuation relations from the Next Generation Attenuation of Ground Motions Project [Abrahamson et al., 2008 Abrahamson, N., Atkinson, G., Boore, D., Bozorgnia, Y., Campbell, K., Chiou, B., Idriss, I. M., Silva, W. and Youngs, R. 2008. Comparisons of the NGA ground-motion relations. Earthquake Spectra, 24(1): 4566. [Crossref], [Web of Science ®] [Google Scholar]] were employed to predict ground motions. Predicted ground motion parameters are compared to measurements from the recent 2005 Kashmir earthquake. In the companion article, the methodology developed and evaluated here is used to conduct deterministic and probabilistic seismic hazard analyses for the entire study region.  相似文献   

4.
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] Boore, D. M. and Atkinson, G. M. 2008. Ground-motion prediction equations for the average horizontal 99 component of PGA, PGV, and 5%-damped PSA at spectral periods between 0.01 s and 10.0 s. Earthquake Spectra, Earthquake Engineering Research Institute, 24(1): 99138. [Crossref], [Web of Science ®] [Google Scholar], Campbell and Bozorgnia, [2008] Campbell, K. W. and Bozorgnia, Y. 2008. NGA ground motion model for the geometric mean horizontal 139 component of PGA, PGV, PGD and 5% damped linear elastic response spectra for periods ranging from 0.01 to 10 s. Earthquake Spectra, Earthquake Engineering Research Institute, 24(1): 139172. [Crossref], [Web of Science ®] [Google Scholar], and Chiou and Youngs [2008] Chiou, B. and Youngs, R. R. 2008. An NGA model for the average horizontal component of peak 173 ground motion and response spectra. Earthquake Spectra, Earthquake Engineering Research Institute, 24(1): 173216. [Crossref], [Web of Science ®] [Google Scholar], 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   

5.
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 Abrahamson, N. N. and Silva, W. J. 1997. Empirical response spectral attenuation relations for shallow crustal earthquakes. Seismological Ressearch Letters, 68: 923. [Crossref] [Google Scholar]; Boore et al., 1997 Boore, D. M., Joyner, W. B. and Fumal, T. E. 1997. Equations for estimating horizontal response spectra and peak acceleration from Western North America earthquakes: a summary of recent work. Seismological Ressearch Letters, 68: 128153. [Crossref] [Google Scholar]; Campbell, 1997 Campbell, K. W. 1997. Empirical near-source attenuation relationships for horizontal and vertical components of peak ground acceleration, peak ground velocity, and pseudo-absolute acceleration response spectra. Seismological Ressearch Letters, 68: 154179. [Crossref] [Google Scholar]; Huo, 1989 Huo, J. R. Ph.D. 1989. Study on the attenuation laws of strong earthquake ground motion near the source, Dissertation, Institute of Engineering Mechanics, China Earthquake Administration. (In Chinese) [Google Scholar]] 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   

6.
7.
Two new species of Nevania Zhang & Rasnitsyn 2007 Zhang, H.C. & Rasnitsyn, A.P., 2007. Nevaniinae subfam. n., a new fossil taxon (Insecta: Hymenoptera: Evanioidea: Praeaulacidae) from the Middle Jurassic of Daohugou in Inner Mongolia, China. Insect Systematics & Evolution 38, 149166.[Crossref], [Web of Science ®] [Google Scholar], Nevania perbella sp. nov. and Nevania aspectabilis sp. nov., are described and illustrated. They are assigned to Nevania based on their unique morphological characters: forewing venation complete; 2A complete; metasoma with first and second segments long and tube-like. A key to the known species of Nevania is provided. These fossils, collected from the Jiulongshan Formation (Middle Jurassic) of Daohugou in Inner Mongolia, China, broaden the known diversity of this genus in mid-Mesozoic ecosystems.  相似文献   

8.
This paper aims to show how young people in former East Germany respond to the globalising processes that are part of the transformation of their society from a state-socialist to a capitalist one. It focuses particularly on the differential ways in which young people perform their identities as global/local subjects through the uses that they make of urban space. While emphasising the agency of young people, the paper seeks to examine the dialectic between globalising forces that are largely beyond their control and the negotiation of these forces in everyday practices of identity-formation. Conceptually, the paper draws particularly on the work of Beck (2000) Beck, U. 2000. “What is Globalization?”. Cambridge and Oxford: Polity Press.  [Google Scholar], Beck and Gernsheim (2002) Beck, U. and Beck-Gernsheim, E. 2002. Individualization. Institutionalized Individualism and its Social and Political Consequences, London: Sage.  [Google Scholar] and Giddens (1994) Giddens, A. 1994. Modernity and Self-Identity. Self and Society in the Late Modern Age, Cambridge: Polity Press.  [Google Scholar] in order to conceptualise the connections between globalisation and individualisation, as well as on feminist and recent geographical work on performativity (Butler, 1990 Butler, J. 1990. Gender Trouble. Feminism and the Subversion of Identity, London and New York: Routledge.  [Google Scholar], 1993 Butler, J. 1993. Bodies that Matter. On the Discursive Limits of ‘Sex’, London and New York: Routledge.  [Google Scholar]; Rose, 1996 Rose, G. 1996. “As if the mirrors had bled: masculine dwelling, masculine theory and feminist masquerades”. In BodySpace: Destabilising Geographies of Gender and Sexuality, Edited by: Duncan, N. 5674. London and New York: Routledge.  [Google Scholar]; Gregson and Rose, 2000 Gregson, N. and Rose, G. 2000. ‘Taking Butler elsewhere: performativities, spatialities and subjectivities’. Environment and Planning D: Society and Space, 18(4): 433452. [Crossref], [Web of Science ®] [Google Scholar]; Thrift, 1996 Thrift, N. 1996. Spatial Formations, London: Sage.  [Google Scholar]; Dewsbury, 2000 Dewsbury, J.-D. 2000. ‘Performativity and the event: enacting a philosophy of difference’. Environment and Planning D: Society and Space, 18(4): 473496. [Crossref], [Web of Science ®] [Google Scholar]; Dewsbury and Naylor, 2002 Dewsbury, J.-D. and Naylor, S. 2002. Practicing geographical knowledge: fields, bodies and dissemination. Area, 34(3): 253260.  [Google Scholar]) in order to gain an embodied understanding of the ways in which individuals construct themselves as global/local subjects.  相似文献   

9.
Bullying is an internationally pervasive problem that impacts significantly on the behaviour, health and wellbeing of children. Drawing on ideas developed in both the abundant psychology literature, and the landmark study by Percy-Smith and Matthews Tyrannical Spaces (2001) Percy-Smith, B. and Matthews, H. 2001. Tyrannical spaces: Young people, bullying and urban neighbourhoods. Local Environment, 6(1): 4963. [Taylor & Francis Online] [Google Scholar], this paper examines the psychosocial dynamics of bullying as they interrelate with various environments. The key groups involved in bullying are considered particularly with respect to their spatial rituals, actions and interactions. In the absence of sustained geographical research in this field, some broad directions for future geographies of bullying are suggested as the basis for future inquiry. Some initial indications are provided as to how these might involve, and connect to, existing disciplinary interests in geographies of exclusion, moral and emotional geographies.  相似文献   

10.
Exaeretodon riograndensis Abdala, Barberena, & Dornelles, 2002 Abdala, F., Barberena, M.C. and Dornelles, J.E.F. 2002. A new species of the traversodontid cynodont Exaeretodon from the Santa Maria Formation (Middle/Late Triassic) of Southern Brazil. Journal of Vertebrate Paleontology, 22: 313325. [Taylor & Francis Online], [Web of Science ®] [Google Scholar] is the most abundant traversodontid preserved in the basal Santa Maria 2 Sequence (Hyperodapedon Assemblage Zone), southern Brazil and is closely related to Exaeretodon argentinus Cabrera, 1943 Cabrera, A. 1943. El primer hallazgo de terápsidos en la Argentina. Notas del Museo de La Plata, Paleontología, 8: 317331.  [Google Scholar] from the Ischigualasto Formation, Argentina. Previous anatomical studies of E. riograndensis have focused mainly on cranial material and little is known about the morphology of its lower dentition or postdentary bones. We describe the first fairly complete postdentary series of the mandible of E. riograndensis and provide additional information on its lower dentition. The postdentary bones of E. riograndensis include a complex coronoid, an angular with a delicate reflected lamina and a stout retroarticular process of the articular, contrasting with the morphology reconstructed for Argentinean specimens, which possess a small retroarticular process. Apart from that, the postdentary bones do not differ significantly from those known for E. argentinus, a fact expected due to the great similarity between other skeletal features of these species. Furthermore, the lower postcanines of E. riograndensis have virtually the same structure as those of E. argentinus, with an approximate quadrangular shape in occlusal view. Moreover, the transverse cusp row is placed anteriorly and comprises a lingual and a buccal cusp, and the occlusal basin delimited by the four main cusps is relatively deep. The new material does not add any taxonomically diagnostic features to E. riograndensis. However, the fossils greatly improve our understanding of the anatomy of the Brazilian species.  相似文献   

11.
This paper provides regional GDP estimates for the 24 Swedish regions (NUTS-3) for the benchmark year 1571 and for 11 ten-year benchmarks for the period 1750–1850. The 1571 estimates are based on tax sources and agricultural statistics. The 1750–1850 estimates are produced following the widely used methodology by Geary and Stark (2002 Geary, F., and T. Stark. 2002. Examining Ireland's Post-Famine Economic Growth Performance. Economic Journal 112(482):919935. doi:10.1111/1468-0297.00064.[Crossref], [Web of Science ®] [Google Scholar]): labour force figures from population censuses at regional level are used to allocate to regions the national estimates of agriculture, industry and services while wages are used to correct for productivity differentials. By connecting our series to the existing ones by Enflo, Henning, and Schön (2014 Enflo, K., M. Henning, and L. Schön. 2014. Swedish Regional GDP 1855–2000: Estimations and General Trends in the Swedish Regional System. Research in Economic History 30:4789.[Crossref] [Google Scholar]) for the period 1860–2010, we are able to produce the longest set of regional GDP series to date for any single country.  相似文献   

12.
When analysing party government behaviour, attempts to detect opportunistic policy making (designed to benefit the incumbent) usually focus on electoral law and changes designed to advantage the ruling party in terms of potential votes. However, as Stein Rokkan (1966 Rokkan, S. 1966. “Norway: Numerical Democracy and Corporate Pluralism”. In Political Oppositions in Western Democracies, Edited by: Dahl, R. A. New Haven: Yale University Press.  [Google Scholar], 105) noted: ‘Votes count, but resources decide’. A laissez faire approach to regulating government advertising has allowed the federal government to spend over A$1 billion on advertising over 10 years despite ongoing accusations of misuse for partisan benefit and attempts by multiple actors to tighten the rules. This article, therefore, uses government advertising regulation as a case study of policy making ‘in a cold climate’ where, instead of seeking change, the ruling party benefits from existing rules and is extremely reluctant to change them. Using a hypothesis proposed by Richard S. Katz (2005) Katz, R. S. 2005. “Why Are There So Many (Or So Few) Electoral Reforms?”. In The Politics of Electoral Systems, Edited by: Gallagher, M. and Mitchell, P. Oxford: Oxford University Press. [Crossref] [Google Scholar], it considers what (if anything) might propel policy reform in such a situation.  相似文献   

13.
As participatory methodologies gain popularity and are increasingly adapted to carry out research with ‘children’, I return to the methodological question: is doing research with children different from doing research with adults? (Punch, 2000 Punch, S. 2000. Research with children the same or different from research with adults?. Childhood, 9(3): 321341. [Web of Science ®] [Google Scholar]). As a participatory researcher, I raise concerns around methods designed for ‘children’ that stamp a ‘how-to-research’ label upon a diverse group of individuals prior to entering the research space. Rather than continue the well-worn debate around the incompetent/competent/powerless child versus the competent all-powerful adult, I attempt a different approach that aims to dissolve this dichotomy. I draw on hybrid theories of identities (Benhabib, 1992 Benhabib, S. 1992. Situating the Self, New York: Routledge.  [Google Scholar]; Butler, 1990 Butler, J. 1990. Gender Trouble: Feminism and the Subversion of Identity, London: Routledge.  [Google Scholar]; Adams, 2006 Adams, M. 2006. Hybridising habitus and reflexivity: towards an understanding of contemporary identity?. Sociology, 40(3): 511528. [Crossref] [Google Scholar]), that recognise identities as multiple and fluid, and present social identities as unhelpful guides in designing participatory methods, principally the mythical notion of the competent all-powerful adult (Lee, 2001 Lee, N. 2001. Childhood and Society: Growing Up in an Age of Uncertainty, Milton Keynes: OUP.  [Google Scholar]). I present the case that pre-labelling participants contradicts the bottom-up approach of participatory methodologies, particularly when Participation is understood as spatial practice (Kesby, 1999 Kesby, M. 1999. Beyond the Representational Impasse? Retheorising Power, Empowerment and Spatiality, mimeo [Google Scholar]; Cornwall, 2000), and participants are invited into a research space, where identities are performed (Thrift, 2000) and are, therefore, something we ‘do’ not ‘have’ (Butler, 1990 Butler, J. 1990. Gender Trouble: Feminism and the Subversion of Identity, London: Routledge.  [Google Scholar]).  相似文献   

14.
The first case of synesthesia was reported in 1812 (Jewanski, Day, & Ward, 2009 Jewanski, J, Day, SA and Ward, J. 2009. A colorful albino: The first documented case of synesthesia, by Georg Tobias Ludwig Sachs in 1812. Journal of the History of the Neurosciences, 18: 293303. [Taylor & Francis Online], [Web of Science ®] [Google Scholar]). However, it took almost seven decades before the idea of synesthesia entered the mainstream of science and, subsequently, art. There are no known new cases described between 1812 and 1848, but in the following three decades there are at least 11 reported cases of synesthesia and many reviews of these cases. This comes at an important period in the history of the neurosciences, and for sensory physiology in particular. However, the literature that describes synesthesia during this period is largely unknown to contemporary researchers and historians. The aim of this review is to discuss the reports of synesthesia during this period, providing translations of some key passages, and to place these reports within the contextual framework of nineteenth-century neuroscience.  相似文献   

15.
16.
Abstract

Recent health scares such as BSE have contributed to the growth of local farmers' markets and consumption of organics sourced globally (Morgan et al., 2006 Morgan, K., Marsden, T. and Murdoch, J. 2006. Worlds of Food: Place, Power and Provenance in the Food Chain, Oxford: Oxford University Press.  [Google Scholar]). Yet a central question about alternative agro-food networks (AAFNs) is whether they supply undemocratic diets chiefly for elites (Goodman, 2004 Goodman, D. 2004. Rural Europe redux? Reflections on alternative agro-food networks and paradigm change. Sociologia Ruralis, 44(1): 316. [Crossref], [Web of Science ®] [Google Scholar]). This is relevant to government campaigns such as ‘Generation Scotland’ and ‘5 A Day’ in the UK, and ‘Food Pyramids’ in the US, which promote better diets for their entire populations. Firefighting is risky work and because firefighters inhabit middle rungs on the socioeconomic ladder, and food is seen as key to morale and fitness, they are suitable consumers to query on food and risk. This firefighter survey presents evidence that alternative foods are gaining value in the UK and US study areas used here. Though Newcastle, UK, lags behind Seattle, US, on a continuum from conventional to alternative food systems, consumption of alternative foods by Newcastle firefighters is greater than that of workers surveyed in Edinburgh a decade before (Tregear, 1994 Tregear, A., Dent, J. B. and McGregor, M. J. 1994. The demand for organically-grown produce. British Food Journal, 96(4): 2125. [Crossref] [Google Scholar]), implying that northern UK diets could turn greener if availability and prices improve. Reasons why organic preference seems stronger among firefighters in northwestern US, than in northern UK where local preference appears stronger, are discussed, as well as theorisation of consumer response to a variety of risks over time.  相似文献   

17.
Seminal work by Goldin and Margo (1992 Goldin, C. D. and R. A. Margo.1992. The great compression: The wage structure in the United States at mid-century. Quarterly Journal of Economics 107 (1):134. https://doi.org/10.2307/2118322.[Crossref], [Web of Science ®] [Google Scholar]) used the first available microdata samples of the United States decennial census to document the narrowing of the wage structure between 1940 and 1960, a pattern they refer to as the “Great Compression.” We revisit their findings using newly available, substantially enlarged samples of the decennial censuses covering this period. Our findings largely replicate the patterns initially reported by Goldin and Margo. However, differences emerge when estimating rates of return to education and experience for specific groups and in a decomposition exercise. A second goal is to indicate directions for future research that might benefit from the use of the complete count census data.  相似文献   

18.
While it has been argued that conventional methodological resources are incapable of effectively representing ‘everyday social practice’ (see Latham 2003 Latham, A. 2003. Research, performance, and doing human geography: Some reflections on the diary-photograph, diary-interview method. Environment and Planning A, 35: 19932017. [Crossref], [Web of Science ®] [Google Scholar], Environment and Planning A, 35, 1993), this paper posits that a consideration of the ‘where’ of methodology can go some way to taking social practices seriously. Drawing on research into young people's spatial practices, conventional interview techniques were adopted in a range of different sites: a classroom, a school store-cupboard, and in teenage ‘hang outs’. Through discussion of these emplaced techniques, the paper demonstrates the difference the where of method makes to research. It will argue that, if harnessed appropriately, emplaced methodology can enhance social science's capacity to access the range of intelligences that constitute everyday social practice.  相似文献   

19.
ABSTRACT

Through 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 Tunbridge, J. E., and G. J. Ashworth. 1996. Dissonant Heritage: The Management of the past as a Resource in Conflict. Chichester: John Wiley & Sons. [Google Scholar]) 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 Alderman, D. H. 2008. “Place, Naming and the Interpretation of Cultural Landscapes.” 195–213; Groote, P. and T. Haartsen “The Communication of Heritage: Creating Place Identities.” 181–194; Harvey, D. C. “The History of Heritage.” 19–36; McLean, F. “Museums and the Representation of Identity.” 283–297; Smith, L. “Heritage, Gender and Identity.” 159–178. In The Ashgate Research Companion to Heritage & Identity, edited by B. Graham and P. J. Howard. Aldershot: Ashgate. [Google Scholar]), all dealing, however, with the power of the same clichés engraved onto the French ‘collective memory’ (Halbwachs [1950]1980 Halbwachs, M. (1950) 1980. The Collective Memory. New York: Harper & Row. [Google Scholar]). 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 Ashworth, G. J., and P. J. Howard. 1999. European Heritage Planning and Management. Exeter: Intellect. [Google Scholar]).  相似文献   

20.
Wei, D.D., Béthoux, O., Guo, Y.X., Schneider, J.W. & Ren D., 2013. New data on the singularly rare ‘cockroachoids’ from Xiaheyan (Pennsylvanian; Ningxia, China). Alcheringa 37, 547–557. ISSN 0311-5518.

Additional material of stem-Dictyoptera, or ‘cockroachoids’, is described from the Early Pennsylvanian Xiaheyan locality (Zhongwei City, Ningxia Hui Autonomous Region, China). New specimens belonging to Qilianiblatta namurensis Zhang et al., 2012 Zhang, Z., Schneider, J.W. & Hong, Y., 2012. The most ancient roach (Blattida): A new genus and species from the earliest Late Carboniferous (Namurian) of China, with discussion on the phylomorphogeny of early blattids. Journal of Systematic Palaeontology 11, 2740.[Taylor & Francis Online], [Web of Science ®] [Google Scholar] are described, as are several specimens belonging to a new species (viz., Kinklidoblatta youhei sp. nov.). Three further specimens might represent additional species, to be better documented before they could be formally named. The occurrence of a ‘vannus’ in forewings of K. youhei sp. nov. is demonstrated, and discussed in the light of data on extant Dictyoptera. The low abundance and comparatively low diversity of the group in the locality is challenging, and might be a consequence of taphonomic bias.

Dandan Wei [weidandanok@126.com], Yinxia Guo [kuaile422@163.com] and Dong Ren [rendong@mail.cnu.edu.cn], College of Life Science, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing 100048, PR China; Olivier Béthoux [obethoux@mnhn.fr], CR2P UMR 7207, MNHN, UPMC, CNRS, eight rue Buffon, CP38, F-75005, Paris, France; Jörg W. Schneider [joerg.schneider@geo.tu-freiberg.de], Technical University Bergakademie Freiberg, Institute of Geology, Department of Palaeontology, Bernhard-von-Cotta Str. 2, D-09596 Freiberg, Germany. Received 22.3.2013; revised 17.5.2013; accepted 23.5.2013.  相似文献   

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