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441.
This study presents an algorithm for measuring the time‐distance accessibility based on the flow data of actual transportation networks and examines resulting accessibility distributions. Specifically, we construct an extended graph of the transportation network to take into account not only the average speed and transfer time extracted from the data set but also various possible trajectories taken via transfers. Employing the modified Floyd algorithm which finds the shortest time distance, we compute the time‐distance accessibility of every bus stop in the Seoul bus system, which yields distinctive skew distributions. We then introduce a time‐distance cutoff to focus on effective connections and probe the emergent spatial distributions as the cutoff is varied. Revealed are the characteristic scales as well as spatial structures of the system. It is suggested that the time‐distance accessibility can serve as a significant measure to describe and predict the urban land use pattern. 相似文献
442.
A fundamental observation of 21st century cities is that they have become great centers of consumption. In this paper, we seek to understand the geographic variation in consumer behavior. Using Consumer Expenditure Survey (CE), we analyze how consumption differs across 21 major U.S. metropolitan areas, and the association between urban characteristics and consumption. We extend previous geographic analysis of consumption to include luxury goods that are socially visible (conspicuous consumption) and luxury goods that are relatively less visible (inconspicuous consumption). Our analysis shows that conspicuous consumption is more sensitive to an urban context than is inconspicuous consumption. 相似文献
443.
Jessica Pykett Rhys Jones Mark Whitehead Margo Huxley Kendra Strauss Nick Gill Kate McGeevor Lee Thompson Janet Newman 《Political Geography》2011,30(6):301-310
Contributions from political, health and economic geography, social policy and environmental policy studies are brought together here in order to examine the implications of a ‘libertarian paternalist’ political ‘project’ which seeks to react in pragmatic and ideological terms to the excesses and limitations of neoliberalism in liberal democratic contexts. The authors explore the contemporary relevance and historical antecedents of so-called ‘nudge’ tactics of governing, and draw attention to the political geographies encountered in this popular political programme in specific cases. 相似文献
444.
Lee D 《Journal of urban history》2011,37(6):933-951
This article explores the changes to urban political culture in Jakarta, Indonesia, from 1998 to the present. By tracing the contributions of youth activists, and middle-class university students in particular, to the production of the street as a political and public space, the author demonstrates to what extent the democratized post-Suharto era naturalizes the place of youth in nationalist politics. Central to this inquiry of youth identity formation is the elision of class and gender as analytical categories. Student movements in 1998 and after have relied on a specific masculine style that draws on both the authenticity of nationalist historical narratives and the street as the domain of the People, and in the process masks potentially contentious class and gender differences among progressive activists. 相似文献
445.
Esther J. Lee Ben Krause-Kyora Christoph Rinne Rebecca Schütt Melanie Harder Johannes Müller Nicole von Wurmb-Schwark Almut Nebel 《Archaeological and Anthropological Sciences》2014,6(2):199-204
Genetic studies of Neolithic groups in central Europe have provided insights into the demographic processes that have occurred during the initial transition to agriculture as well as in later Neolithic contexts. While distinct genetic patterns between indigenous hunter-gatherers and Neolithic farmers in Europe have been observed, it is still under discussion how the genetic diversity changed during the 5,000-year span of the Neolithic period. In order to investigate genetic patterns after the earliest farming communities, we carried out an ancient mitochondrial DNA (mtDNA) analysis of 34 individuals from Wittmar, Germany representing three different Neolithic farming groups (ca. 5,200–4,300 cal bc) including Rössen societies. Ancient DNA analysis was successful for six individuals associated with the Middle Neolithic Rössen and observed haplotypes were assigned to mtDNA haplogroups H5, HV0, U5, and K. Our results offer perspectives on the genetic composition of individuals associated with the Rössen culture at Wittmar and permit insights into genetic landscapes in central Europe at a time when regional groups first emerged during the Middle Neolithic. 相似文献
446.
447.
It is suggested with increasing frequency that rather than the industry standard of 1/4 inch mesh, zooarchaeologists use 1/8 inch or even 1/16 inch mesh to insure more complete recovery. These suggestions are based on the implicit assumption that the body size of a taxon and the probability that the remains of that taxon will be recovered are positively correlated. Size of skeletal specimens provides a more direct measure of recovery probability and accounts for the fact that not all skeletal elements in a body are the same size. Frequencies of eight kinds of rodent teeth representing three genera recovered from the Marmes archaeological site in southeastern Washington State, USA, correlate strongly with tooth size despite the use of 1/25 inch mesh screens. Shape of tooth types measured is insufficiently varied to reveal more than a general relationship between shape and recovery frequency. Choice of an appropriate screen mesh should consider the nature of a deposit, research goals, and cost efficiency. 相似文献
448.
Lee M. Panich Helga Afaghani Nicole Mathwich 《International Journal of Historical Archaeology》2014,18(3):467-488
Mission establishments in Alta California and elsewhere were home to complex, pluralistic communities in which native peoples actively but differentially negotiated aspects of colonialism through daily practice and the reinterpretation of identity. To explore these issues, we compare the archaeological evidence from two different indigenous dwellings at California’s Mission Santa Clara de Asís: an adobe barracks and a native-style thatched house. In particular, we consider possible differences between the dwellings’ inhabitants in terms of relative status, ethnolinguistic affiliation, and re-articulation of indigenous traditions. 相似文献
449.
Lee J. Bloch 《Archaeologies》2014,10(1):70-106
Recent decolonizing scholarship examines how Indigenous ways of knowing can transform archaeology. This article discusses community-based research undertaken with a Muskogee tribal town in North Florida, focusing on the archaeology of the Lake Jackson site (1100–1500 A.D.). Centering on the historical narratives circulated in this community illuminates gaps in the dominant archaeological discourse, or what Trouillot (Silencing the Past: Power and the Production of History, 1995) calls the silences of history. Examples such as iconographic representations of “genderless” moths and possibilities of “invisible” mound structures render the limits of colonial imagination visible. Archaeology can move beyond these constraints by bridging the center and margins of archaeological production. 相似文献
450.
A closed-form wave function analytic solution is presented in this article regarding the two-dimensional scattering and diffraction of a flexible wall sitting on a rigid shallow circular foundation embedded in an elastic half-space that is activated by a nearby anti-plane line source such as a blast caused by underground construction or mineral exploration or a near-field fault rupture, using similar methodology as the other paper in a series [Lee and Luo, 2013]. These wave propagation influences, although often treated as a transient process, may be simulated as linear combinations of steady-simple harmonic responses as studied in this article. Ground surface displacements spectra for wide-band of incident wave frequencies are calculated. Based on the spectra obtained, the dependence of near-field ground displacements are shown with respect to the rise-to-span ratio of foundation profile, frequency of incident waves, distance of source from the foundation, and mass ratios of various media (foundation-structure-soil). The screening effect of rigid foundation upon ground motions behind grazing incident waves is also presented. 相似文献