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1.
This paper analyzes the accuracy of count data estimated by the point‐in‐polygon method. A point‐in‐polygon interpolation model is proposed, based on a stochastic distribution of points and the target zone, in order to represent a variety of situations. The accuracy of estimates is numerically investigated in relation to the size of the target zone and the distribution of points, and the optimal location of representative points is discussed. The major findings of this paper are as follows: (1) though the relative accuracy of estimates generally increases monotonously with the size of the target zone, the monotoneity is often disturbed by the periodicity in the spatial configuration of source zones and the point distribution; (2) the point‐in‐polygon and the areal weighting interpolation methods have the same accuracy of estimates when points are concentrated in less than 12–15 percent area around the representative point in source zones; (3) the point‐in‐polygon method is not so robust against the locational gap between points and the representative point; (4) the optimal location of representative points is given by the spatial median of points.  相似文献   

2.
This paper examines the creation of ‘national day’ in Sweden in order to understand how such a holiday works to shape the Swedish nation's relationship with diversity. Analyzing parliamentary debates and press coverage, the author finds that official national day coverage tends to invest the nation with progressive and multicultural meanings, foregrounding immigrant voices. However, this multiculturalism is polysemic, vague and subject to contestation, both from far right ‘traditionalists’ seeking to ‘protect’ Swedishness from outside influences and cosmopolitans who see the nation as outdated and dangerous. The creation of a new national holiday can be seen as a ‘democratic iteration’ wherein democracy is restated and reinvested with meanings, and new lines of cleavage are drawn, and also as a ‘multicultural iteration’ where multiculturalism is invested with new meaning. Finally, the author argues that multiculturalism benefits from polysemy in that the concept can then adapt to changing circumstances, and, thus, survive.  相似文献   

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Since the adoption of UN Security Council Resolution 1325, the woman‐in‐conflict has emerged as a central figure in the discourse of the UNSC Women, Peace and Security policy community. She is an ever‐present referent in discussions, the person in whose name critique is launched or action demanded. This figure is a representation of the needs and interests of the uncountable, faceless and nameless women affected by and living through war; a representation that takes place through imbuing her with particular meaning or characteristics. These meanings shape how the figure is understood in Women, Peace and Security discourse, which, in turn, constructs the horizons of possibility for both current and future policy and its implementation. This article explores how this figure is produced as a subject through layers of representation and is deeply embedded in the practices and relationships of power in the policy community. It suggests that accounting for these will offer an opportunity for feminist advocates to engage in this institutional space in more considered and effective ways.  相似文献   

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In this paper, we investigate the agenda leadership capability of two American political institutions, Congress and the presidency, in an array of issue areas that include both domestic and foreign policy. The president has long been considered to have the most significant role in setting the policymaking agenda, but there is limited empirical research to support that claim. Examining the issue areas of defense, environment, health care, international affairs, law and crime, and macroeconomics from 1956 to 2005, we find statistically significant positive influence by the president on the congressional agenda in all six of the policy areas under examination, providing compelling evidence of presidential agenda leadership and a reactive Congress. Additionally, we find that the agenda relationship between the president and Congress is issue dependent, in that presidential attention has the largest substantive effect on the congressional agenda in the area of international affairs.  相似文献   

7.
One premise of popular nationalism is that ascribing to a shared culture that enjoys a privileged political status enables us to construct the foundation that is vital to generating and supporting trust among members of the ethnic majority. Multiculturalism presumes that the accommodation of new minority cultures is conducive to trust. Utilising structural equation modelling, this paper distinguishes between ethnic in‐group trust (in the Danish context, trusting fellow Danes) and ethnic out‐group trust (trusting refugees and immigrants), in addition to a more generalised social trust towards unknown others. Previous studies in this field have not distinguished between these different dimensions of social trust. Results show that, vis‐à‐vis generalised trust, at the individual level, nationalism cannot compensate for lower trust towards immigrants with higher trust towards other Danes. There is some support for the ‘national identity’ argument, whereby nationalism, perceived shared values and in‐group trust are positively correlated. However, the net effect of nationalism upon generalised trust remains negative. By contrast, multiculturalism is associated with higher levels of in‐group trust and out‐group trust and ultimately of generalised trust.  相似文献   

8.
This article argues that a new landscape of urbanization takes shape in Canadian cities. In‐between the old downtowns and the new suburbs of urban Canada, a hitherto underexposed and under‐researched mix of residential, commercial, industrial, educational, agricultural and ecologically protected areas and land uses has become the home and workplace, and increasingly also the playspace of most people in Canada. The article examines this new landscape through the lens of the specific risks and vulnerabilities experienced by its inhabitants and users. Using a propane gas explosion in Toronto in the summer of 2008 as an example, we demonstrate that the ‘in‐between city’ is a space of great complexity, which has grown haphazardly and in a contradictory fashion, where, in contrast to the archetype of inner city and suburb, no clear spatial imaginary has been guiding urban development. This leads to always uncomfortable and sometimes dangerous proximities between various and competing uses and social practices. This is nowhere as clear as it is in the splintered urban infrastructures that service this landscape or use the in‐between city's space to service other adjacent or distant purposes.  相似文献   

9.
The present research investigates how definitions of national in‐group boundaries predict inter‐group attitudes in Turkey. In Study 1, we explore definitions of Turkish in‐group boundaries as well as perceptions of the Turkish in‐group's relations with other groups among 64 university students. In Study 2, conducted among 324 university students, exploratory factor analyses reveal two dimensions of Turkish in‐group boundaries: national participation (a more civic definition) and national essentialism (a more ethnic definition). They also reveal four dimensions of the relations with others. Regression analyses show that national participation predicts more negative inter‐group attitudes. However, national essentialism is not found to predict the inter‐group attitudes. These results are compared with those of previous studies, mostly conducted in Western countries. The comparison suggests that conclusions about the positive role of Civic and the negative role of Ethnic/Cultural definitions in intergroup relations may be less general than is previously thought.  相似文献   

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A. SAEEDI  R. REZAEE  B. EVANS 《Geofluids》2012,12(3):228-235
During a geo‐sequestration process, CO2 injection causes an increase in reservoir pore pressure, which in turn decreases the reservoir net effective stress. Changes in effective stress can change all the reservoir and cap‐rock properties including residual saturations. This article presents the results of an experimental work carried out to understand the potential change in the volumes of residually trapped CO2, while the porous medium tested underwent change in the net effective stress under in‐situ reservoir conditions of pore pressure and temperature. The experimental results obtained show that an initial 1725 psi (11.9 MPa) decrease in the net effective pressure caused 1.4% reduction in the volumes of residually trapped CO2, while another 1500 psi (10.3 MPa) reduction caused a further 3.2% drop in the residual saturation of CO2.  相似文献   

12.
This paper describes the design features and capabilities of a portable automated in‐situ closed chamber (ISCC) for the quantification of CO2 fluxes in dryland soils where both photosynthetic and respiratory components may be associated with a cyanobacterial crust. The processes of CO2 flux in dryland soils are briefly described in order to clarify the conditions that make quantification of these fluxes problematic. The instrumentation currently available for in‐situ soil CO2 flux measurements is then reviewed demonstrating their inadequacies for the dryland environment. The ISCC described here is a member of the closed or enrichment class of soil respiration chambers. The ISCC, however, features an optical window possessing high (>90%) transmission in the photosynthetic active region (PAR) of the solar irradiance spectrum, permitting observations of photosynthesis. The ISCC possesses automatic venting and purging so that gaseous concentrations inside the chamber do not change from ambient sufficiently to significantly affect diffusion. The ISCC features both active and passive cooling employing internal solid‐state Peltier coolers and external aluminised Mylar respectively. This avoids severe disturbance of the microclimate within the chamber due to admission of high fluxes of PAR and permits in‐situ operation under a wide range of ambient field temperatures (~ ?5 to 40°C). Sensors internal to the chamber monitor temperature, relative humidity, irradiance and pressure. In this implementation the ISCC is coupled to a portable gas chromatograph (Agilent GC‐3000) to sample the chamber atmosphere. Indicative data for Kalahari Sand soils of Botswana are presented as an illustration of the general performance characteristics.  相似文献   

13.
A US federal law prohibiting the provision of “material support” or resources to terrorist groups has broad implications for anthropologists and other academics working with groups who may be designated as terrorists and the populations that support them or live under their influence. The broad scope and vague language of the law raises the possibility that individuals engaging in some forms of humanitarian aid, charitable giving, peace‐building or academic activities could be prosecuted for offering material aid to terrorists. Problems with the material support law are critically examined as are the dangers faced by anthropologists whose ordinary research, writing and speaking activities might be seen as violating the law. Historical context and the chilling effect on anthropological research and analysis are considered.  相似文献   

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This article frames a themed collection on Nationalism and Self‐determination in the Horn of Africa. It demonstrates how the praxis of self‐determination in the Horn of Africa has contributed to normative developments. On the basis of case studies of Eritrea, Ethiopia, Somalia and Sudan/South Sudan this article argues that nationalism and self‐determination have had different meanings in the political cultures across the different countries and have changed over time. We contend that such indeterminacy is unavoidable and should be welcomed. Nationalism is driven by historical circumstances that are contingent and often transitory. Self‐determination claims based on such nationalism are equally contingent and transitory. When the principle of self‐determination gets translated into concrete legal entitlements (for instance, a referendum on independence), it tends to solve one problem only by creating others. Instead, the pursuit and realization of self‐determination require constant political processes.  相似文献   

16.
This contribution to the Forum Debate on global development focuses on the dimension of functional income distribution between labour and capital and its demand‐side and supply‐side effects. The article summarizes recent literature that has sought to explain the reasons behind the global fall in the labour share. It then discusses the demand‐side effects of the declining wage share on growth, based on the post‐Keynesian/post‐Kaleckian literature. The author presents an alternative policy scenario for the G20 based on a mix of increasing wage share and public investment, before discussing the supply‐side effects of rising inequality. The article concludes with some policy implications for equality‐led development.  相似文献   

17.
The article focuses on the mobilization and reconfiguration of Roman law in the Merovingian kingdoms. It pays particular attention to a collection of legal texts first compiled in the late sixth century, in preparation for the Second synod of Mâcon in 585. Drawing heavily on an extraordinary collection of late Roman imperial laws, the so‐called Sirmondian Constitutions, the bishops sought to declare themselves untouchably sacrosanct. A close analysis of the synodal canons shows that the bishops adapted these imperial rulings to legitimate their position in ways that had no basis in the original laws themselves. The study closes by linking the synod of Mâcon with a debate over episcopal privilege as reflected in the writings of Gregory of Tours, and with a brief look at the further history of the debate in the Carolingian period.  相似文献   

18.
Introducing a new theoretical category in religious studies, “ritual practice of time,” this essay constitutes an analysis about rituals of the structure of space and time of the Aztec fifty‐two‐year calendar in Mesoamerica. Time and space, completed and exhausted at the termination of the fifty‐two‐year cycle, had to be symbolically renewed and recreated in a fifty‐two‐year ritual. Challenging the view held by numerous Mesoamericanists, I demonstrate that the ritual practice of time of the related 365‐day calendar (“New Year ritual”) was not spatio‐temporal in a horizontal quadripartite manner. Given that only one world or cardinal direction of the world was ritually observed, a symbolic re‐enactment of the creation myth could not be executed since it would take four consecutive “New Year rituals” of four years to symbolically define the quadripartite earth. Conversely, the fifty‐two‐year ritual (and the 260‐day ritual) could, in principle, have this very significant meaning and function.  相似文献   

19.
The estimation of age from subadult skeletal remains relies on the measurement of bones, which when unavailable or damaged hampers the ability to generate a reliable age estimate. The goal of this project was to demonstrate two methods for estimating age at death from the developing human calcaneus. These methods are generated from a sample of 32 European American and African American males and females with ages ranging from 1 to 19 years from the Hamann–Todd Collection. The first method was based on linear regression from two standard measurements of the calcaneus (maximum length and middle breadth); the second was based on transition analysis of fusion states of the calcaneal epiphysis. Results suggest that both methods perform well in estimating subadult age at death. Additional testing with larger contemporary samples would likely increase the accuracy of both methods. Copyright © 2011 John Wiley & Sons, Ltd.  相似文献   

20.
High‐sulfidation vein gold deposits such as El Indio, Chile, formed in fracture arrays <1000 m beneath paleo‐solfatara in volcanic terranes. Stable isotope data have confirmed a predominance of magmatic vapor during the deposition of arsenic‐rich sulfide–sulfosalt assemblages in this deposit. These provide a unique opportunity to analyze the processes and products of high‐temperature volcanic gas expansion in fractures that form the otherwise inaccessible infrastructure deep inside equivalent present‐day fumaroles. We provide field emission scanning electron microscope and LA‐ICP‐MS micro‐analytical data for the wide range of heavy, semi‐metals and metalloids (arsenic, antimony, bismuth, tin, silver, gold, tellurium and selenium) in the complex pyrite‐enargite‐Fe‐tennantite assemblages from Copper Stage mineralization in the El Indio deposit. These data document the progressive fractionation of antimony and other heavy metals, such as bismuth, during crystallization from a sulfosalt melt that condensed from expanding vapor at about 15 MPa (150 bars) and >650°C following higher temperature vapor deposition of crystalline pyrite and enargite. The sulfosalt melt aggressively corroded the earlier enargite and pyrite and hosts clusters of distinctive euhedral quartz crystals. The crystallizing sulfosalt melt also trapped an abundance of vugs within which heavy metal sulfide and sulfosalt crystals grew together with K‐Al silicates and fluorapatite. These data and their geologic context suggest that, in high‐temperature fumaroles on modern active volcanoes, over 90% of the arsenic content of the primary magmatic vapor (perhaps 2000 mg kg?1) was precipitated subsurface as sulfosalt. Subsurface fractionation may also account for the range of exotic Pb‐Sn‐Bi‐Se sulfosalts observed in fumarole sublimates on active volcanoes such as Vulcano, Italy, as well as on extra‐terrestrial volcanoes such as Maxwell Montes, Venus.  相似文献   

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