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41.
Luminescence properties of two samples taken from sand lenses in proglacial outwash de-posits of a piedmont glacier that reached the Swiss midlands during the Last Glacial Maximum are investigated in detail. Deconvolution of CW-OSL decay curves shows that the fast component dominates the OSL signal of quartz. The chemistry of single feldspar grains, in particular the K content in different grains, is determined using wavelength dispersive spectrometry (electron microprobe), revealing an average 12.9 wt.% K of the grains contributing to the IRSL signal. D e distributions are investigated in order to gain insights into partial bleaching, and agreement is found for quartz OSL and feldspar IR50 and pIRIR225 ages for small aliquots and single grains when applying the Minimum Age Model. These ages are also consistent with independent age control. For one sample, ages determined using the Central Age Model result in highly overestimated ages for both feldspar and quartz. 相似文献
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A struggle between different forms of food production for the future of agriculture space has been occurring in many regions of the world. Drawing on the literature of the geography of food and the theory of productive worlds, we propose that the discourse strategies deployed by competing actors should be considered part of the set of conventions that guide productive activities. Two examples of discourse strategies are outlined: the use of articulation to position a desired outcome within a historically resonant discourse in order to gain legitimacy; and the maintenance of a strategic tension between isomorphism and differentiation such that a stance is perceived as a credible choice. We describe and map the impacts of these discourse strategies as they were deployed by anti- and pro-genetic modification groups in the struggle to become the “natural” successor to New Zealand's conventional agricultural heritage. The shifts in discourse positions of the two protagonists highlight the increased hybridity and regional complexity of the worlds of food and the battle for agricultural space. 相似文献
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Sally Young 《Australian journal of political science》2002,37(1):81-97
During an election campaign, political advertising is not the only means by which the Australian political parties seek to persuade voters but it is 'the most expensive one, perhaps the most precise one and the only one over which the parties have complete control' (Mills 1986, 132). Over $30m is now spent on advertisements during federal elections, with up to 70% of the major parties' campaign budgets devoted to television advertising alone. When one considers that 90% of Australians are exposed to televised political advertising, the parties' control over these messages takes on particular significance. This article explores the apparently limited interest among academic analysts in political advertising in Australia, explains that advertising now has a central role in the political process and argues that this needs to be recognised in scholarly research. 相似文献
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Kohlstedt SG 《Journal of American history (Bloomington, Ind.)》2002,88(4):425-427
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Sally Young 《Australian journal of political science》2007,42(3):489-502
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, 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), it considers what (if anything) might propel policy reform in such a situation. 相似文献
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Some opponents of compulsory voting claim that rising rates of informal voting point to growing antipathy towards the institution. In order to test this claim we examine recent trends in informal voting, focusing upon some recent figures, particularly those of the 2004 Federal election when there was a sharp rise in informal votes. We suggest that it is not compulsion that is leading to informal voting but rather complexity and its interactions with sociological factors that are brought into play by near-universal turnout. 相似文献
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