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Yong Ge Can Wang Xiujia Huan Su-chiu Kuo Hsiao-chun Hung Zhenhua Deng 《Archaeometry》2023,65(6):1313-1321
The selection of a non-shattering phenotype is a pivotal change in the process of rice domestication. However, current research is heavily restricted by the preservation conditions of macro-plant remains in early and middle Neolithic sites, as very limited well-preserved rice spikelet bases could be retrieved. We present a non-destructive method based on micro-computed tomographic (CT) scanning, which could provide detailed visualization of the internal structures of charred spikelet bases and efficiently discriminate the shattering and non-shattering phenotypes of rice spikelet bases according to the abundance of fusiform echinate phytoliths. It could be widely applied in different contexts, especially those poorly preserved specimens and tempers in pottery sherds, greatly improving our knowledge of rice domestication. 相似文献
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Debates about the future of small municipalities in Canada are set against a backdrop of economic, political, and social restructuring processes that have displaced former state investment policies in favour of neoliberal public policy approaches. Small municipalities struggle with outdated financial and governance structures and a provincial public policy agenda that asks them to become more creative, innovative, and “entrepreneurial” in their approach and responsibilities. Drawing upon key informant interviews with eight case studies in British Columbia, Canada, this research examines the tensions between municipal reforms mandated by the provincial government over the past 30 years and commensurate fiscal levers and capacities in place to address these broadening responsibilities for small municipalities in volatile staples-dependent regions. Our findings demonstrate how successive provincial governments have mobilized New Public Management objectives through a host of legislative and regulatory changes that have increased the responsibilities and requirements on local governments without commensurate fiscal or jurisdictional capacity. 相似文献
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In Westminster systems, governments enjoy a privileged position in the lawmaking process that they can use to deliver on their campaign promises and achieve their policy goals. What policy areas do governments seek to affect through lawmaking? How stable is the executive lawmaking agenda? How responsive is that agenda to changes triggered by elections or by transitions in prime minister? This study uses a dataset of 3982 Australian bills introduced between 2000 and 2017 to answer these questions. While it finds considerable stability in the policy content of executive lawmaking agendas, the analysis also indicates that Australia's executive lawmaking agenda is more responsive to changes in prime minister than to changes in the party in power. As the first application of the comparative policy agendas approaches to government bills in Australia, this article offers new insights into executive lawmaking priorities during an especially turbulent period in Australian politics. 相似文献
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Garth Andrew Myers† 《对极》1994,26(3):195-215
A number of geographers have recently championed the struggle against Eurocentric theoretical categorizations in geographical research on African cities. At the same time, many whose work has concentrated on African urban geography have felt left out in the more abstract theoretical debates of their colleagues based in the West. I argue for the possibility of confronting Western bias and contributing to broader theoretical debates by creating theoretical constructs derived from the African experience. I develop my argument through an analysis of urban development in Ng'ambo, the African “Other Side” of Zanzibar city, and work toward the creation of meso-level conceptual guides for understanding Ng'ambo's development derived from the ideas of Ng'ambo residents themselves. 相似文献