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We have investigated the environmental history of human occupation and the development of agriculture in the eastern interior Lake District of Finland. The material consists of archaeological data, which is reviewed in topographical and agrogeological context, and pollen analytical evidence of agricultural indices from eight precisely dated (varved) lake sediment sequences. Before the Viking Age, archaeological evidence, consisting of stray finds, dwelling sites, and graves, is very scarce. Iron Age finds are clearly confined to the lowland environs with silty and clayey soils. During the Viking Age, the number of stray finds multiplies and the first cemeteries are established. Comparison between Viking and Crusade Period finds reveals a topographic shift toward higher locations and morainic soils. Most of the cup-stones are located on upland sites—that is, not in connection with known Iron Age sites. These are interpreted as medieval indicators of slash-and-burn farming of the fertile but stony supraaquatic morainic soils. There is pollen analytical evidence of sporadic cultivation in the area from the Bronze Age onward. Afterca. AD 700, the occurrence of cereal pollen grains becomes regular but remains discontinuous at each site until after the turn of the millennium. There is then an exponential rise in the cereal pollen rain, indicating a fully agricultural population.  相似文献   
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An important conclusion emerges from an examination of Venetian public acts of the late middle ages: noclurnal supervision became, from the thirteenth century onward, a necessary and permanent pre-occupation of government. This calls for a study of the definition of night-time and of the administrative framework, which reveals an evolution from traditional structures to magistratures specifically charged with maintaining public order. A question arises: fear of the night is ancient and profound; why did the desire to control and master it emerge so late? It seems that the Republic feared real violence less than political violence in the widest sense of the term. Because the night represented a kind of freedom, it had to be brought under control. This found its place within the more general plan of regulating behaviour, a logical result of the constitution of the Venetian state.  相似文献   
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The Australia–United States Free Trade Agreement (AUSFTA) came into effect in 2005. It was the second preferential trade agreement that Australia signed, after its agreement with Singapore, and marked a departure from the primacy of Australia's previous trade policy of unilateral and multilateral trade liberalisation toward preferential liberalisation. This paper assesses the economic effects of AUSFTA by applying the Productivity Commission's gravity model of trade from its Bilateral and Regional Trade Agreements review. The evidence reveals AUSFTA resulted in a fall in Australian and US trade with the rest of the world—that the agreement led to trade diversion. Estimates also show that AUSFTA is associated with a reduction in trade between Australia and the United States.  相似文献   
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