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81.
This article examines whether low-income countries can still benefit from participating in manufacturing global value chains (GVCs) in terms of broader industrial development in a global context of greater competition and higher requirements. It contends that developing internationally competitive local firms and domestic linkages, in addition to upgrading, is crucial for participation in GVCs to drive industrialization. The study focuses on Ethiopia's recent experience with developing an apparel export industry through strategic industrial policy. Based on original empirical data collected through firm-level surveys and interviews with government officials, industry experts and buyers, the article analyses the upgrading and localization trajectories of foreign and local apparel-exporting firms. It argues that value-capture benefits in assembly positions in apparel GVCs have become more difficult. The potential for localization benefits depends on the type of global buyers and foreign producers and their levels of embeddedness, but whether this potential is realized also depends on local firm characteristics and related industrial policy. Ethiopia's industrial policy has been relatively successful regarding national economy linkages, but less successful in developing competitive local export firms due to a weak local manufacturing tradition combined with a global context that has led to a supplier squeeze.  相似文献   
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Strontium isotopic analysis has been proposed as a suitable method to determine the primary production location of ancient plant ash glasses. The technique is based upon the assumption that Sr enters this glass type with the plant ash used as a flux material, and that the 87Sr/86Sr ratio of the resulting glass reflects the geological provenance of that flux. In such case, the bulk Sr isotopic composition of the bedrock should be inherited unchanged in the plants growing on that bedrock. Different types of plant ash glasses have been shown to have widely differing 87Sr/86Sr compositions. In this study, the 87Sr/86Sr composition of several plant species growing on different bedrock types is measured, and compared to the bulk Sr isotopic composition and petrology of that bedrock. The paper shows that the 87Sr/86Sr ratio of these plants is a function not only, or even mostly, of the local geology, but also of the Sr isotopic composition of the total water consumed by that plant. This is highly likely to be both plant species dependent and dependent on the small-scale hydrology of the area immediately surrounding the plant. In this way, no definite relation between the isotopic composition of a geological outcrop and the plants growing on this bedrock can be inferred. Hence, the isotopic composition of a plant ash made from such plants is uncertain and moreover species dependent. Though groups of plant ash glasses can certainly be compared in time and space using Sr isotopes, it may prove difficult to ascertain a plant ash glass type to a specific geographical-geological region.  相似文献   
85.
Natron deposits, the best known of which being those at Wadi Natrun in Egypt, have been used as the flux in the production of vitreous materials from the early 4th millennium BC onwards. In the present paper, the history of the use of natron as a flux is traced from its beginnings in the glaze of Badarian steatite beads, through its use in glass production starting in the 1st millennium BC, until its apparent shortage during the 7th to 9th centuries AD, and its subsequent replacement by plant ash during the 9th century AD. Documentary evidence for possible natron sources in Egypt, including the Wadi Natrun, and around the eastern Mediterranean is summarised, and the results of recent fieldwork at the Wadi Natrun and at al-Barnuj in the Western Nile Delta are presented. The possible reasons for the apparent shortage of natron from 7th to 9th centuries AD and its subsequent replacement by plant ash as the flux used in glass production during the 9th century AD are then considered. These include the possibility that, because of the massive scale of glass production, the demand for natron exceeded its supply; the possible effect of climatic changes; and the potentially disruptive role of political events in the Wadi Natrun–Delta region.  相似文献   
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The microstructures and chemical compositions of some 15 faience objects from Crete spanning the period from Middle Minoan IIIA through to Late Minoan IA are determined using analytical scanning electron microscopy. The Minoan faience is compared with replicate faience beads produced in the laboratory using various combinations of manganese, copper and iron as colorants. The alkali contents of the replicate beads are varied so that the colorants are present both as ions in a glass phase and as particulate oxides. These data are then used to try to infer the original colour of the Minoan faience, the great majority of which has suffered severe weathering during burial. The results suggest that instead of the present day “hallmark greys and browns” and “subtle greens and blues”, Minoan faience originally exhibited a wide range of colours, including bright turquoise blue, purple and violet, and pale yellow-green and greenish turquoise.  相似文献   
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The form and character of the British welfare state is undergoing another round of reform. Welfare modernisation now focuses on the creation of ‘aspirational citizens’ in deprived areas or communities, individuals, and groups who will ‘better’ themselves and become more like an imagined social ‘mainstream’. Old-fashioned policies that promoted expectations of improvement have been replaced by this focus on encouraging new forms of self-reliant, aspirational citizenship. This paper interrogates the nature of this discursive shift. It argues that an existential politics, built around notions of aspiration, is being rolled-out across the British welfare state and that this has significant material and political implications. It begins by critically assessing the terms aspiration and expectation. It then draws on recent urban and spatial policy agendas to empirically explore the nature of this shift and its wider effects on urban societies, economies, and environments before concluding with a discussion of possible future research directions and agendas.  相似文献   
88.
Two methods have been devised for analysing data from Thellier-type investigations of specimens with two components of magnetization in different directions. Some results obtained on laboratory test specimens are presented and discussed.  相似文献   
89.
This article reports the responses of New Zealand local government councillors concerning their preferences for, and experiences of, council officer employment; and the values councillors perceive that council officers adopt in their dealings with councillors. This study received responses from slightly fewer than one hundred councillors in New Zealand local government out of 247 and therefore, the results presented here should be viewed as indicative only because of the small sample. Nevertheless the survey found that 54 per cent to 77 per cent would prefer to have influence over council officer employment, with council officers displaying deference to the authority of councillors. Councillors prefer to have frank and fearless advice but they prefer not to be under pressure from council officers to accept that advice. This ensures that they obtain the type of support they need to carry out the tasks and responsibilities that have been conferred on local authorities; and they – the councillors rather than council officers – remain in control of the council affairs.  相似文献   
90.
Archaeologists have long debated the origins and mode of dispersal of the immediate predecessors of all Polynesians and many populations in Island Melanesia. Such debates are inextricably linked to a chronological framework provided, in part, by radiocarbon dates. Human remains have the greatest potential for providing answers to many questions pertinent to these debates. Unfortunately, bone is one of the most complicated materials to date reliably because of bone degradation, sample pre-treatment and diet. This is of particular concern in the Pacific where humidity contributes to the rapid decay of bone protein, and a combination of marine, reef, C4, C3 and freshwater foods complicate the interpretation of 14C determinations. Independent advances in bone pre-treatment, isotope multivariate modelling and radiocarbon calibration techniques provide us, for the first time, with the tools to obtain reliable calibrated ages for Pacific burials. Here we present research that combines these techniques, enabling us to re-evaluate the age of burials from key archaeological sites in the Pacific.  相似文献   
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