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Relatively little is known about the possibilities and limitations of voluntary public programs. The so-called 33/50 Program for reducing releases of certain toxic chemicals into the environment provides a useful instance for examination. In an investigation of toxics-reduction outcomes, with states as units of analysis, economic and policy variables help to explain the results. In particular, channels and approaches used In communicating policy intentions are related to outcomes. Voluntary programs can make a difference, but the details of execution, including the extent and nature of field efforts, influence outcomes.  相似文献   
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The city of Herculaneum (Naples, southern Italy), buried by the volcanic eruption of Mount Somma-Vesuvius in 79 ad, is a key site for understanding the timber economy during the Roman period. In this paper, the results of charcoal analysis of different building element types are presented. Beams, joists, poles, planks and door and window frames were investigated allowing us a view of which timber the Romans preferred for building in this area. We also fit the taxonomic results into the reconstruction of the ancient Campanian landscape, and finally, we discuss the knowledge that the Romans had about the technological properties of the wood that they used for building and the possible selection criteria that they followed in choosing them. Coniferous timber is the preferred material for building purposes. Abies alba is especially used, this fact confirming its stronger presence in southern Italian woods during the past and suggesting that its decline is mainly due to human overexploitation. The large presence of Cupressus sempervirens, selectively used for the production of poles, confirms that this tree was cultivated in plantations for timber production in the Vesuvius area. Furthermore, it might indicate that cypress could have been present as a natural tree in the local vegetation, suggesting a forest type that nowadays almost completely disappeared from this area and from the entire Italy. The findings of Juglans regia, Pinus pinea and Olea europaea, typical elements of the Mediterranean cultural landscape, show that their use was not limited to fruit production and that Romans also appreciated their timber. Beside these local resources, the presence of Picea abies and Picea/Larix indicates the importation of timber from northerly regions, probably the northern Apennines and the Alps.  相似文献   
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While women's share of employment has risen in many countries over the last two decades, gender job segregation has worsened, with women increasingly excluded from ‘good’ jobs in the industrial sector. In this article, the determinants of gender job segregation are assessed using panel data for a broad set of developing countries covering the period 1991–2015. The effect of gender job segregation on all workers, via the labour share of income, is also analysed. The results identify two major contributors to gender job segregation — the rising capital/labour ratio and the ratio of female/male labour force participation rates — indicative of ‘crowding’ and exclusion as economies move up the industrial ladder. The analysis further indicates that the crowding of women into lower quality jobs has a negative effect on workers as a whole by dampening the labour share of income. Those processes are influenced by global and macroeconomic conditions and policies that have circumscribed the expansion of high‐quality jobs relative to labour supply, intensifying competition for ‘good’ jobs and weakening labour's bargaining power.  相似文献   
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A third‐millennium BC tomb was subject to a rescue excavation in connection with the construction of a new road near the village of Al‐Khubayb in the Sultanate of Oman. It yielded a small number of finds, especially small metal objects that belonged to a later reuse of the tomb in the Samad period. As all diagnostic finds from the tomb date to the reuse, its architectural elements were the only indicator for the construction date of the tomb. Besides its small size and large wall thickness, which might suggest that the tomb is a transitional type between the Hafit and the Umm an‐Nar periods, its separation into two chambers and its facade made of white, dressed stones, can be seen as a clue for a construction date of the tomb in the Umm an‐Nar period.  相似文献   
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Abstract

This article focuses on the aesthetic and affective techniques of saturation through which posters legitimated the Party-State in Mao’s China by closing the gap between everyday experience and political ideology. Propaganda posters were designed to put into practice the principle of unity, as conceptualised by Mao Zedong. The argument posits that while the “poster” is normally a printed edition of a painting or design intended for mass distribution in this way, the term may fairly be deployed to capture other cultural objects that function as “posters”, in that they provide public, political information that expresses or constructs a political self in aesthetic form. This approach requires a metonymic understanding of a visual field in which cultural objects are interrelated and mutually reinforcing. The essay draws on recent in-depth interviews with poster artists of the 1960s and 1970s.  相似文献   
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This article explores the juxtaposition of the 1853 Irish Industrial Exhibition in Dublin and the dramatic rise of department stores in the city during the same decade. It analyses the aims, structure and reception of the 1853 Exhibition within the context of the Irish industrial movement, the economic modernity of the post-Famine era and the dramatic changes to consumer culture which were occurring during the 1850s. The article takes as its focus the hitherto neglected ‘monster house’ controversy – conducted in pamphlets and public lectures – regarding the growth of Dublin's department stores. Coinciding with the 1853 Exhibition, the controversy rehearsed many of the same concerns regarding economic and social structures in Irish urban society in the wake of the Famine. Consideration of the ‘monster house’ controversy alongside the issues raised by the 1853 Exhibition allows a new perspective on the development of middle-class urban life in Dublin during the mid-nineteenth century.  相似文献   
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