胡人发型:中古“剪头胡雏”艺术形象试解

古人发型是文化界长期关注的一个重要现象。发型不仅是时代的特征与时尚的符号,也是各个族群的辨识标志。从北朝到隋唐的中古社会,"剪头胡雏"的文物图像屡屡出现,一般来说,此类胡人形象是剪发而不是束发,在当时以"高髻为尚"的社会习俗中,"剪头胡雏"发型是有着"阶级感"的存在,是有关底层胡人的直观艺术产物。也说明当时入华胡人还没有彻底"汉化",仍然保留着本族群的发型特征。该发式是胡人与汉人的区别,也是其身份归属的象征。     

Limits to climate action - Narratives of bioenergy with carbon capture and storage

In recent years, bio-energy with carbon capture and storage (BECCS) has been awarded a key role in climate mitigation scenarios explored by integrated assessment models and referenced in reports by the Intergovernmental Panel on Climate Change. Because a majority of scenarios limiting global warming to 2 °C or 1,5 °C include vast deployment of BECCS, a critical discussion has emerged among experts about the moral implications of thus introducing an unproven technology into the policy realm.In this paper, we analyse this discussion as it has played out between 2013 and 2019, with a focus on how expert narratives are constructed in the mass media about the possibilities for decarbonisation within the current political-economic order. We find there are almost no narratives that support massive deployment of BECCS, and that all narratives presuppose limits to decarbonisation imposed by the current political-economic system. The perception of such limits lead some to argue, through deterministic and apolitical narratives, for the necessity of negative emissions technologies, while others argue instead that “degrowth” is the only solution. Thus, there is a distinct lack of positive narratives about how capitalism can bring about decarbonisation.     

Tensions between municipal reform and outdated fiscal levers in rural British Columbia

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 Small municipalities struggle with outdated financial and governance structures and a provincial public policy agenda that asks them to become more creative, innovative, and “entrepreneurial” in their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.     

污染大气中浑仪,简仪的带锈防护

浑仪、简仪（以下简称两仪）在高PH、大气污染和日晒雨淋环境中的腐蚀是一种动态加速腐蚀过程。采用合成的双唑胺铜缓蚀剂和有机硅改性的甲基丙烯酸树脂,并分别复配成协同缓蚀剂群和含有增效稳定剂的封护剂。采用这两种材料和脱水后再防护的工艺,使带锈防护后的浑仪、简仪的腐蚀低于无污染大气中的速率。用电化学方法评价了防护技术的可行性,根据腐蚀与人工老化试验结果讨论了防护材料性能与腐蚀环境和带锈防护的关系,采用XPS分析方法探索了双唑胺比BTA更适用于两仪防护的原因。     

‘Together apart’ or ‘apart together’? – middle-class parents’ choice of playgrounds and playground interactions in socially diverse neighbourhoods

Taking an everyday life setting, namely playgrounds, as a starting point, the paper foregrounds a nuanced analysis of the internal differentiations of the middle class’s positioning in regard to social diversity. In so doing, the paper contributes to debates on contemporary segregation research, (dis-)affiliation of the middle classes in inner-city diverse neighbourhoods and geographies of encounter. Empirical findings are based on an analysis of the narratives and daily spatial routines of middle-class parents in three inner-city neighbourhoods in a major German town. The findings contradict the conventional wisdom that middle-class parents would always seek a socially homogeneous environment in which to raise their children and show the presence of a middle-class fraction with a collective orientation. The analysis highlights the need for a closer look at playgrounds as a setting for cross-social interaction and, in terms of micro-level politics, a setting to promote diverse and inclusive neighbourhoods.     

Bone diagenesis in the European Holocene II: taphonomic and environmental considerations

We have applied cluster analysis to mercury intrusion porosimetry data from 219 archaeological bones (121 human and 98 animal) and soil chemistry data from 219 accompanying soil samples (1 per bone sample), to investigate the influence of soil chemistry on bone preservation. The samples chosen for the study were obtained from sites ranging in time from the pre-modern to the Mesolithic and were representative of burial environments across Europe (from the Baltic to the Mediterranean). These results represent the single largest database for archaeological bone preservation in the European Holocene to date and demonstrate the potential for large-scale diagenetic studies to help develop long term preservation strategies for our European heritage. Despite the variety of sites and environments, bones could be categorised into only four main diagenetic types. Furthermore, soil chemistry appears to significantly affect only one type of preservation, the pathway characterised by loss of mineral. In neutral to basic soils, taphonomy and in particular the differences between the treatment of human and animal remains, becomes the dominating factor in determining preservation. Using these results, strategies for heritage management of archaeological sites can be suggested; grouping sites into those requiring immediate excavation and those where in situ preservation is viable.     

一批流散海外的吐蕃文物的初步考察

吐蕃文物曾通过不同途径流散于海外,主要包括金银器与织锦。从中反映出吐蕃作为七世纪以来兴起于青藏高原的强大政治集团与唐、粟特、萨珊波斯等都有着密切的文化联系,并已形成具有自身特色的金银器制作风格;以对兽纹为主题的织锦是吐蕃人最为喜好的"番锦"之一,有可能为粟特锦,也有可能为包含粟特锦、波斯锦等中亚风格在内的"胡锦"。吐蕃银器上的纹饰更是多见于吐善时期的装饰性图案当中,并且影响到以后的藏族艺术。     

朱熹《家礼》与明清徽州宗族以礼治族的实践

明清时期,在徽州社会中形成了对朱熹及其《家礼》极端崇拜的社会风气。徽州宗族多依据《家礼》进行本族内部的制度设计和制度建设,同时还十分重视对礼仪的执行与监督,旨在以此实现以礼治族、维持宗族社会秩序的目的。     

巩义出土的唐代题字俑

巩义出土一批唐代题字俑,数量众多,具有一定的地域性。题字内容多为表明俑的名字、身份等,有的题字带有巫诅、避邪镇墓等性质。