Atmospheric deterioration of Qin brick in an environmental chamber at Emperor Qin's Terracotta Museum, China

Potential mechanisms for the changing appearance of Qin terracotta was evaluated on simulated bricks with, SO₂, NH₃, O₃, and a NH₃/O₃ mixture for total dosages of 2.2–5.4 ppm-years. Changes in the surface composition and appearance were evaluated with scanning electron microscopy/energy dispersive X-ray analysis (SEM–EDX) and X-ray photoelectron spectroscopy (XPS). No observable changes with O₃ exposure were found. Sulfate as sulfur and ammonium as nitrogen increased by 1.2 at% and 0.8 at% of the surface deposit as determined by XPS. O₃ did not have a detectable effect by itself, but when combined with NH₃, NO₃ as nitrogen increased by 1.5 at%, indicating a strong oxidation of NH₃ to nitric acid. The combination of outdoor O₃ infiltration with indoor NH₃, presumably from the visitors, appears to have a greater potential for damage than either pollutant by itself. SEM–EDX mapping of the surface showed sulfur associated with calcium and magnesium compounds after SO₂ exposure, but not before. More detailed microscopic examination showed this primarily in the form of gypsum, especially near cracks and pits in the surface. Both of these mechanisms are probably among the causes of changes in terracotta appearances since they were unearthed in 1974.     

A Model for Measuring the Sustainability Level of Historic Urban Quarters

The main aim of this paper is to propose a model for measuring the sustainability level of historic urban quarters and to indicate an appropriate strategy for their revitalization. Based on this aim, this study first presents the theoretical review on the concept of “revitalization”, and its relationship with sustainability; next, it introduces the characteristics, role, selection process and scaling method of sustainability indicators, which are essential for measuring the level of sustainability. The paper then, as the main contribution of this paper, proposes the model for measuring the level of sustainability in historic urban quarters and determines some proposals to achieve revitalized and sustainable historic urban quarters. Depending on the proposed model, there is a direct relationship between type and the level of obsolescence (revitalization) and the level of sustainability in the physical, economic and social structures of a particular area. Therefore, when the level of sustainability is high in any one of these three structures, it means that the level of obsolescence is low in the same structures of an historic urban quarter. The result of this paper leads us to say that, the level of sustainability is a new (additional) input in the strategic planning process of revitalization and sustainable urban revitalization of historic urban quarters. Finally, the paper concludes with a brief summary on the general arguments of the paper.     

Using Optical Coherence Tomography to Examine Additives in Chinese Song Jun Glaze

We use optical coherence tomography (OCT) to acquire microstructure images of Chinese Song Jun glaze to reveal the copper and quartz additives used and, in two typical samples, we show that the amount added is considerable. Focusing on these two additives, including the species, amount and granule (particle) size added in the glaze, the objective of the present study is to explore how they functioned in relation to the Jun glaze's visual characteristics, opalescence and sky‐blue colour, attributed to the unique liquid–liquid phase separation that occurs in Jun glaze.     

The Role of Pattern‐Welding in Historical Swords—Mechanical Testing of Materials Used in Their Manufacture

Pattern‐welding is a well‐known technique that was widely employed in the manufacture of swords. While the decorative effect of genuine pattern‐welding (employing phosphoric iron) is indisputable, to date its reinforcing effect is rather unclear. In order to understand this issue better, wrought iron, phosphoric iron, steel and various pattern‐welded samples were prepared and mechanically tested, and the results obtained are discussed in detail. Both the mechanical testing and the long‐term metallographic investigation of medieval swords suggest that pattern‐welding does not have any significant positive effect on the mechanical properties of swords and we should consider it a primarily decorative technique.     

How Regional Innovation Systems Play a Relative Competitive Role Within Knowledge Networks

This study aims to explain how specific regional innovation systems (RISs) play relative important role in the knowledge network within European regions. EC encourages the interactions between regions and develop toward a cohesion balance. The whole Europe can be taken as a knowledge network that consists of different RISs possessing diversified resources. The existences of hierarchical relationships between different regions seem to lead us to explain whether the path toward higher-order position can be done by RISs to shape the regional competence in specific technological fields. We establish the datasets on the basis of patent data (from EPO) and REGIO database. Regional-level dataset, including 129 regions, helps to explore how different RIS develop their technological paths, and whether locational economic factors, technological conditions, and local innovativeness help RISs toward high-order position in the network. In addition, we also explore the role of the interaction of local factors for RISs in developing network position in Europe.     

韩国的当代中国政治研究述评

迄今为止,还没有对韩国的中国政治研究状况做出评估。韩国的当代中国政治研究值得关注至少有以下三个理由:第一,韩中关系在过去十多年取得了非同寻常的扩展;第二,在中国学习的外国学生中,韩国留学生的数量最多;第三,尽管刚刚起步,越来越多的韩国学者在当代中国研究的主流英文期刊如《中国季刊》(The China Quarterly)和《中国杂志》(The China Journal)上发表文章。本文主要对三类学术成果进行     

Rising Sino-Japanese competition: perspectives from South-East Asian elites

One of the biggest challenges for the East Asian region today is the Sino-Japanese relationship. Starting with the fishing trawler incident in September 2010, followed by Japan's nationalisation of the Senkaku/Diaoyu Islands, this relationship is experiencing an escalation of tensions in most, if not all, areas of the bilateral relationship. In response to the intensifying competition, China and Japan have elevated the importance of South-East Asia and the Association of Southeast Asian Nations (ASEAN) in their foreign policy strategies. Focusing on how elites from five South-East Asian states—Indonesia, Malaysia, the Philippines, Singapore and Vietnam—perceive the engagement of China and Japan with the region, this article poses two questions: (1) How do South-East Asian elites view the Sino-Japanese competition? and (2) How do South-East Asian elites view the role of ASEAN in managing the competition? The analysis here concludes that while some South-East Asian elites see opportunities in the Sino-Japanese competition, they nevertheless do not perceive it as an issue of critical significance. Instead, the concern lies generally with major-power dynamics, and particularly with Sino-US relations. ASEAN is viewed to lack the ability to manage the negative consequences of the Sino-Japanese competition, although its external balancing function has perceptibly helped to restrain any escalation of major-power tensions.