The reconstruction of past environments through small mammals: from the Mousterian to the Bronze Age in El Mirón Cave (Cantabria,Spain)

El Mirón is a large cave in the Cantabrian Cordillera of northern Spain that presents a long archaeostratigraphic sequence radiocarbon-dated by over 60 assays to between 41,000 and 2000 BP. The sediments, collected from four areas within the cave and sieved-washed with fine wire meshes, contain microvertebrate remains of fish, frogs, lizards, birds and mammals, of which the latter are most abundant. Preliminary taphonomic analysis suggests that the microvertebrates were naturally collected by owls and (less) small carnivores. Small mammal assemblages are useful for palaeoenvironmental reconstruction because they are linked to particular habitats and are sensitive to environmental changes. The small mammals from El Mirón are ideal for this because sample sizes are large, bone preservation is good, and the stratigraphic sequence is long. In this paper we reconstruct the late Quaternary environments in the Cantabrian region of Spain using small-mammal assemblages from El Mirón Cave. On the basis of the ecologic adaptations of this suite of fauna, the majority still extant, we have identified seven habitat types, which are plotted through time. The evolution of the small mammal assemblages at El Mirón reveals seven major climatic shifts that correspond closely to the climatic changes recognized in the Iberian Peninsula during the last 41 kyr.     

External Ties and the Reduction of Knowledge Asymmetries among Clusters within Global Value Chains: The Case of the Ceramic Tile District of Castellon

Classical industrial districts' literature is not focused on the role played by external ties but gives more importance to the local districts' endogenous development. Global value chains connect clusters to other external agents through external linkages and constitute a framework to analyse the complex inter-linkages between clusters and other external agents. In the field of the external ties and the global value chain approach Academia is primarily focused on the ties which link clusters in developing nations to global markets, although global value chains also consider connections between clusters in similar activities and even when both are located in developed nations. Thus, external linkages are mainly performed by multinational enterprise (MNE) affiliates which play fundamental role of knowledge diffusers and absorbers in the process of knowledge exchange throughout global value chains. The work examines the process of knowledge exchange between clusters through external ties using the global value chain approach. For this purpose, empirical work is conducted with 22 face-to-face interviews to provide a case study about a leading cluster in the global ceramic tile industry. Results show that the basic knowledge to successfully compete is locally originated, although it can be complemented with global knowledge learnt or generated in other territories. MNE affiliates bridge structural holes through external ties and reduce knowledge asymmetries within global value chains. External ties on network-based governance chains exist, matter and affect clusters allowing upgrading even between developed nations.     

高句丽将军坟的陪葬墓

将军坟是集安高句丽古墓中保存最好的一座大型方坛阶梯石室墓。多数学者认为它是高句丽第20代王长寿王的陵墓。将军坟后面原有一排陪葬墓,中外学者对其数量存在着分歧。1997年清理发掘后,有人认为第二座陪葬墓北侧的长方形石砌台基可能是祭台。通过古代墓祭的相关记载与考古迹象分析,应当是串形的陪葬墓。     

古代建筑油饰彩绘传统工艺的科学化研究

为了获得传统建筑彩绘工艺过程中的相关科学信息,以传统彩绘工艺过程为基础,利用光学显微镜、电子扫描显微镜、红外光谱、紫外可见光谱、动态粘弹谱、冷冻干燥、化学发光、视频接触角等手段对相关物料在传统工艺操作下的相互作用进行了系统研究.研究主要集中在揭示用于地仗制作物料的功能及其原理.研究结果表明:传统工艺蕴涵着深刻的科学内涵.用于彩绘的地仗是一个典型的复合材料,这种复合材料优越的性能来自于各物质间显著的协同作用.每种物料在其中的作用均可以利用现代科学理念给予阐释.这些理念包括聚合反应、高分子薄膜的固化作用、应力分散、网络结构以及物料相容性等.这些研究结果不仅对传统工艺的理解具有重要的意义,而且对于传统彩绘修复乃至当今复合材料研究也具有重要价值.     

我国旅游业研发总体水平、区域分布与政策建议

本文利用文献法和定量分析等方法,深入分析了我国旅游业技术和研发现状。针对我国旅游业研发总体水平低,研发能力集中于发达地区等问题,从观念、政府、机构、人才等方面提出了具体政策建议。     

关于会展业的发展条件及其动力体系的初步探讨

会展业是一个前期投入高,周期长的新兴产业,近年来,我国会展业也迅速发展,会展业的研究受到人们普遍关注。本首先分析发展会展业应该具备的基本条件,并根据这些条件与会展业的关联性提出了会展业发展的动力体系模式,章结尾运用这一模式对我国会展业进行分析,并提出我国发展会展业的一些对策。     

中国旅游创新的回顾与展望:基于文献的研究

伴随改革开放30年进程,中国旅游产业不断走向内生驱动、创新发展之路。其在制度体制机制创新、理论创新等理论研究领域以及区域旅游创新、旅游企业创新等实践研究领域取得了初步成绩,但距离西方同类研究仍有较大差距。本文采取文献统计及文献分析法进行研究,揭示其基本特点,对中国旅游的创新研究主要领域进行文献研究综述,总结其研究的增长规律,立足于旅游产业创新研究的国际趋势和中国实际需要,最后对中国旅游的创新研究主要领域进行了展望。