A Base Isolation System for Developing Countries Using Discarded Tyres Filled with Elastomeric Recycled Materials

This article studies the performance of economic base isolators using tyres filled with elastomeric recycled materials. The research was conducted to analyze base isolators to be used in developing nations, where the application of conventional elastomeric rubber bearings due to economic reasons is limited.

The tested isolators are made of kart tyres filled with different recycled elastomeric materials and aggregates. Dynamic and static tests proved acceptable vertical to horizontal stiffness ratio of the bearings and shake table tests showed an excellent enhancement of the base isolated structural response compared to the corresponding fixed base structure.     

浅析中亚国家的社会分化与整合

本文通过对中亚国家独立十年来的民族社会结构分化与社会整合等问题的探讨 ,揭示了中亚各国在独立道路上所遇到的困难与波折 ,分析了中亚各国的社会发展情况。从社会结构的分化上来说 ,中亚各国独立十年来体现在各领域的分层十分明显。从社会整合方面来讲 ,由于前苏联人为地造成的资源分配的不平衡 ,导致中亚各国资源利用上的匮乏 ,致使其政治系统的正常运行受到严重的打击 ,结果给中亚各国的社会整合带来了较大的困难。目前中亚各国的社会整合任重而道远 ,需要社会各部分力量的相互协调与合作。     

The role of exogenous and endogenous factors in the growth of regions in Central and Eastern Europe: the metropolitan/non-metropolitan divide in the pre- and post-crisis era

ABSTRACT

The aim of the paper is to analyse regional growth factors in Central and Eastern European Countries in the pre- and post-crisis era. The comparison is focused on core (metropolitan) and non-core (non-metropolitan) regions. The study found that the development processes of the analysed groups of regions were in many respects similar. Achieving a high level of development in the context of post-socialist transformation was possible mainly owing to exogenous factors such as the influx of foreign direct investment (FDI) and multimodal transport accessibility. In the case of endogenous factors, the number of small- and medium-sized enterprises per capita was of cardinal importance for a high level of development, but it was no guarantee of fast growth dynamics in non-core regions. The main differences between the core and non-core regions included the role of human capital and migrations as metropolitan regions represented growth poles which trained qualified specialists and served as destinations for migrants from non-core regions. However, the share of people with tertiary education played an important role in the development process of non-core regions. The crisis strengthened the role of exogenous growth factors, that is, the role of FDI inflow as well as the role of EU funds.     

‘Our land is only founded on trade and industry.’ Economic discourses in fifteenth-century Bruges

Economic historians study production, consumption, market phenomena, and economic policies, while what is referred to as ‘the history of medieval economic thought’ largely remains the province of historians of ideas. However, participants in medieval industry and commerce, informed by daily production, market and financial practices, also uttered discourses on the state of the economy and on the measures governments should take to resolve crises or economic decline. When the burghers of Bruges formulated their economic demands in times of crisis, such as during the revolt of 1488, their utterances reveal commonly accepted presuppositions of which institutional levels, the prince, the town, or the guilds, should stimulate the economy by reducing transaction costs.     

发展低碳经济 实现青海可持续发展

低碳经济的特征是低能耗、低污染、低排放,这种经济发展模式在给青海经济社会的发展带来巨大挑战的同时,也带来了前所未有的机遇。以低能耗、低污染、低排放为基础的低碳经济必将成为实现青海可持续发展的必由之路。     

Determining the Firing Temperature of Low‐Fired Ancient Pottery: An Example from the Donghulin Site,Beijing, China

The traditional thermal expansion method using a dilatometer fails to accurately determine the original firing temperatures of low‐fired ancient pottery. For this reason, we have developed an improved method of determining firing temperatures for low‐fired pottery. This paper explains the theory of the improved method and presents the reasonably satisfactory results obtained on ancient pottery from the Donghulin site (c. 10 000 bp ). The method and the results are very important for the study of ancient pottery culture and clay moulds used for bronze casting.     

中亚国家独立前后跨国民族的迁移对其民族结构的影响

本文对中亚各国民族结构主体民族化的状况进行了分析研究。认为在中亚国家政局动荡、经济陷于危机的形势下,民族结构的主体民族化有利于各国暂时缓解民族矛盾和稳定政局,有利于暂时缓解失业带来的社会压力;然而从长远的发展角度来看,它侵蚀了中亚社会稳定的基石,不利于中亚各国社会的长治久安,破坏了良性的社会结构,加速了中亚社会的分化。     

The Low Countries' connection: landscape and the struggle over representation around 1600

In Anglophone geography, the concept of landscape is often defined in visual terms as the expression of a spatial rationality. Historically, the strongly visual qualities of landscape tend to be related to early capitalist developments in Italy and the Low Countries. Yet, recent scholarly interventions have asserted that landscape in early modern Europe also animated so-called ‘platial’ (or place-oriented) practices and ideologies of political representation, justice, and custom. This paper seeks to bring these diverging platial and spatial approaches together through an examination of political and visual representation of landscape in the northern Low Countries around 1600. It is argued that the tensions between platial notions of landscape and spatial rationality were unceasingly pertinent to the protracted struggles over political representation in the Low Countries during the revolt against Spain. Visual representations of landscape provided ways to take in, reflect upon, and codify those struggles. The Dutch landscape remained entangled in a double dialectic in which spatial and platial modes of political and visual representation mutually shaped each other.     

低温竹炭净化文物保存环境空气中氮氧化物的探索

NOx是文物保存环境的一类重要的污染物,近期采用资源丰富、价格便宜的竹材及竹炭作为吸附剂去除污染物成为热点.本工作采用低温竹炭净化低氮氧化物,并对效果的影响因素进行了探讨,使用扫描电镜对低温竹炭表面形态进行了研究.研究表明,低温竹炭处理浓度在133～457 μg/m3NO时,处理效率可以达到84%～94%,处理浓度在82～453 μg/m3NO2时,处理效率可以达到93.3%～97.7%.当NO和NO2同时存在时,NOx在500 μg/m3时(NO:NO2=2:1),NO的处理效果下降,仅能达到44.7%,但是NO2的处理效果变化不大,仍可以达到98%.     

蒋藏本《唐韵》撰作年代考

现存的蒋藏本《唐韵》残卷中总韵数为204,比《广韵》少了严韵上去声。其所征引的州、郡、县名有些是唐武德至开元二十年期间的名称,有些则是唐以前、甚至是汉代的名称。孙愐的《唐韵》有开元、天宝两本。本文考定蒋藏本的成书年代是开元二十一年(733)。