SAND FOR ROMAN GLASS PRODUCTION: AN EXPERIMENTAL AND PHILOLOGICAL STUDY ON SOURCE OF SUPPLY*

This paper reports the results of an experimental study performed on Campanian littoral sand, together with a careful philological analysis of Pliny's text concerning the production of glass using the above sand in order to verify its suitability. Accurate chemical and mineralogical characterization of sand samples and experimental glasses was carried out, proving the unsuitability of sand for glass production in its original state. Taking into account both the results of the philological analysis of Pliny's text and the mineralogical assemblage of the sand, a new hypothesis regarding Roman glass‐making technology is proposed and tested here. The technology implies the production of ‘quartz‐enriched’ sand by means of selective grindings according to the different degrees of hardness and cleavage of the mineralogical phases. Melting experiments, carried out on treated sand and in the temperature range compatible with Roman technology, yielded a glass with composition similar to those of typical Roman glasses. Therefore, new perspectives on the sources of supply of raw materials, hitherto debated, are opened up.     

BETWEEN PLACES AND FLOWS: TOWARDS A NEW AGENDA FOR NEIGHBOURHOOD RESEARCH IN AN AGE OF MOBILITY

This article discusses the role of the neighbourhood in an era of increased mobility. It explores the consequences of the “new mobilities paradigm”, which argues that the growing importance of flows – of people, goods and information – results in a deterritorialization of social practices. Rows thus gain prominence in comparison to places like regions and neighbourhoods. At the same time, however, neighbourhoods continue to play a role in the actions and imaginations of people, neighbourhood organizations, and government policies. People still live in neighbourhoods, and governments still try to solve often severe social problems through neighbourhood policies. We argue that the neighbourhood has to be re‐imagined as a collection of hybrid nodes connecting a multiplicity of flows that bind actors and objects in order to understand the potential effectiveness of these policies. From this new mobilities perspective, we make suggestions for future neighbourhood research.     

AFTERWORDS: AN INTRODUCTION TO ARTHUR DANTO'S PHILOSOPHIES OF HISTORY AND ART*

This essay is written as an introductory essay to celebrate the third edition of Arthur Danto's Analytical Philosophy of History, first printed in 1965. It raises questions about what it means to write an introduction and whether it is possible to write an introduction‐given Danto's own philosophical theses on history, the essay pays special attention to the connections between Danto's philosophy of history, philosophy of art, and the other areas of his philosophy that he regards to be all of a piece. It considers the nature of analytical philosophy and its heyday in America in the postwar period, when, to some degree, it was used as an antidote to an ideology of history that had perverted some of the most influential claims in a philosophy of history developed in Germany (mostly by Hegel) around 1800.     

亚文化消费空间场所依赖维度探索性研究——以大连市泡泡玛特门店为例

在后现代消费时代,文化逐渐成为城市消费空间建构的重要手段。其中亚文化以其有别于主流文化的文化特质,引导人们在消费空间中有着别样的空间实践,进而传递给人们独特的空间感知。本文借助场所依赖理论,以大连市 5 家泡泡玛特门店为例,通过开放式深入访谈和参与式观察等形式的实地调查收集资料,运用扎根理论对资料进行三级编码分析,获得一个由亚文化风格、文化审美、消费空间、休闲时间、社会交往五个维度组成的亚文化消费空间场所依赖理论模型。以期帮助人们更清晰的了解,具有不同身份认同的亚文化群体,在多样的文化消费模式下开展的空间实践过程,以及随之产生的空间情感联系。     

北京市公共服务设施供需协调发展的时空演化特征——以教育医疗设施为例

公共服务设施的优化配置是构建和谐社会、改善民生的内在要求。本文通过构建协调发展度模型,对北京市2001年和2012年16个区县教育医疗设施供需关系及二者协调发展的时空演化特征进行研究。研究认为:①教育设施"供不应需",供需差距增大;协调发展等级总体较低且有下降趋势;协调发展水平由"东高西低"向"南高北低"格局演变,空间差异增大。②医疗设施"供不应需",供需差距缩小;供需协调发展等级较低但有上升趋势,空间格局由"中心集聚"向"南高北低"演变,空间差异减小。     

X-RAY MICROANALYSIS OF ANCIENT GLASSY MATERIALS: A COMPARATIVE STUDY OF WAVELENGTH DISPERSIVE AND ENERGY DISPERSIVE TECHNIQUES*

Sensitivity, precision and accuracy of quantitative microanalysis of major, minor and trace elements present in ancient glasses by energy dispersive spectrometry (EDS) is compared to that by wavelength dispersive spectrometry (WDS). Although there are certain problems with EDS due to peak overlaps and background noise, the precision and minimum detection limits of EDS for most of the important elements in ancient glasses were found to compare favourably to those of WDS. Both EDS and WDS, when quantified by comparison to glass standards, can produce reliable results which are adequate for most technological questions.     

CAVES AND GEOPHYSICS: AN APPROXIMATION TO THE UNDERWORLD OF TEOTIHUACAN,MEXICO*

This article describes the result of a geophysical survey in the vicinity of the most important construction of the ancient Prehispanic urban centre of Teotihuacan, Mexico. The survey was intended to locate a system of tunnels under the city. It is proposed that the system was originally dug to obtain construction materials, but afterwards it was used for ideological needs.     

AN EPR AND ISOTOPIC STUDY OF THE MARBLES OF THE TRAJAN's ARCH AT ANCONA: AN EXAMPLE OF ALLEGED HYMETTIAN PROVENANCE*

The provenance of 20 marble samples drawn from the Trajan's arch at Ancona, which is supposed to be made of Greek, Hymettian marble, has been established on the basis of the independent use of EPR and isotopic data. The results of the two methods are in good agreement and unequivocally indicate a Proconnesian provenance. Sixteen samples are assigned to this site, whereas two are classified as untypical Proconnesian samples and the remaining two are assigned an unlikely Parian provenance. No indication exists for a possible Hymettian origin of the marbles. A multi‐method approach, which employs all of the experimental variables simultaneously, demonstrates that the 18 samples identified as Proconnesian belong to several different quarrying areas within the site. This result is taken as an indication that the Proconnesian quarries were run following a highly organized, semi‐industrial production model. The origin of the Hymettian/Proconnesian misunderstanding and the possible misclassification of other Roman monuments in Italy are briefly commented on.     

基于网络大数据的城市内部便利性供需空间特征研究——以南京市中心城区为例

基于便利性的城镇发展战略对于新型城镇化转型具有重要意义。着眼于城镇居民生活质量的提升,围绕供需维度构建便利性测度体系,以多源网络大数据为支撑,分析南京市中心城区便利性的供需空间特征。结果表明,中心城区便利性供需关系多样,空间分布大体类似,倾向于多类聚合分布,并呈现较为明显的圈层集聚特征;主城便利性多供小于求,副城则以低供需平衡及供小于求为主,各公共活动中心便利性发育水平不一;中心城区整体便利性供需水平不高,其空间分布在数量及连续性方面均呈现低供需平衡、低供-中需以及中供-低需依次降低的模式。     

HUMAN SPACE, TERRITORIALITY, AND CONFLICT: AN EXPLORATORY STUDY WITH SPECIAL REFERENCE TO ISRAEL AND THE WEST BANK

This brief and speculative paper focuses direct attention on Totem, in particular certain totemic concerns with space as place. Through adopting an overall structuralist perspective, Eretz Yisrael, the land of Israel, is considered as a totemic space. This is developed against the broader backcloth of Jewish societal development and advanced through a brief study of the continuing Jewish settlement of Samaria. It is suggested that no deeper comprehension of the proceeding settlement initiatives is attainable unless the importance of such a perspective is realized. The brief review, short case study, and pointers to proceeding work provide crucial subjects for further attention. The contentious, indeed emotive, nature of the paper is to be emphasized     

TOWARDS AN UNDERSTANDING OF SPATIO‐TEMPORAL DYNAMICS AT GREAT ZIMBABWE: CONTRIBUTIONS OF THE URBAN ORIGINS IN EASTERN AND SOUTHERN AFRICA PROGRAMME

In 1987 archaeologists from nine African countries and colleagues from Sweden began a co‐operation programme to study urbanism in eastern and southern Africa under the auspices of The Urban Origins programme. The programme involved 22 parallel field projects throughout the West Indian Ocean region and the southern Africa interior. The article presents a compilation of diverse material on Great Zimbabwe that has been scattered in different fora. The research was directed by an overall approach that investigations in urban archaeology in Africa must be at the same scale that people lived in the past. The results briefly presented here show the potential of multivariate assessments of the spatial distributions of large‐scale urban sites in Africa.     

QUICK ESTIMATES OF SOFT SEDIMENT THICKNESSES FROM AMBIENT NOISE HORIZONTAL TO VERTICAL SPECTRAL RATIOS: A CASE STUDY IN SOUTHERN ITALY

An approach devoted to quickly assess the thickness of soft sedimentary cover in areas of unknown subsurface morphology is applied in this study. In particular, soil thickness (h) is derived by combining estimates of the resonance frequency (f _r ) relative to soft sediments with the local shear-wave velocity (V_s) profile. For this purpose, (f _r ) values are assessed from horizontal to vertical (H/V) spectral ratios of seismic noise recordings and the (V _s ) profile is obtained by considering information from shallow seismic surveys. Results obtained for a Quaternary sedimentary basin in Southern Italy are discussed. Since in the investigated area only weak independent constraints are available, special emphasis is given to the assessment of uncertainties involved in this estimate of soil thickness.     

美国乡土景观研究理论与实践——《发现乡土景观》导读

《发现乡土景观》①一书是美国"乡土景观之父"杰克逊关于文化景观研究的力作。杰克逊建立了美国乡土景观研究的理论框架:两种理想景观--政治景观和栖居景观,以及三种景观原型--景观一、景观二、景观三。在此框架下,探讨当代美国乡土景观的典型要素:平面空间、乡村小镇、乡土建筑、可移动房屋、石材与木材、科技风格、新型公园、新田园。该书提出的乡土景观研究方法论、乡土景观内涵的理解等,对当代中国景观研究和景观设计具有重要参考意义。     

基于综合可达性的北京城市增长模拟与管控模式优化

社会经济活动的空间重构与交通设施配置息息相关,可达性成为优化城市空间结构,调控城市空间开发的重要手段。在以矢栅一体化的综合可达性测度并构建城市增长模型的基础上,对北京城市增长进行了成功模拟,透视了基于综合可达性导向发展模式的基本特征与主要问题,并提出了基于综合可达性的城市增长调控模式优化方案。研究发现：①城市增长密集发生在建成区周围可达性优越的区域,随着与城市中心的距离增加,城市增长的概率降低,反映了北京单中心的城市发展模式;②受城市规划与交通设施规划失调影响,可达性提升程度越大的区域并不一定带来更高的城市增长开发概率,严重削弱了可达性对城市增长的引导作用;③基于综合可达性的城市增长调控模式的优化方案,要以交通设施规划为基础,并合理耦合空间规划,才能更为有效地引导城市空间良性增长并预防规划失效。基于综合可达性的城市增长模型建立与调控模式优化方案的提出,对于确立与提升交通引导城市增长的基础性地位,优化城市空间结构具有重要的理论和现实意义。     

FROM VIOLENCE TO RECONSTRUCTION: THE MAKING, DISINTEGRATION AND REMAKING OF AN APARTHEID CITY

This article analyzes the relationship between violence and the racial city. It examines Durban's construction and disintegration in the context of unsuccessful apartheid reform, and traces corresponding distinct but overlapping stages of violence. Internecine violence of the latter 1980s constituted a racially displaced confrontation over political control and resources of the society transformed into internecine conflict within black residential areas, especially the urban peripheries. The violence was rooted in spatial and material differentiation reinforced by township and shantytown power structures, which clandestine state intervention accentuated. The article concludes by analyzing the new spatial and racial city forms, suggesting alternative urban reconstruction paths to redress the deeper causes of violence.     

古村落旅游社会文化影响:居民感知、态度与行为的关系——以广西龙脊平安寨为例

以龙脊平安寨为例,从居民感知的视角,通过构建结构方程模型对古村落的旅游社会文化影响进行研究,探讨居民主体因素与旅游社会文化影响感知、社区发展满意度及行为倾向之间的关系。主要结论:(1)居民文化认同感越强,对旅游社会文化影响的正向或负向感知越强。(2)居民的旅游参与程度越高,对旅游社会文化影响的正面感知越强。(3)居民对旅游社会文化影响的正向或负向感知越强烈,对社区发展的肯定或否定评价越强。(4)居民对旅游社会文化影响的正向或负向感知越强烈,其支持或反对旅游开发的行为倾向越明显。研究还对旅游开发中古村落的社会文化传承和发展提出建议。