书画装裱材料——宣纸形稳定性的研究

为了加强纸质物的保护,对书画装裱材料宣纸的湿形稳性变化规律进行了研究。通过对不同条件下干燥方法对宣纸形变影响的研究,对纸张变形的原因进行了探讨。实验结果表明,宣纸具有随湿度变形的特性,变形程度与纸的纤维组成和干燥方法有关。采用梯度干燥的方式纸张的尺寸稳定性没有明显的改善。厚度和收缩率相关分析说明二不存在相关性。随着纸张干湿交替处理次数的增多,其变形性趋于减小。为提高纸张的形稳性,可预先进行处理。     

后福特方式下城市产业空间格局和结构的演变——以广州服装产业为例

随着生产方式由福特制向后福特制演变,城市产业空间呈现出特有的格局变化,进而影响城市空间结构的变化.文章在构建后福特生产方式下城市产业空间格局和结构变化的理论框架的基础上,利用2008年和2018年广州服装企业数据,探究其空间格局和结构演变.研究结果表明:①广州服装产业空间格局演变符合后福特生产影响下的产业空间变化特征,...     

一种古籍修复用纸伸缩性检测方法的探讨

补纸选配是古籍修复中的重要环节,但其伸缩性尚未引起足够重视。古籍修复补纸均为传统手工抄制,浸水后强度较低。按现行国家标准浸湿法检测补纸伸缩性时易产生撕裂、变形等问题,适用性较差。本研究探讨了一种古籍修复补纸的伸缩性检测方法——喷润法。利用水分检测仪对补纸相对含水量进行测定,从测量时间和可操作性的角度验证了该方法的可行性。通过十余种常用补纸的伸缩性检测结果发现,喷润法与浸湿法所得结果具有较好的一致性。随后探讨了古籍书叶伸缩性检测的适用性,并结合具体案例,建议在修复前分析古籍书叶与补纸的伸缩性匹配度。喷润法有效避免了补纸浸湿后的拉伸变形或破裂,既适用于古籍修复补纸,也适用于古籍书叶的无损检测,可为古籍修复策略的制定提供科学依据和参考。     

Unravelling the Relationships between Used‐Clothing Imports and the Decline of African Clothing Industries

African clothing industries have declined since the implementation of economic liberalization policies in the early 1980s whilst used‐clothing imports to Africa have increased. The general effects of economic liberalization on African clothing industries are well documented, although little research has been conducted on the particular impact of increased imports of second‐hand clothes on the local manufacturing sectors. Whether these two processes are causally related is difficult to determine due to limitations in official data sets. In this article, the used‐clothing trade is explored in detail and a broad range of cultural and local economic processes are investigated. Trends such as declining local purchasing power and the opening of African markets to cheap new clothing imports, as well as imports of used‐clothing, are examined, along with the converse boost to African clothing export production resulting from preferential trade agreements in the 2000s. With respect to the differential legal and illegal imports of second‐hand clothing to selected African countries, it is demonstrated that official trade data sets often fail to capture the nuances of contemporary social and economic processes.     

The delocalization of production in labour intensive industries: instances of triangular manufacturing between Germany,Greece and FYROM

The clothing industry, by virtue of its labour intensity and low barriers to entry and exit, is at the forefront of the processes of integration in a global network of production and distribution. During the 1970s and 1980s ‘intermediate’ regimes (such as Greece) benefited from the diffusion in clothing production from advanced industrialized countries (such as Germany); however, this trend was reversed during the 1990s. This is because of the intensification of competition from both developed countries (for high quality products) and less developed countries (for price competitive items), as well as the new threat posed by competitors from post‐socialist economies that are trying to find a role in the ‘Newer’ International Division of Labour. Within this context, this article sets out to analyse to what extent collaborative forms of diffuse manufacture, and particularly triangular manufacturing, may be used in the context of south‐eastern Europe. This article argues that ‘triangular manufacturing’ between the industrialized core of the European Union (EU) (and especially Germany), Greece and the Former Yugoslav Republic of Macedonia (FYROM) was the outcome of spontaneous entrepreneurial decision‐making. In the main, it was parent enterprises in Germany and to some extent Greek intermediaries who were the main beneficiaries of the emerging triangular relationships. Enterprises and workers in FYROM remained vulnerable and dependent. However, there were also a handful of instances of ‘good practice’, where relationships were beneficial to all the participating parties. We argue that these examples provide lessons for policy intervention both nationally and locally (in both Greece and FYROM).     

The Bearing Correlogram: A New Method of Analyzing Directional Spatial Autocorrelation

Extensions of nondirectional spatial autocorrelation techniques to two dimensions have existed for many years, but the results are difficult to compare to the traditional nondirectional techniques and often lack ease of interpretability. This paper reviews the traditional one‐ and two‐dimensional spatial autocorrelation methods and proposes a new directional method which is both easier to compare to nondirectional methods and easier to interpret than previous directional methods.     

生态旅游可持续发展四维目标模式探析

本文从理论上探索了生态旅游可持续发展目标的系列问题,基于"生态旅游四体系统"理论,构建了理想的"生态旅游可持续发展四维目标模式",论述了生态旅游可持续发展的"静态模式"和"动态模式",实现生态旅游可持续发展的动力源于生态旅游的多主体受益者。根据生态旅游可持续发展目标内涵的多维性、状态的差异性、受益者的多主体性的特点,应用生态学的"共生理论",得出了生态旅游可持续发展目标实现的最佳途径是其多目标、多受益主体的和谐共生的最终结论。     

A New Methodology and Classification System for Describing Three‐Dimensional Particle Formats: Application to Clastic Lithic Products of Archaeological and Geological Origin

A new classification system is proposed to describe the volumetric formats of clastic lithic products of geological and archaeological origin. In order to build this operative classification, the rectangular block or cuboid is established as the standard geometric format to represent their three‐dimensional format (the X‐axis being length or long diameter, the Y‐axis being the width or intermediate diameter, and the Z‐axis being the thickness or short diameter) on a two‐dimensional diagram. To obtain this graph, each absolute coordinate (X, Y, Z) defining the prisms is projected on to an auxiliary plane with a new set of relative coordinates (x, y, z), expressed as the percentage of their sum. The projection generates a triangular diagram on which the indices of elongation and flatness are represented. A geometric transformation converting the triangular diagram into a quadrangular diagram has been produced in order to better represent the scatter points. Then, a double scale is necessary: (i) an absolute scale to quantify the indices, and (ii) a relative scale to calculate where the graphic locus is projected. This new graph also allows us to work with statistical parameters. Finally, two classic examples of applications selected from the literature are shown.     

Returned to Sender: Some Predicaments of Re‐indigenisation

ABSTRACT It is some 40 years since Australia officially re‐indigenised its Aborigines, at the same time giving rise to cultures of indigenism in the community at large. For those who lived in the closely settled areas, re‐indigenisation entails a new positioning vis‐à‐vis what can be recovered of traditional practices and places, but also vis‐a‐vis non‐indigenous people involved in indigenism. The paper recounts the response of one such indigenous group to the possibility of learning secrets that had long been known to white people, but not to them.     

GRAVITY AND SPATIAL STRUCTURE: THE CASE OF INTERSTATE MIGRATION IN MEXICO*

ABSTRACT The estimation of gravity models of internal (aggregate) place‐to‐place migration is plagued with endogeneity (omitted‐variable) biases if the unobserved effects of spatial structure are not accounted for. To address this econometric problem, this paper presents a more general specification of the gravity model, which allows for (bilateral) parameter heterogeneity across individual migration paths—along with (unilateral) origin‐ and destination‐specific effects. The resultant “three‐way fixed‐effects” (3FE) model is applied for an analysis of interstate migration in Mexico based on cross‐sectional data. To overcome parameter‐dimensionality problems (due to limited or incomplete information), the 3FE model is estimated using the Generalized Maximum Entropy (GME) estimator. The empirical implications of this new modeling strategy are illustrated by contrasting the 3FE‐GME estimates with those for the traditional and two‐way fixed‐effects (2FE) models. The former are far more plausible and intuitively interpretable than their traditional and 2FE counterparts, with parameter estimates changing in expected directions. The (average) effect of the migrant stock is markedly smaller than usually estimated, providing a more realistic measure of network‐induced migration. Migration outflows from centrally located origins have significantly steeper distance decay. Path‐specific distance effects exhibit directional asymmetries and spatial similarities.     

Morphological evolution of three‐dimensional chemical dissolution front in fluid‐saturated porous media: a numerical simulation approach

This paper is concerned with the morphological evolution of three‐dimensional chemical dissolution fronts that occur in fluid‐saturated porous media. A fully coupled system between porosity, pore‐fluid flow and reactive chemical species transport is considered to describe this phenomenon. Using the newly presented concept of the generalized dimensionless pore fluid pressure‐gradient, which can be used to represent the interaction between solute advection, solute diffusion, chemical kinetics and the shape factor of the soluble mineral, a theoretical criterion has been established to assess the likelihood of instability at a chemical dissolution front in the reactive transport system. To simulate the chemical dissolution front evolution in a three‐dimensional fluid‐saturated porous medium, a numerical procedure combining both the finite difference method and the finite element method has been proposed. As the problem belongs to a complex system science problem, a small randomly generated perturbation of porosity is added to the initial porosity of a three‐dimensional homogeneous domain to trigger instability of a planar chemical dissolution front during its propagation within the fluid‐saturated porous medium. To test the correctness and accuracy of the proposed numerical procedure, a three‐dimensional benchmark problem has been constructed and the related analytical solution has been derived. This enables using the proposed numerical procedure for simulating the morphological evolution of a three‐dimensional chemical dissolution front from a stable, planar state into an unstable, fingering state. The related numerical results demonstrate that the proposed numerical procedure is useful for, and capable of, simulating the morphological instability of a three‐dimensional chemical dissolution front within a fluid‐saturated porous medium.     

METALWORKING TECHNIQUES ON THE EURASIAN STEPPES IN THE LATE BRONZE AGE: TECHNICAL ANALYSES OF THE BORODINO TREASURE SPEARHEADS

The Late Bronze Age is a period characterized by chariots and riders, spearheads, bows and battle axes. Such are the assemblages of grave goods attributed to the Seima‐Turbino, Timber‐grave, Abashevo, Sintashta, Pokrovsk and other cultures of the Eurasian forest‐steppe and steppe belt. Although hoard deposits are comparatively rare in this context, this category of finds has also provided some extraordinary examples of metalwork. This paper reports on the analysis of three such artefacts, namely the gold‐ornamented silver‐alloy spearheads from the ‘treasure’ recovered near Borodino in Ukraine at the beginning of the twentieth century. The high‐ resolution technological study of these items presented here includes experimental research to produce similar decorative patterns and a comparison of the resulting traces and imprints with the original archaeological artefacts. The results help to identify use‐wear traces and reveal new information about casting and crafting techniques, tool sets and individual technical styles. Although the spearheads share some basic decorative features such as a gold plate attached to the silver, variations in the tools used and the technical repertoire – chasing, punching, and cutting – suggest that the spearheads were decorated by different hands. The study inevitably leaves many questions about the ‘life history’ for these objects unanswered, but takes the first steps towards a more complete understanding of this remarkable assemblage.     

Front and Back Covers. Volume 20, Number 4. August 2004

Front and back cover caption, volume 20 issue 4
Second-hand clothing.
A master tailor, his son (on the right) and two relatives, all making women's office wear and chitenge (printed cloth) outfits, Kamwala shopping centre, Lusaka, Zambia. This photo illustrates Karen Tranberg Hansen's article on second-hand clothing in this issue (pp. 3-9).
Zambians from all walks of life like to dress well, and this results in a thriving clothing industry in all sectors, from imported new and second-hand clothing and locally manufactured items to bespoke garments made by small-scale tailors. Such tailors play an important role in fulfilling clothing needs and desires that are not met by new and second-hand ready-made clothing. Male and female tailors ply their trade in public markets, shop corridors, and from private homes in cities and small towns across the country. Many of them have engaged actively with the challenge posed by the import of second-hand clothing, 'beating' it, in the words of one master tailor, through speciality production.
Diversifying his production into popular styles of women's wear, the master tailor in this photo trained his son and two younger relatives. They are kept busy with the changes each season in fashions in women's two-piece 'office wear' and chitenge wear (which has become very popular in recent years thanks to the ready availablity, in an open economy, of good-quality and attractive printed cloth imported from South and Southeast Asia and from the Far East). 'Office wear' sees changes in the length and style of shirts and tops, and in the detailing of decorative trim, while fashions in chitenge wear show varying skirt styles and lengths, fitted or loose tops, elaborate trim, and highly constructed sleeves. Zambia's example demonstrates that the much maligned second-hand clothing import trade can coexist comfortably with local initiatives in clothing production.     

History in Two Dimensions or Three? Working Class Responses to History

Research carried out by the author in North Carolina (2007) aimed to assess how museums might help rebuild identity in communities devastated by economic decline. Interviews, compared with examples from ‘Time and Tide’, Yarmouth, UK, suggested that working class people feel a strong need for history, intense emotional ties to the industrial landscape, and believe that museums can radically change their lives. The evidence suggested that the importance of history to people’s sense of self has been underestimated, particularly in the case of the industrial poor. This paper considers reasons for this underestimation, and suggests that these groups may also have higher and more wide‐ranging expectations of history than intellectuals do. It suggests these ‘emotional’ uses of history, rather than being inferior to academic history, may be richer, and that this ‘three‐dimensional’ experience of history exhibited by the urban poor can enrich the two‐dimensional historical experience of the researcher or museums professional.     

Hermits and hairshirts: the social meanings of saintly clothing in the vitae of Godric of Finchale and Wulfric of Haselbury

Solitary ascetics in the twelfth century were renowned for their ascetic practices, among them the wearing of hairshirts and loricae. These were not merely items of neutral ascetic value but could contain social symbolism. The varying possible social meanings of ascetic clothing are here explored particularly through a comparison of the Vitae of the two well known English holy men Wulfric of Haselbury and Godric of Finchale. The hagiographers of these holy solitaries used their ascetic clothing as one means of highlighting their subjects’ social roles throughout their lives, but it is also argued that the solitaries’ ascetic clothing was perceived during their own lives as marking their distinctive relationships with the world around them, and that these relationships were remembered through miracle stories.     

NON‐DESTRUCTIVE ANALYSIS OF ‘ORIGINAL’ SONG DYNASTY GUAN WARES AND LATER IMITATIONS FROM THE PALACE MUSEUM COLLECTIONS,BEIJING

Fifty‐eight porcelain samples in Guan ware style from the collections of the Palace Museum in Beijing were analysed using non‐destructive ED‐XRF. These included 40 vessels that were traditionally ascribed as Guan wares of the Song Dynasty, and 18 vessels traditionally ascribed as imitation Guan wares, made during the Ming and Qing Dynasties. The purposes of this study were: (1) to cross‐check the traditional identification of these wares with the new classification based on their chemical compositions; and (2) to carry out a provenance study of the authentic Song Guan wares—that is, to compare the chemical compositions of the authentic Song Guan wares with those of the shards unearthed from the known Guan ware kilns of the Song Dynasty. This study shows that: (1) the chemical compositions of the glaze are significantly different between the Song Guan wares and the imitation wares—among the 58 wares tested, seven are likely to have been misidentified by the traditional method; and (2) the glaze compositions of the authentic Song Guan wares themselves are not homogeneous, and they can be divided into three groups. The provenance of these groups was briefly investigated.     

Transborder tourism,borderless classroom: reflections on a Hawaii–Singapore experience

This paper discusses a virtual or borderless classroom exercise conducted by the National University of Singapore (NUS) and the University of Hawaii, Manoa (UHM). By reflecting on the experiences and views of the NUS participants, the article explores the possibility of virtual explorations as a substitute for conventional fieldtrips and fieldwork. The findings reveal that online interactions and experiences simulate some of the processes and outcomes of traditional field explorations. Online exercises also permit cross‐country collaboration and trans‐cultural dialogue between students in two campuses. On the other hand, virtual exchanges are limited by their static two‐dimensional medium when contrasted with conventional fieldtrips, which provide multi‐sensory experiences that better allow participants to understand a foreign environment, society and culture.     

ORTHOIMAGE‐BASED DOCUMENTATION OF ARCHAEOLOGICAL STRUCTURES: THE CASE OF A MEDIAEVAL WALL IN PONTEVEDRA,SPAIN

During the completion of the expansion works at the Museum of Pontevedra (Spain), a stretch of about 60 m of the medieval walled enclosure surrounding the historic city centre was discovered. Due to its value as a heritage element, the discovery of this archaeological structure required the implementation of preservation activities and exhaustive documentation so that future generations will be able to know and enjoy this piece of history. This paper presents digital models that reproduce the original structure of the wall using close‐range digital photogrammetry, as well as orthophotos, which thoroughly document the dimensional and textural characteristics of the archaeological site. In addition to analysing the accuracy and validity of photogrammetry in the conservation of archaeological heritage, a methodology of data capture, processing and photogrammetry representation is evaluated.     

‘The Ghost Ship’. An Intact Fluyt from c.1650 in the Middle of the Baltic Sea

We report an exceptionally well preserved 17th‐century shipwreck in the Baltic Sea. The investigation of the intact 3‐dimensional hull at 130 m depth in the cold dark water has demanded new methods of documentation. Field investigation of ‘The Ghost Ship’ has been done in co‐operation with a nautical survey company, combining archaeological skills with advanced technology and filming for a television documentary. The discovery offers detailed knowledge about Dutch shipbuilding and the construction of fluyts. We also believe that study of the social organisation aboard this small trading ship can give insights into the mentality and ideology of the period. © 2012 The Authors