Late horizon silver,copper, and tin from Machu Picchu,Peru

Analyses of silver–copper alloy artifacts from Machu Picchu show silver contents ranging from 24 to 81%. The tin present, ranging up to 3%, originated with the copper, perhaps from admixture of recycled bronze. The presence of 0.4–0.9% lead in the silver-rich phase indicates use of silver prepared by cupellation. All the objects had been forged after casting, some extensively. All have surface enhancement of the silver arising from depletion of the copper-rich phase. Some of the tin found at the site contains inclusions of hardhead (FeSn₂) and of a nickel–arsenic–copper compound. Forming trials with duplicate silver–copper alloys show that intermediate anneals at temperatures between 500 and 600 °C facilitate making thin sheet artifacts. Mechanical tests show that the most commonly used alloys, containing 25–30% silver, are particularly well adapted to forging because of their uniform work hardening during plastic deformation. Annealing of the laboratory-made alloys in air followed by boiling in salty weak acid creates a silver-rich surface layer comparable to that found in the artifacts. Depletion forms a dense silver surface on the alloy containing more silver than the eutectic composition, but a porous surface layer on the 25% silver alloys.     

Laboratory evidence of the use of metal tools at Machu Picchu (Peru) and environs

An interpretation of use-wear marks on metal artifacts is developed from the principles of metal cutting and brittle fracture and applied to surficial markings and microstructural damage on bronze tools from Machu Picchu and environs. Most of the tools have blunt edges, relatively low tin contents, and were not work hardened before use; they appear to have been designed for work that involved breaking chips from hard, brittle material. Use-wear marks on these tools are interpreted as due to sliding contacts and impacts with rock. One tool with a relatively sharp edge has a higher alloy content than those with blunt edges and has been work hardened; it appears to have been designed for cutting wood and use-wear markings suggest it was so used. A long bronze bar carries markings that suggest use by stonemasons. Many of the tools are broken and study of their microstructures shows that the bronze used has poor mechanical properties because of porosity and bands of sulphide inclusions.     

Insights into immigration and social class at Machu Picchu,Peru based on oxygen,strontium, and lead isotopic analysis

The Inca Empire (AD 1438–1532) made common practice of relocating individuals, households and entire communities throughout their expansive realm for different reasons depending on subjects' assigned social class. Reconstructing patterns of immigration at Inca-period sites could therefore permit some estimation of the social class(es) among their constituents, and thereby provide insights into the functional dynamics of Inca political economy. However, this is a difficult endeavor using only archaeological lines of evidence. This study presents oxygen, strontium and lead isotopic results from the well-preserved, well-contextualized skeletal population (N = 74) from the Inca site of Machu Picchu, Peru. Isotopic data are used to reconstruct patterns of immigration at the site, which are in turn used to directly estimate the social class of the population. The resulting isotopic data are widely distributed with no apparent modality, matching the expected distribution of a particular class of nonelite retainers. A novel application of multivariate statistics coupled with geological and faunal isotopic reference data also permits tentative estimation of individuals' regions of origin. This study provides empirical and analytical frameworks for future research in reconstructing residential movement and class dynamics in the late prehistoric Andes.     

People in Between: Conversion and Conservation of Forest Lands in Thailand

The analysis of ‘ambiguous lands’ and the people who inhabit them is most revealing for understanding environmental deterioration in Thailand. ‘Ambiguous lands’ are those which are legally owned by the state, but are used and cultivated by local people. Land with an ambiguous property status attracts many different actors: villagers hungry for unoccupied arable lands in the frontiers; government departments looking for new project sites; and conservation agencies searching for new areas to be protected. This article shows, first, how two types of ambiguous land — state‐owned but privately‐cultivated land, and communal lands — were created. It then examines how the Karen, one of the hill peoples living on the ambiguous lands, have been struggling to survive between the forces of capitalistic development and forest conservation. Using a detailed study of forest use and dependency conducted in two Karen villages, I argue that the state’s efforts to reduce the Karen’s forest dependency, or even to evict them from the forests, are not leading to the stated objective of conservation. Finally, I draw some wider implications with reference to James Scott’s thesis on state simplification.     

Palestinian Water: Resources,Use, Conservation,Climate Change,and Land Use

This article addresses the future of freshwater resources in the Palestinian West Bank through a discussion of contemporary issues that each plays a vital role in determining the long‐term sustainability of freshwater reserves, such as water resource availability, trans‐boundary water issues, water reuse and conservation, changes in land use, and the potential impact of climate change on long‐term water management. Climate change and changing land use patterns are already altering this region's water resources. Future predictions regarding the long‐term effects of these changes are complex and therefore inherently uncertain. However, the consensus among most studies on this subject indicates that currently water‐poor regions such as the Middle East will experience even greater water stress in the future. Nearly all of the freshwater consumed in the West Bank is obtained from local groundwater supplies that are suffering overdraft as well as decreasing water quality. Climate change will exacerbate water stress by increasing overall temperatures, decreasing and fluctuating precipitation, and reducing overall aquifer replenishment. Expanding urbanization will continue to strain freshwater supplies by negatively impacting the quality and quantity of available freshwater. Water management in the West Bank is further complicated by total Israeli control over water resources, which often causes water delivery to Palestinians in this region to be marginalized. This article finds that Palestinian and Israeli water managers must plan for future water crises, which will likely be a result of the combined effects of increasing urbanization and climate change coupled with exponential population growth.     

Bernstein's Long Path to Membrane Theory: Radical Change and Conservation in Nineteenth-Century German Electrophysiology

This article aims at illustrating the historical circumstances that led Julius Bernstein in 1902 Bernstein, J and Tschermak, A. 1902. Ueber die Beziehung der negativen Schwankung des Muskelstromes zur Arbeitsleistung des Muskels. Pflügers Arch, 89: 289–331.  [Google Scholar] to formulate a membrane theory on resting current in muscle and nerve fibers. It was a truly paradigm shift in research into bioelectrical phenomena, if qualified by the observation that, besides Bernstein, many other electrophysiologists between 1890 and 1902 borrowed ideas from the recent ionistic approach in the physical-chemistry domain. But Bernstein's subjective perception of that paradigm shift was that it constituted a mere reinterpretation of the so-called preexistence theory advanced by his teacher Emil du Bois-Reymond in the first half of the nineteenth century.     

Managing for Effective Archaeological Conservation: The Example of Salisbury Plain Military Training Area,England

Abstract

Salisbury Plain Military Training Area, Wiltshire, England is the major zone of southern Engizsh chalk downland where archaeological field monuments are comparatively well preserved over large areas. The land is currently managed with regard to military considerations, to its secondary use for forming, and to conservation concerns. Following expressions of concern about archaeological damage, a working party was set up to evaluate the present state of archaeological survival and to recommend for the future. A survey of all sites evaluated their condition by means of a scoring system. Recommendations were made about military use, agriculture, and controlling natural agencies of destruction; and a solution was offered that incorporated eight elements of strategy. The Salisbury Plain study is considered in its context—the English national policy that there should be an archaeological stock-taking of what we have, and a scoring system to make possible some rational choice in selecting from it what is most precious and what is in most need of protection.     

Making Racial Change, Managing Radical Change: The Civil Rights Movement, U.S. Foreign Policy, and Race Relations on the World Stage

Books reviewed:
James H. Meriwether. Proudly We Can Be Africans: Black Americans and Africa , 1935 – 1961.
Thomas Borstlemann. The Cold War and the Color Line: American Race Relations in the Global Arena.     

QENRAB NORBU: Tibetan Doctor and Master Calendarist

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Relationship Between Green Areas and Urban Conservation in Historical Areas and Its Reflections: Case of Diyarbakir City,Turkey

City planning is essential for providing physical environment for better community life and for providing green areas, while conserving historical heritage is an important achievement in city planning, particularly for historical cities such as Diyarbakir city. The focus of this paper is to outline how increasing the ratio of green area in the city centre of Diyarbakir, Turkey, with a land-use betterment model exemplified sustainable urbanism. We observed an applied urban design project that included both opening up free space to the public and increasing the amount of available green area. The project addressed an area adjacent to the Diyarbakir city walls, which are important not only for their history but also as reflections of the urbanization process of Diyarbak?r from prehistoric time to the twenty-first century. We have noticed that changes in the design area provided understanding of the city planning by public and supplied more green areas for children and women. Thus, the city became more desirable and more sustainable.     

Searching for a Balance Between Community Needs and Conservation Policies in Historic Neighbourhoods of Istanbul

Despite the recent rising interest in sustainability and community-related issues among urban regeneration policy-makers, it is still questionable how far the recent regeneration efforts in historic housing areas achieve a balance between the community needs and conservation policies. To answer this question, this article explores the interplay between conservation, community needs and sustainability in the context of Turkey, focusing on Istanbul. It premises on the assumption that finding the balance between the needs, aspirations and concerns of local communities and the conservation of the built environments will lead to more equitable and sustainable solutions to the problems Istanbul historic quarters are facing. The article explains the interrelation between sustainability, community needs and conservation, investigates whether these notions have been integrated into the urban conservation policy agenda of Turkey or not and then examines the assumption above by focusing on the recent regeneration story of Fener and Balat (F&B), a declining neighbourhood in the historic peninsula of Istanbul. Debating on the strengths and weaknesses of the recent conservation-led regeneration programme, the article gives clues for future regeneration initiatives to achieve a sustainable balance between the conservation and community needs policies in historic neighbourhoods of Istanbul.     

世界遗产:人和遗产的关系变革

纵观1978年以来《世界遗产名录》的变化轨迹,可以清晰地看到世界遗产事业发展所走过的道路:从精英阶层的遗产到平民百姓的遗产;从人类征服自然的杰作到人与自然和谐共生的产物;从单一文化的代表到文化交流和交融的成果;从单点小规模遗产到跨区域跨国境巨尺度遗产;从古代遗产到现代遗产;从静态遗产到活态遗产.这种发展还反映在全社会对遗产关注点的变化,即:从关注遗产点的时代断代到关注遗产点在整个历史进程中的地位、作用及影响;从关注文化到关注文化与自然的互动;从关注物质遗产到关注物质与非物质遗产共生:从关注物质遗存到关注物质遗存与社会和人的关系;从关注利益相关者的权益到关注全民参与保护,保护惠及民生的实践.这种认识上的发展体现了"以人为本"的精神,也体现出遗产保护与当地社会发展的和谐共进.