向二氯化碳宣战——化学奇案：失踪的碳元素

一切都显示在荧幕上,森林正在呼吸。美国马萨诸塞州某处林地中,夏末的阳光穿透翠绿的林冠洒落下来。哈佛大学的大气科学家史蒂芬．沃夫西用各种仪器正监测着这片森林的生命机能。鲜红的数字在计量仪上闪动,这些读数显示出小屋附近树顶处的二氧化碳浓度。这些数字比全球平均值低了10ppm（百万分之一）：大约是360ppm,这都是这些树的功劳。沐浴在阳光下的树木吸入二氧化碳,将之转变成叶子和木材。在吸收养分的同时,这片长有松树、栎树和槭树的树林同时也将人类引起的全球性巨变抵消了一小部分。     

Tom's Tambu House: Spacing,Status and Sacredness in South Malakula,Vanuatu

This paper is based on video footage I filmed in South Malakula in April 1996. It explores the case of Tom Moses, a man who claims to speak with God. He has constructed a house on the outskirts of Milip village which he has declared tambu, or taboo/sacred. Around it he envisions a new living space, following directions given to him from God. I argue that Tom's enterprise can be understood in terms of a spacing—status—sacredness nexus. This nexus is grounded in a pre-Christian Malakulan sociality revolving around men's houses, ancestral worship and grade-taking rituals. This takes place with a lived Christianity which in many contexts is expressed as a departure from kastom. As such, I argue that this ‘spatial’ analysis can help us understand dimensions of local human relationships which purely discursive analyses sometimes eclipse.     

Environmental Values and Water Policy

The emergence of water markets has heralded the prospect of increased efficiency in the use of the resource for extractive purposes. However, water markets have not encompassed all elements of demand for the resource. Notably, demands for the environmental public goods provided by river flows have not been revealed in markets. State Governments have instituted regulations requiring ‘environmental flows’ to be quarantined from the market allocation process. This policy has triggered negative responses from irrigators and conservationists. Lobby groups have found that the process of determining environmental flows is a prospective site for rent seeking. To avoid policy being driven by rent seeking, information on the costs and benefits of environmental flows is useful. Whereas the costs of environmental flows are readily assessed through reference to market data on irrigators’ surpluses foregone, the benefits must be estimated through the use of non‐market, stated preference valuation techniques. These techniques — including contingent valuation and choice modelling — remain controversial. Some argue that they should not be used on ethical grounds. Others argue that they cannot be used on technical grounds. These arguments are discussed in this paper, using the context of the water policy debate. The evidence is that stated preference techniques are being used, and applications have been performed in Australia in the context of riverine health. However their use remains restricted relative to the scale of the Australian natural resource management task. Some possible explanations for this limited up‐take are provided along with some suggested ways forward.     

Investigating archaeological site formation processes on the battleship USS Arizona using finite element analysis

Scientists from the National Institute of Standards and Technology (NIST) worked in a collaborative partnership with archaeologists from the National Park Service's (NPS) Submerged Resources Center (SRC) to develop a finite element model (FEM) of the battleship USS Arizona. An FEM is a computer-based engineering model that calculates theoretical stresses, propagation of force, and shape changes to a structure under loads using thousands or even millions of individual elements whose individual responses are well understood. NIST researchers created an FEM of an 80 ft. (25 m) midships section of the Arizona site to analyze archaeological site formation processes on the sunken battleship, in particular to determine the current condition of the wreck and predict its future strength and structural integrity as it continues to corrode. The NIST's FEM study is one aspect of a larger project under the direction of the NPS, the USS Arizona Preservation Project, whose goal is to determine the nature and rate of corrosion affecting USS Arizona, and to model its long-term structural deterioration. The FEM incorporates findings from other key components of the USS Arizona Preservation Project, such as steel hull corrosion rates, structural surveys of the vessel, sediment compaction studies, and analysis of the concretion that covers the ship's hull, into a single tool that is being used to predict how the wreck will degrade in the future.     

Official Statistics and the Contemporary Politics of Indigeneity

Critical scholarship on colonisation tells us that official statistics have reflected the perspectives of the colonisers. However, the colonised, in asserting ‘Indigenous rights,’ have begun to use official statistics to advocate policies that will relieve the continuing structural injustice that is colonisation's legacy. This paper examines Aboriginal and Maori intellectuals' efforts to quantify, using official statistics, the ‘unfinished business’ of settler colonial liberalism. Examining Aboriginal and Torres Strait Islander Social Justice Commissioners' annual Reports, the paper argues that their quantitative comparisons of Indigenous and non-Indigenous populations highlighted the contested implications of ‘equality.’ Turning to New Zealand, the paper reviews two issues: the appropriate boundary of the ‘Māori population,’ and whether it is possible to measure Māori well-being according to Māori norms. The paper draws on the work of Andrew Sharp to make sense of the difficulties and opportunities that face Indigenous intellectuals in Australia and New Zealand when they operationalise ‘social justice’ in the terms of a comparative statistical archive. The paper argues that there are now two distinct idioms in which to represent the collective Indigenous presence within settler colonial nation-state—one signified by the concept ‘population,’ the other by the concept ‘people.’ The tensions between ‘population’ and ‘people,’ resonating with undecided issues about the claims of Indigenous citizenship upon a liberal policy, are a feature of contemporary Indigenous political discourse.     

Slag inclusions in iron objects and the quest for provenance: an experiment and a case study

Slag inclusions are found within most archaeological bloomery iron artefacts and are remainders of slag created during the smelting and smithing processes. Although they are widely believed to provide data with the potential for provenancing iron artefacts, previous slag inclusion studies have mostly proven inconclusive. The main aim of the work reported here is to analyse experimental smelting and smithing assemblages (including ore, furnace lining, fuel and slag), to compare these to slag inclusions in the resulting bloom and worked objects, and then explore the relationships between ore, slag and slag inclusions. This study has revealed that the composition of slag inclusions most closely relates to the smelting slag produced, whereas provenance to a specific ore would be difficult due to the chemical variability derived from furnace lining, fuel and any fluxes used. Some compounds in the slag inclusions are particularly affected during smithing of the artefact, i.e. those present in the sand flux and fuel used. However, trends are observed in the K₂O/MgO, MnO/SiO₂, Al₂O₃/SiO₂, Al₂O₃/MgO, Al₂O₃/K₂O and Al₂O₃/CaO ratios that allow comparison between slag inclusions and smelting slag in these experiments, and may therefore be used during other provenancing attempts. The knowledge gained from the experimental assemblages was subsequently applied to an archaeological case study, examining objects from the 900 Cal BC smithing site of Tel Beth-Shemesh, Israel and the 930 Cal BC smelting site of Tell Hammeh, Jordan. The analyses suggest that none of the artefacts examined derived from the Hammeh smelting system.     

Palaeodiet at Eton College Rowing Course, Buckinghamshire: isotopic changes in human diet in the Neolithic, Bronze Age, Iron Age and Roman periods throughout the British Isles

Through isotopic investigations of directly dated human remains recovered from the Eton College Rowing Course, we examine changes in diet from the Neolithic to the Roman period. The human isotope signatures point to a diet based on C₃ terrestrial resources. A significant correlation is visible between human ??¹³C values and time, but no such trend is observed in ??¹⁵N. The animal isotope data from Eton are unevenly distributed, making it difficult to determine if the human values mirror the animal values. To assess whether the results from Eton are typical, we compare our results to isotope data from other British sites dating from the Neolithic to the Roman period. Across this time period, we see a strong correlation between the mean ??¹⁵N of the humans and that of the main domesticated herbivores, with an offset of ??4.5?? between the two. Thus, the changes in the human isotope values are likely linked to changes in the isotopic signatures of the herbivores rather than changes in the protein composition of human diets. By contrast, no clear temporal relationship is observed between the mean ??¹³C of the humans and that of the main domesticated herbivores, with an offset of ??1.4?? between the two. There is, however, a weak correlation observed between the mean ??¹³C of the humans and that of the cattle, which may account for some of the variation in human ??¹³C values between sites. The absence of a strong correlation between mean human and animal ??¹³C suggests that the primary factor influencing human ??¹³C values between sites is dietary composition. The lack of co-variation between ??¹³C and ??¹⁵N is likely to reflect the different representation of dietary macronutrients. Given that the nitrogen results suggest that the animal protein consumption patterns are similar across sites, the human ??¹³C variation between sites is likely to reflect the plant portion of the diet.