有机质地文物的化学微量分析测定方法

介绍了有机质地文物的化学分析测定方法,包括测定纤维素,木质素,蛋白质,淀粉,以及区 分动物纤维,植物纤维和人工合成纤维等方法。     

A New Methodology for the Provenance of Marble Based on EPR Spectroscopy

Fifteen years of research in investigating the characteristics of the EPR spectra of different types of white marble from several quarries in the Eastern Mediterranean has produced an accumulation of a large number of data, and much experience. Statistical treatment of these EPR data (statistical distributions and parameter correlations), has led to the selection of 10 parameters that are useful for quarry discrimination. Apart from the EPR parameters, the maximum grain size, measured with a stereomicroscope, has been found very useful. Boxplots have been found to be very useful as a first easy visual tool for evaluating the discrimination capacity of each parameter. On the basis of these results, a new methodology for determining the provenance of an archaeological sample was developed in stages, using a different pair or combination of parameters each time. In the first stage, the Penteli, Naxos, Hymettus and Proconnessus quarries are completely separated from each other. However, overlapping occurs between the parameter fields of Paros and Proconnessus, Paros and Hymettus and between the two archaic quarries of Melanes and Apollon on Naxos. If the sample is located in a non‐overlapping area, its provenance is obvious and easily determined. If the sample lies in one of the above three overlapping areas, an additional stage is necessary, in which other parameters are used to eliminate or decrease the overlap. Despite the partial overlapping of Paros with other quarries, the famous Lychnites marble of Paros, which was quarried underground, is clearly distinguished.     

Advanced manufacturing as an online case study for global geography education

Advanced manufacturing continues to be an important sector for emerging and industrialized economies, therefore, remaining an important topic for economic geography education. This article describes a case study created for the Association of American Geographer's Center for Global Geography Education and its implementation. The international machine tool industry is particularly useful for introducing students to the regional impacts of broader economic processes.     

地方综合年鉴贵在综合

本文结合编纂实践,指出目前地方综合年鉴存在着有用资料大量缺失的问题,并指出其原因主要在于综合不到位。针对这一原因作者提出了五点改进意见:一是强化对年鉴资料综合加工的责任意识,克服任务观点,纠正从组稿到编纂过程中的随意性;二是建立约束管理机制;三是加强队伍培训;四是解决好志鉴统筹运作的问题;五是多举办一些专题研讨活动。     

The search for graves with ground-penetrating radar in Connecticut

The search for unmarked and clandestine graves is a labor-intensive, time-consuming, and often frustrating task. Several geo-physical methods are available, which can be expediently used with little or no disturbances to sites, among which ground-penetrating radar (GPR) is often considered the most useful tool to delineate possible graves. This paper is the result of many years of GPR testing for unmarked graves in Connecticut. Natural and cultural conditions are considered in the failure and/or success of detection, and the use of GPR in archaeological studies.     

A biometric technique for assessing prehistoric freshwater mussel population dynamics (family: Unionidae) in north Texas

Biometry is useful for a suite of analyses relevant to zooarchaeology, which include analysis of mortality profiles, taphonomy, paleoecology, among other purposes. Here, size-age prediction models are developed for 10 freshwater mussel species found in north Texas to develop a method for studying paleoenvironmental conditions. Shell length is often used to evaluate the structures of modern mussel populations, but its use on paleozoological specimens is not feasible because complete shells rarely preserve. Instead, pallial line-to-lateral teeth length (PLL) and pseudocardinal teeth-to-pallial line length (PSP) are evaluated as proxy measures for shell length. Linear regression models based on PLL and PSP using modern mussels demonstrate that they are accurate proxies of shell length for multiple species from a variety of habitats. In addition, ontogenetic-age structures for a modern sample and for two late Holocene assemblages from north Texas are developed using PLL and PSP. These techniques are useful tools for evaluating past ecological conditions of freshwater mussel populations when large samples are available for study, which expands analytical potential of zooarchaeological studies of prehistoric unionid remains.     

Micro-sampling of human bones for mobility studies: diagenetic impacts and potentials for elemental and isotopic research

The nature of long bone formation and the pathways of interaction between bone samples and the burial environment suggest that portions of the bones disconnected from the arterial system are resistant to diagenetic alteration. Preliminary work on femurs from Early Bronze Age hunter-gatherers in Cis-Baikal, Siberia shows that the nature and progression of chemical changes in the bone matrix due to microbial attack can be analyzed using laser ablation inductively coupled plasma mass spectrometry. Intra-osteon variability in elemental concentrations and strontium isotope ratios (⁸⁷Sr/⁸⁶Sr) indicate the presence of unaltered portions of bone within diagenetically modified bone and suggest that useful data remain accessible. These biogenic signals can potentially be useful for mobility research in broad terms and the smaller timescales within an individual's lifetime (months, years), accessible therein. Laser ablation micro-sampling of femur specimens showed that intra-osteon elemental composition of Ba, Re, and Cs varied within and was correlated between multiple osteons of a single bone. Portions of chemically unaffected bone were identified within, and effectively discriminated from diagenetically altered bone tissue. Areas showing visual alterations and erratic or uncorrelated Ca and Sr elemental results also had anomalous Sr isotope ratios, suggesting diagenetic alteration in those places. Compositional and isotopic analysis of intact portions of bone supports the hypothesis that hunter-gatherer groups in Cis-Baikal made numerous major movements during their lives. Microscopic analysis of long bones clarifies aspects of biodeterioration and correlations between trace elemental results and diagenetic alteration. Micro-sampling of intact portions of bone expands the scope of available materials for research on mobility and other aspects of human past behavior.     

Assessing Protocols for Identifying Pacific Island Archaeological Fish Remains: The Contribution of Vertebrae

Three fish bone identification protocols used for determining taxa composition for Pacific island archaeofaunal assemblages are evaluated. The protocols include using the following: (1) the most commonly identified five paired cranial bones and ‘specials’ or unique elements; (2) an expanded number of cranial bones; and (3) the less common inclusion of all vertebrae. Explicit identification and quantification protocols are outlined for systematically incorporating all vertebrae which, predictably, increases the number of identified specimens for an assemblage, thus providing more bones useful for reconstructing live fish biomass (weight and length). Significantly, a range of unique archaeological vertebrae are useful for calculating minimum number of individuals. Using a well‐preserved assemblage from Henderson Island, Pitcairn Group, southeast Polynesia, numbering 6480 fish bones (concentration index = 21 580 m³), we demonstrate differences in rank‐order abundance from three taxon identification protocols. For example, when using all vertebrae grouper (Serranidae) and surgeonfishes (Acanthuridae) are more numerically equivalent than when relying mostly on cranial bones for identification for minimum number of individuals and number of identified specimens. This has important implications for making comparisons between sites or across regions where different identification protocols were used. This pilot study demonstrates that using all vertebrae for taxon identification and quantification, not just unique hypurals (terminal vertebrae) or those from sharks and rays (Elasmobranchii), should be standard practice for identifying a greater number of bones to taxon and thereby providing better reconstructions of prehistoric fishing and subsistence practices in the Pacific. Copyright © 2013 John Wiley & Sons, Ltd.     

宁波东钱湖石刻群微生物病害研究

宁波东钱湖石刻群为第五批全国重点文物保护单位,代表了南宋石刻和石雕的艺术成就。由于所处环境和气候条件的影响,石刻群微生物病害情况较严重。为了尝试筛选适宜的微生物去除方法和防止石刻表面生长微生物的材料,通过微生物种属鉴定、清除方法试验以及防止石刻表面生长微生物的材料筛选,确定了石刻上所生长的微生物种类,初步得出了东钱湖石刻群生物病害治理措施,为南方地区潮湿环境下石刻微生物防治提供了借鉴。     

Contributions to Change in the Input-Output Model: The Search for Inverse Important Coefficients

The relationship between changes in input-output structural coefficients and changes in the coefficients of the Leontief inverse is explained in a calculus-based framework. Knowledge of this relationship is essential for understanding how structural changes in one sector are transmitted across the economy, and is useful in forming updates to I-O tables given limited information. Empirically, we identify those coefficients likely to be the most important in causing inverse changes. We find that a selective and systematic updating procedure can lead to accurate updates without the need for complete data.     

A simple method for calculating the prevalence of disease in a past human population

A simple method for calculating the prevalence of disease in a past human population is described with particular reference to osteoarthritis. It can be applied to diseases other than osteoarthritis, and should prove particularly useful when studying the epidemiology of other diseases which affect numerous sites within the body and where the overall prevalence cannot be obtained simply by adding the prevalences of the individual sites, because more than one may be affected in the same skeleton. Copyright © 2004 John Wiley & Sons, Ltd.     

A Simplified Drift-Based Assessment Procedure for Regular Confined Masonry Buildings in Seismic Regions

This article presents a simplified procedure for assessing the seismic performance of existing low-to-medium rise confined masonry (CM) buildings, which are a typical construction type in Latin-America. The procedure consists of the estimation of the peak roof and first-story inelastic drift demand of CM buildings. The expected peak inelastic displacement demand is related to drift-based fragility curves, which express the probability of being or exceeding two key damage states in the masonry panels, developed from a relatively large experimental database. The proposed procedure could be very useful for obtaining rapid estimates of expected performance during future earthquake events and for assessing the seismic vulnerability of regular confined masonry structures.     

Using the Internet to Support International Collaborations for Global Geography Education

This paper reports the results of a pilot study that evaluated a prototype instructional module designed to support international collaborative learning in the World Wide Web. The module, Migration, was tested at four higher education institu tions in the United States, Canada, and Australia. Students valued the opportunity to learn global geography by collaborating electronically in multinational teams, yet many students complained about confusing instructional procedures and uncooperative team members. The results of the module evaluation provide useful suggestions for managing pedagogical issues related to the process of online international collaborative learning.     

The use of geosynthetics for archaeological site reburial

Abstract

Applications of geosynthetic materials in reburial practice include geotextiles for separation, filtration and protection (cushioning); geomembranes and geosynthetic clay liners for infiltration control; geonets and geocomposites for sub-surface drainage; and geocells for erosion control. Mechanically stabilized earth reinforcement using geocells, geogrids and geotextiles can also provide substantial benefits for reburial projects by reducing lateral earth pressure against backfilled structures. Other aspects of modern geotechnology that may be useful for reburial projects include micro-piles and soil nailing for foundation and excavation support and evapotranspirative capping technology to establish the depth of soil cover required to isolate a structure or artefact from moisture and temperature fluctuations. Optimal application of these geotechnologies requires an understanding of the basic engineering principles associated with their implementation, as well as knowledge of the factors influencing archaeological site preservation.     

文物裂隙趋势预测模型研究

露天不可移动文物常年遭受风化侵蚀和人为破坏,保存环境十分恶劣,掌握文物健康状况并进行趋势预测,是"预防性"文物保护工作的重要内容。文物健康监测数据具有不确定性和贫信息性,传统概率统计方法和模糊数学方法不能满足预测要求。针对文物裂隙数据的特点,以陕西唐顺陵天禄石刻为研究对象,提出了采用灰色系统理论来预测文物裂隙发展趋势,建立了裂隙GM((1,1)模型和Verhulst模型,分别确定了灰色模型的灰色作用量和发展系数,并且对唐顺陵石刻文物的裂隙进行了预测。实验用前12个月的裂隙月均值,对随后的7个月的裂隙进行了定量预测,发现天禄石刻的裂隙有缓慢增大的趋势。与同期真实裂隙监测值相比,GM((1,1)模型和Verhulst模型预测值的平均相对误差满足裂隙预测精度要求。研究结果为文物健康趋势研究提供了定量分析的理论依据。     

Social learning as an analytical lens for co-creative planning

This article highlights the psychological dimension of social learning. Insights from psychology address the interrelated role of personal and group dynamics in social learning. This can provide a useful starting point for a rewarding use of social learning as an analytical tool in co-creative planning. Such an approach to social learning proves beneficial to (i) identify both positive and negative potential effects of social learning, (ii) untangle hidden power relationships at play at individual and small group levels in relation to social psychological factors, and (iii) discern the role of individuals and small groups within their larger contexts. The findings are empirically illustrated with a case of incremental urban development in Groningen, the Netherlands.     

Waiting for Miracles: The Commercialization of Urban Water Services in Zambia

This article focuses on the commercialization of urban water services in Zambia. It aims to demonstrate the tension between cost recovery and service extension when water sector reforms combine investment cuts with price increases. It is argued that in low‐income economies where infrastructure limitations are serious and poverty is widespread, heavy reliance on ‘tariff rationalization’ with low levels of investment can lead to reduced access to water and render water charges unaffordable. Reforms to public services can prove futile in the absence of upfront resources for investment in the restoration and extension of the existing infrastructure. In many ways, Zambia typifies other low‐income economies; this study thus offers useful lessons for them.     

砂岩文物加固材料与实验室工艺研究

风化砂岩文物的加固是文物保护的重要课题。在本研究中,选择与严重风化的云冈石窟石质文物材质相同的新鲜砂岩为研究对象,采用化学加速风化方法将石质试样进行风化模拟处理,使其风化程度接近于石窟文物本体。利用4种硅酸酯类加固材料和7种实验室工艺条件,对风化模拟石质试样进行加固处理。对处理后的石质试样进行渗透深度、色差、耐盐性、耐紫外老化、无侧限抗压强度性能测试,评估各材料与实验室工艺加固效果。经研究表明:不同材料对风化砂岩均有加固效果,其中硅酸乙酯及其低聚物材料加固作用明显;同种材料、不同实验室工艺条件下加固效果却不一样,减压浸渍法实验室工艺的加固效果最大。本工作结果将为砂岩类石质文物现场加固保护提供科学基础数据。     

Reducing Toxic Chemical Releases and Transfers: Explaining Outcomes for a Voluntary Program

Relatively little is known about the possibilities and limitations of voluntary public programs. The so-called 33/50 Program for reducing releases of certain toxic chemicals into the environment provides a useful instance for examination. In an investigation of toxics-reduction outcomes, with states as units of analysis, economic and policy variables help to explain the results. In particular, channels and approaches used In communicating policy intentions are related to outcomes. Voluntary programs can make a difference, but the details of execution, including the extent and nature of field efforts, influence outcomes.