薄膜试片测试法试片图像采集分析系统

薄膜试片测试法是一种能够全面有效地对博物馆藏展材料进行评估筛选的测试方法,对其腐蚀现象进行图象采集及进行数据化分析能够得到更为客观准确的测试结果.本工作对应该测试法设计了专门图像采集的硬件装置,采用密闭光源和彩色工业摄像机,可以得到清晰的试片图像.软件系统将采集图像、打开原始图像、图像分割处理、材料分级评价等功能模块化,并根据具体功能设计实现了基本应用的可视化界面.实验表明,该系统能够快速、准确地对藏展材料对试片的腐蚀现象进行数据化分析,使藏展材料的评估分级由人工目测走向计算机视觉计算,具有快速、客观、误差小等特点.     

粮食安全与中国耕地关系的动态调整——基于1980～2004年中国虚拟耕地及其贸易的研究

虚拟耕地是指从具体农产品实物中抽象出来的耕地资源消耗,有了这样一个概念,作为一种不可移易的资源的耕地就可以虚拟地依存于具体农产品的贸易中,并成为一种可以在地区或国际间进行流动和贸易的虚拟资源。对1980～2004年中国虚拟耕地及其贸易量的分析表明,新时期以来,中国粮食虚拟进口耕地和出口耕地对国际市场的依存度都较小;目前中国虚拟耕地贸易最重要的主体已经由粮食让位于油料,影响虚拟耕地数量的主要因素已经不是粮食安全而是生活质量,这是一种更高层次的粮食安全。粮食安全的政治性决定了粮食的战略产品性质,因此任何时候都不能放松粮食生产,但中国应该动态把握耕地的有机调整。     

The use of dental crown heights for constructing age profiles of red deer and similar species in archaeological samples

The analysis of dental crown heights in a sample of known-age American Red deer (known in America as “elk”) has permitted the derivation of formulae for the prediction of age from crown height. The ages predicted from crown heights closely approximate true ages, when both predicted and true ages are grouped into broad, but still useful age classes. At least for the Red deer or “elk” dP₄, M₂ and M₃, age prediction formulae very similar to the empirically derived ones may be constructed by making certain hypothetical assumptions about the nature and rate of crown attrition. This suggests that these assumptions may be used to construct age prediction formulae in situations where an empirical relationship between age and crown height has not been or cannot be established. With certain provisos noted in the text, the age prediction formulae that result will probably provide reasonably reliable age profiles for the numerous ungulate species whose teeth are similar in structure to those of Red deer or “elk” and at least as hypsodont.     

Relict Soils and Early Arable Land Management in Lofoten, Norway

Relict arable soils dating fromc.AD700 provide an opportunity to identify early arable land management practices in the agriculturally marginal landscapes of the Lofoten archipelago, northern Norway. Synthesis of field survey and soil thin section micromorphology supported by image analysis suggests that there was deliberate management of erodible sandy soils in sloping locations to create small areas of cultivation terrace, with a range of materials used as soil amendments to stabilize the accumulated soil and enhance fertility. Small areas of sandy soils in more gently sloping locations were also cultivated, again with a range of materials used as amendments and which contributed to a significant increase in soil thickness. The last phase of cultivation commenced during the late 1800s and involved the reclamation of wetter, peaty soils by spade. These patterns of arable land management are repeated in different parts of Lofoten and indicate that despite the climatic and economic marginality of arable activity in Lofoten, land management practices were developed and applied to permit barley production from small areas.     

河南石窟寺石雕色彩历史及现状

文章在现状调查的基础上,根据历史资料与同时期石窟寺的色彩对比,再应用X-射线衍射(XRD)、电子能谱(SEM)等分析仪器,对彩塑的制作材料及其工艺进行了分析研究,为进一步的修复材料及工艺的筛选提供科学依据.     

A First Approach to Links between Animals and Life on Board Sailing Vessels (1500–1800)

Long voyages required serious logistics. Onboard meat supplies were analysed from animal remains found in shipwrecks. Here we present a bibliographical synthesis of results obtained from the study of 33 published shipwrecks in order to assess the importance of the presence of animals aboard and to underline questions still unanswered. © 2011 The Author     

“Copper people” of the bronze age: The reconstruction of their health and social status

“After you shall arise another kingdom inferior to you, and yet a third kingdom of bronze, which shall rule over all the earth” Dan. 2: 39 The Metal Age opened up new prospects for mankind and led to the emergence of a new category of professionals – miners, founders, smiths. With relation to the Bronze Age, these may be called “copper people.” The article explores new methods that can be used to identify their skeletal remains in museum collections. Based on biological data, certain aspects of the lifestyle of a male (presumably a smith) buried in an Abashevo collective grave at Pepkino, the Republic of Mari-El, Volga Federal District, and of other individuals buried in the same grave are reconstructed. Morphological, paleopathological, radiographic, and computer tomography examination of skeletal remains, as well as the results of histological, atomic absorption, and isotopic analyses of bone tissue provide information concerning diet, physiological stress, beginning of professional specialization, and the effects of heavy physical stress on their health status.     

The metal compositions of a series of Geistingen-type socketed axes

The bulk metal compositions of twelve socketed axes of the Geistingen type are determined in a fully non-destructive manner by neutron resonance-capture analysis (NRCA). These axes named after a hoard found in Geistingen, a Belgian village along the Dutch-Belgium part of the river Meuse, are considered in the literature to be votive or prestigious objects from the Late Bronze Age. They contain considerable amounts of antimony, arsenic, silver and nickel, adding up to 6–16 wt%. Seven axes have no detectable, or little tin; the other five objects contain 6–12 wt% tin. The compositions of the Geistingen axes are evidence for a further example of the return to the Early Bronze Age practice of smelting fahlore related minerals.     

Networks of Adjacent Action Situations in Polycentric Governance

Within the Institutional Analysis and Development (IAD) framework, the concept of an action situation generalizes a game to allow for endogenous changes in its rules. This article re‐visits this core concept to explore its potential for serving as the foundation for a systematic approach to the construction of more elaborate models of complex policy networks in which overlapping sets of actors have the ability to influence the rules under which their strategic interactions take place. Networks of adjacent action situations can be built on the basis of the seven distinct types of rules that define an action situation or by representing generic governance tasks identified in related research on local public economies. The potential of this extension of the IAD framework is demonstrated with simplified network representations of three diverse policy areas (Maine lobster fisheries, international development assistance, and the contribution of faith‐based organizations to U.S. welfare policy).     

Governance Structures: Using IAD to Understand Variation in Service Delivery for Club Goods with Information Asymmetry

Club goods with information asymmetry are frequently provided through mixed economies of for‐profit, nonprofit, and public providers. Theory explaining mixed economies relies on sector to classify providers based on assumptions that sector‐level differences in how organizations either distribute or reinvest profit will affect behavior. However, this classification is overly broad and is not able to adequately capture the diversity of providers of these types of goods. The author utilizes the Institutional Analysis and Development framework to identify six “governance structures” in the for‐profit and nonprofit sectors. Governance structures are constitutional‐choice level rule variations in who has the power to make rules. I argue that there are two types of power that affect rules: (1) concentration of constitutional‐choice level decision‐making power (i.e., how many principals) and (2) proximity of monitoring and enforcement of those rules. The extent to which the constitutional rules actually guide service delivery outcomes depends on a nested rule environment. Only if there is consistency across three level of rules (constitutional, collective, and operational) can we connect sector to outcomes. The empirical reality of service delivery, particularly for club goods with information asymmetry, is far too complex for simplistic assumptions linking profit distribution or its reinvestment to outcomes. This article directs further research toward building contingent theory, with if/then conditions, based on empirical research.