An Assessment of the Role of an Open Shelter in Reducing Soiling and Microbial Growth on the Archaeological Site of the Bishop’s Palace,Witney, England

Two sets of twelve Portland limestone tablets were attached to carousels outside and under the open, lightweight shelter at Bishop’s Palace (Witney, England) for 18 months to assess the influence of shelters on soiling and microbiological growth on stone. At the start, and at 6-month intervals, tablets were analysed using microscopy (optical and SEM), colour measurement (spectrophotometry), weight change measurement and salt content determination (ion chromatography). Concentrations of NO₂ and SO₂ were also monitored for a month using diffusion tubes. In addition, results were compared with those obtained by the UK National Materials Exposure Programme (NMEP) on chemical weathering rates. Differences in soiling and biological growth on sheltered and unsheltered samples, and their influence on limestone decay were established. The shelter is likely to reduce biological growth by modifying the micro-environmental conditions. However, it may also exacerbate dust deposition, which might increase decay rates in the long-term.     

Assessing the Scale and Pace of Large Shell-Bearing Site Occupation in the Prince Rupert Harbour Area,British Columbia

Methodological advancements in geoarchaeology and spatial and chronological modeling are opening new avenues to interpreting large coastal shell-bearing sites. We document the developmental histories of two such sites around Prince Rupert Harbour, Canada, using systematic percussion coring, intensive radiocarbon dating, and 3D surface mapping with Total Station and LiDAR. We also re-analyze a third site (Boardwalk/GbTo-31) excavated and radiocarbon dated in the 1960s, 1970s, and early 2000s using archival field notes, site maps, and stratigraphic profiles georectified using LiDAR. We map the natural landform beneath the sites and document the degree to which people physically modified landforms through the deposition of massive shell accumulations. We model site development through time and space and use accumulation rates and OxCal modeling to test for intentional deposition events. All three sites demonstrate complex and heterogeneous occupation histories. At each we identify instances of very rapid deposition that effectively terraced and extended parts of the natural landform to create places for constructing houses, though these episodes take place within longer histories of slower quotidian deposition. The anthropogenic modifications to the coastline in this area are the result of these mixed processes associated with long histories of occupation.     

重商观念与晚清利权意识的演进

在近代中国,利权概念的核心内涵是经济主权,是对经济独立权的诉求。利权意识在20世纪初年的变化加重了晚清重商观念内在矛盾。利权意识的强化虽显示了晚清经济民族主义的勃发,但也展现了重商观念存在着偏差和不成熟的成分。     

Exponentially decreasing tooth growth rate in horse teeth: implications for isotopic analyses

A range of archaeological and palaeoclimatic studies use isotopic analyses of ungulate hypsodont tooth enamel. Such studies commonly assume a constant growth rate, though this has not been fully tested. Here, we use stable isotope analyses of sequential enamel samples to study horse tooth growth. We fit the data using models corresponding to constant and exponentially decreasing rates of growth, and compare the results to metrical data showing the geometry and timing of apposition. The results indicate enamel apposition and maturation advances at an exponentially decreasing rate. An understanding of this variable growth rate is crucial for interpreting isotopic data from equid teeth.     

试析古希腊海事贷款高利率成因

海事贷款是古希腊海上贸易的主要“融资”形式之一。与其他形式的货币借贷相比,它的一个主要特征是利率高。公元前4世纪古希腊海事贷款的高利率主要受到了海事活动风险巨大、借贷双方身份特殊、资金供求关系紧张及海事贷款运作的特殊性等因素的影响。海事贷款古希腊海上贸易中起着“融资”和“保险”的双重作用。     

A tale of two scales, or the two geomorphologies

Since the 1960s the analysis of small-scale surface processes has been the dominant approach in geomorphology, the previous focus on regional-scale landscape evolution having been largely abandoned as a result of the lack of knowledge of processes and process rates at the relevant temporal and spatial scales. It has recently been acknowledged that small-scale, surface process geomorphology alone is unable to provide an understanding of long-term landscape development, both because of the significance of tectonics, and because of the important role of contingency at the large temporal and spatial scales involved. But the major advances in geochronological techniques and numerical modelling of landscape evolution that are now revolutionizing our understanding of long-standing questions of landscape evolution have been largely developed and applied by researchers from outside the traditional geomorphology community. As a result, two distinct communities of researchers have emerged concerned with different scales of landform analysis, but the progress of geomorphology will be best served by greater interaction between them.     

Reflections on Ukraine's Current Economic Dilemma

A prominent specialist on economic transition in the former Soviet Union presents an overview of Ukraine's economic dilemma in the aftermath of the most recent elections in that country. The author, a former economic advisor to Ukraine's government and co-chair of the UN's Blue Ribbon Commission for Ukraine, relates his insights into the causes of three acute problems (inflation, corruption, and the lack of structural reforms). Focusing on the state of economic affairs in 2008, the paper, which includes data on economic growth and exchange rates, discusses inter alia the hryvnia's peg to the dollar and the potential consequences of rising food and commodity prices. Included in the analysis is a comparison with Russia. Journal of Economic Literature, Classification Numbers: E58, E60, O52, P26. 34 references.     

The Role of Future Discounting in Subsistence Decisions: The Case of Hohokam Agave Bajada Cultivation

This article demonstrates the relevance of future discounting behavior to studies of prehistoric subsistence strategies. The case study of Agave spp. bajada cultivation among the Classic Period, a.d. 1150–1450, Hohokam of southern Arizona illustrates how slight discounting of future rewards can significantly alter agriculture investment strategies. Despite a higher kcal/hour return than maize agriculture, agave cultivation lessened or ceased in several communities during a time in which intensification would be predicted due to inferred subsistence stress. We surmise the decade-long maturation of agave made it unattractive relative to more immediate return resources in any context that presented risks to land tenure. The cessation of agave cultivation can be understood on two levels of explanation. The long-term investments required by agave and tendency to discount future rewards are the ultimate causes. Political and social instability during the tumultuous Classic period, causing increased insecurity in land tenure, are the proximal causes.     

Maps and the assessment of parish rates in nineteenth‐century England and Wales

Abstract

This paper reviews the role of maps in the assessment of rates levied for the relief of poverty in nineteenth‐century England and Wales and examines the relationships between tithe maps and parochial assessment maps both in general terms and with specific reference to Poor Law unions in the county of Kent. An appendix lists 207 parochial assessment maps made in connection with the levy of poor rates which are extant in the public archives and libraries of England and Wales. Other ‘lost’ examples of this genre awaiting discovery in parish churches and vestries will undoubtedly add to this small but important constituent of the corpus of English and Welsh cadastral maps.     

The impact of crime on firm entry

The article investigates the effect of crime on firm entry rates in Italian provinces over the period 2007–2016. The extant literature focuses mainly on the relationship between crime and the sorting of new businesses. The present paper contributes to this stream of work by estimating the effect of crime on the overall propensity to engage in entrepreneurial activities across a national territory. We measure the extent to which property and violent crime affect firm entry rates using an instrumental variable approach in which the instrument for criminal activity is the effective abortion rate. Our findings suggest that crime has a negative, sizable impact on firm entry. The results are robust to alternative instrumental variables and firm entry indicators. This empirical exercise emphasizes the need to consider loss of new business activities as a downstream effect when computing the social costs of crime.