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31.
Traditional approaches to intrasite spatial analysis in archaeology have concentrated on identifying associations among classes of artifacts over a site surface. This focus has tended to ignore the possible effects of contextual constraints on inter-class relationships, for example the “gravity effects” of hearth features on object deposition. Consequently, sets of co-occurring artifact classes defined in space are usually ascribed behavioural significance as “tool kits”, even though they may represent unrelated objects simply discarded into the same spatial location. This paper attempts to illustrate this problem through contextual integration of artifact and feature distributions. Quantitative methods are employed to carry out contextual spatial analysis of artifact distributions from the Upper Palaeolithic rockshelter site Le Flageolet I (Dordogne, France). Results indicate that associations among artifact classes in space might be constrained by feature locations at Le Flageolet I and that contextual interpretations are warranted for the observed inter-class relations.  相似文献   
32.
以2014-2016年长三角135个区县的房价为基本数据,通过数据的空间提取、分异指数测算、热点分析等方法,对长三角县域的房价空间分异格局进行了研究。结果表明:长三角房价空间分异格局与其城市体系结构基本一致,呈现出多极核分布特征;长三角整体的房价空间分异的不平衡性正在加剧;冷热点的空间分布格局相对稳定,热点的数量波动下降,冷点的数量波动上升。在此基础上,遴选出经济资源、人力资源、社会资源和行政资源要素类型,利用多元线性回归模型分析了长三角房价空间分异的影响因素。  相似文献   
33.
    
Using data from the third National Family Health Survey (NFHS-3) on currently married fecund women who have had at least one birth during 2001–2002 and Cox-proportional hazard models, this study examines the less researched association between women's autonomy and birth-to-conception intervals in India. It also examines whether women's autonomy mediates or moderates the relationship between education and birth-to-conception interval. Our results indicate that after adjusting for demographic and socioeconomic factors, women's autonomy was a significant predictor of birth-to-conception intervals, with higher autonomy positively associated with larger birth-to-conception intervals. Education of women was also independently associated with longer birth-to-conception intervals. However, this study did not provide any support to the general perception that women's autonomy mediates the association between women's education and birth-to-conception interval. Women's autonomy rather than being a mediator acted as a moderator in this association. Policy measures to increase the spacing between births should emphasise not only improving the education of women but also their autonomy.  相似文献   
34.
    
The economic restructuring and the new economic conditions that arose out of the waves of globalisation has resulted in significant impacts on the labour markets, which in turn have led to social transformation. The characteristics of the new economic structure and the changes in demand for labour are important in the dispersal of the benefits of competitiveness among the different social groups. Several issues that shape the labour markets, such as education, gender, division of labour and the social organisation of work, are important in redefining the impacts of economic restructuring on the income and well‐being of the different social groups. The aim of this paper is to discuss the role of social capital in the adaptation of individuals to the conditions imposed by the recent economic changes and restructuring while also revealing other impacts of this process on the people. In order to find out to what extent social capital contributes to the challenges posed by the ongoing economic transformation and the continuing economic crisis on the people and households, an empirical work based in Izmir (Turkey) is presented in this paper.  相似文献   
35.
    
Regional economic development competition can be inefficient and destructive because decisions by one governmental unit can impose both externalities on its neighbors. Collaborative networks of multiple stakeholders within and across jurisdictions are an increasingly crucial component of regional economic development. In this article, we focus on the emergence of voluntary and self‐organizing network relationships among local governments to address economic development concerns. The motivations and decisions of local actors play a critical role in shaping and implementing regional collaboration. On a micro level, the collaboration choices are shaped by three primary factors: the transaction costs reflected in the configuration of relationships in which an actor is embedded; the organizational similarities (homophily); and the resource dependencies that shape the local actors' preferences for forming relationships with other specific actors. We utilize an exponential random graph model (ERGM) to test hypotheses regarding the most prominent observed patterns of network relationships within and across different organizational sectors. The results demonstrate that both reciprocity and social clustering structures are preferred by both government and nongovernment organizations. These results suggest that interorganizational collaboration for economic development requires more than simple exchange relationships. Rather, network actors may be better served by participating in a densely clustered network that is capable of maintaining credible commitments to collective solutions.  相似文献   
36.
    
A key assumption in agglomeration theory is that knowledge‐based firms benefit from knowledge spillovers in cities. Cities however may have different locations in the national context, such as embedded in a network of nearby cities or relatively isolated. We examine social networks employed by university spin‐off firms in urban environments that contrast in such a way, namely, Delft (the Netherlands) and Trondheim (Norway). A set of growth models is explored with a focus on characteristics of social networks through which knowledge is acquired, such as tightness, strength and spatial orientation. The networks appear to differ in various respects, except for a positive influence on growth of heterogeneity in the social background of partners. The largest difference is observed in strength of relationships: an increase in strength tends to hamper growth in Delft, while it tends to enhance growth in Trondheim.  相似文献   
37.
Remains of anadromous Pacific salmon and trout (genus Oncorhynchus) are common in archaeological sites from California to Alaska; however, morphological similarity generally precludes species identification, limiting the range of questions that salmonid remains can address in relation to past human use and ongoing efforts in conservation biology. We developed a relatively simple, rapid, and non-destructive way to classify salmon and trout vertebrae from archaeological contexts to species using length, height and the ratio of length to height. Modern reference material was obtained from all seven anadromous Oncorhynchus species native to the west coast of North America. A minimum of ten adult Chinook (Oncorhynchus tshawytscha), chum (Oncorhynchus keta), coho (Oncorhynchus kisutch), pink (Oncorhynchus gorbuscha), and sockeye salmon (Oncorhynchus nerka) and cutthroat (Oncorhynchus clarki clarki) and steelhead trout (Oncorhynchus mykiss) were skeletonized and vertebra length and height were measured. Morphometric analyses compared species classification success based on Linear Discriminant Analysis (LDA), Classification and Regression Trees (CART), and randomForest, with CART performing the best. Classification analyses used all seven species individually, but because of considerable overlap among several species we also conducted analyses on four species groupings. We assigned Chinook salmon and cutthroat to their own groups based on their dissimilarities from each other and the other species. The remaining species were divided into two group complexes (a) chum, coho, and steelhead; and (b) pink and sockeye. When we grouped species according to similar morphology, CART overall success rates increased, ranging from 92 to 100%. Individual species with the highest successful classification rates using CART were Chinook salmon and cutthroat, from 92 to 100%, respectively. We applied our classification to an assemblage of ancient (1000–3000 year old) salmonid vertebrae from the Swiftwater Rockshelters excavations on the upper Wenatchee River in Washington State, U.S.A.  相似文献   
38.
    
We investigate the spatial extent of agglomeration economies across the wage earnings distribution using economic mass (total employment) in four distance bands around each individual’s establishment in a quantile regression framework. We control for observable and unobservable individual and establishment characteristics. Remaining endogeneity in the model is assessed with a set of instrumental variables. Results indicate a positive effect of economic mass on wage earnings up to 25 km away from the establishment. The spatial extent of agglomeration economies is similar across the wage earnings distribution. However, increases in economic mass shift the wage earnings distribution in a nonsymmetric way.  相似文献   
39.
    
A common problem in forensic anthropology is the pair‐matching of left and right bone antimeres. Several osteometric sorting models have been proposed in the last 20 years, with a recent acceleration in new methodological articles bringing sometimes contradictory results or recommendations. These debates demonstrate the need for a statistical tool both accurate and easily applicable by the final user. We present here an approach based on quadratic discriminant analysis (QDA). This approach is evaluated on antimeric pairs of humeri and femora from the openly available Goldman Data Set and compared with two classical and previously published methods for osteometric pair‐matching, based respectively on linear regressions and t tests. It is shown that QDA globally outperforms existing solutions for reassociating those long bones, in particular by rejecting fewer true bone pairs at the classical α level of .10. The accuracy of all three methods is analysed through receiver operating characteristic curves to assess the influence of the choice of a decision threshold. The application on archaeological commingled remains of pair‐matching models learned on a modern reference multipopulation sample is discussed. Finally, an R package containing the functions used for this study, bonepairs, is publicly available online. This ensures the full replicability of results and an easy use of the new method introduced here.  相似文献   
40.
The recent financial and economic crisis had substantial but spatially differentiated impacts on growth. However, there is still a lot left to be understood about the local aspects of the crisis. One of these aspects is its socio-economic consequences. This paper investigates local socio-economic change to Danish towns from 2008 to 2013, with a focus on the impact of local labour market (LLM) structures on change. Socio-economic change in towns is measured both directly as mean income and employment growth, and indirectly as population and human capital growth. The paper relies on micro-data and uses robust regression to generate results. Several findings are presented, but the two main conclusions are: first, the LLM structures of towns still influence local socio-economic development; and, second, towns experience better socio-economic development if they are in close proximity to a larger labour market and/or have a large ratio of commuters in the working population.  相似文献   
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