Effects of a nineteenth century below-knee amputation and prosthesis on femoral morphology

Access to the lower limbs from a historically-identified nineteenth century below-knee amputee who had worn a hardwood ectoprosthesis for an extended time prior to death provides a natural experiment for investigating the morphological and histological effects of the resulting altered mechanical environment. Osteometry (measuring total bone size), cross-sectional geometry (bending and axial rigidity) and histology (bone turnover rate) are assessed. A reduction in size and geometric strength, along with an increase in cortical bone turnover, indicate that the midshaft and distal regions from the affected femur were partially shielded from functional strain. Structural compliance of the prosthesis, probably originating from design and material of manufacture, to some degree preserved the mechanical and morphological integrity of the proximal subtrochanteric region. The results of this case study are consistent with contemporary theory in skeletal biomechanics, for example, Frost's Mechanostat, which suggests that insufficient functional strain promotes intracortical remodelling and endosteal expansion.     

Dogs,jaws, and other stories: Two symbolic objects made of dog mandibles from southeastern Europe

The relationship between people and dogs has its beginnings in the Palaeolithic and extends to contemporary times. This paper explores the role of dogs in Eneolithic communities from the Balkans, with a particular focus on two dog mandibles which were discovered in House No. 14 at Sultana-Malu Ro?u (ca. 4600?–?3950 b.c.) in Romania. The two artifacts belong to different excavation levels. The first mandible was identified in the foundation trench which marks the beginning of the house's lifecycle; the second was found in the abandonment level of the house, marking the end of its lifecycle. Archaeozoological, technological and functional analyses demonstrate the unique character of these prehistoric artifacts, telling the stories of those who used, sacrificed and abandoned them.     

Diet and the aetiology of dental calculus

The aetiology of dental calculus formation is not fully understood, but it is known that a number of factors play a role. Generally, anthropologists have overlooked the role of other causative factors in the formation of dental calculus, attributing it almost exclusively to diet, particularly protein consumption. Anthropologists have also oversimplified the role of diet in the formation of dental calculus. This may be due to a general paucity on research on dietary effects on calculus formation, as well as a lack of integration between anthropological and non‐anthropological data. Copyright © 1999 John Wiley & Sons, Ltd.     

The application of 3D‐microprofilometry as a tool in the surface diagnosis of fossil and sub‐fossil vertebrate hard tissue. An example from the Pliocene Upper Laetolil Beds,Tanzania

Non‐contact optical 3D‐profiling instruments are often used in the study of surface modifications on fossil mammalian bone. The advantage of optical laser scanning for the study of fossil and sub‐fossil bone is its non‐contact nature, allowing the investigation of fragile and poorly preserved surfaces. The high resolution and fast measuring rate of this method make it an alternative to scanning electron microscopy (SEM) investigation if topography is to be visualized. This study analyses clusters of incisions in a suid humeral fragment from the Pliocene Upper Laetolil Beds. The marks show a characteristic crest structure that is also frequently found in mandible marks produced by the Australian termite species Mastotermes darwiniensis. The marks from the Laetolil Beds are, therefore, interpreted as also being caused by insect mandible action. An as yet unknown large insect species capable of modifying bone with their mandibles is thus postulated in the palaeohabitat represented by the hominid‐bearing Upper Laetolil Beds. Copyright © 2001 John Wiley & Sons, Ltd.     

Positive responses,uneven experiences: intersections of gender,ethnicity, and location in post-tsunami Sri Lanka

This article examines the role of women in post-tsunami livelihoods recovery in two tsunami-affected villages in the Hambantota District, South Sri Lanka. It considers four key livelihoods recovery strategies involving women, revealing their immense capacity to overcome socially constructed disaster impacts. Their ability to respond positively is grounded in specific geographic and cultural contexts, making location and ethnicity of profound consequence. Although pre-existing ethnic backgrounds, influenced by religious and patriarchal structures, are critical indicators of the uneven ways in which women engaged in livelihoods recovery, the tsunami generated new patterns of cultural practice. The article adds to research that goes beyond the simplistic representation of women as undifferentiated ‘victims’ in post-tsunami Sri Lanka. It stimulates discussion on the lived experiences of intersectionality in feminist geography, and emphasizes the broader relevance of the study for understanding multiple and transforming positionalities that constitute the post-disaster lives of women in divergent socio-political contexts.     

Morphological distinctions between the mandibular teeth of young sheep, Ovis, and goats, Capra

Morphological distinctions between the mandibular teeth of young sheep (Ovis) and goats (Capra) are described, and their value in the study of bone samples from archaeological sites is briefly discussed.     

The process,location, and history of Hohokam Buff ware production: some experimental and analytical results

A distinctive red-on-buff pottery, found throughout central and southern Arizona, is a hallmark of prehistoric Hohokam culture. To manufacture it, Hohokam potters used a complicated recipe and controls for firing to chemically manipulate their clay and produce a light-colored fabric on which to paint their red designs. In this study, firing experiments and ceramic analysis are used in conjunction with excavation evidence to evaluate competing ideas about the buff ware manufacturing process, investigate where the pots were made, and model the developmental history of red-on-buff production.     

Burnt bones and teeth: an experimental study of color,morphology, crystal structure and shrinkage

Burnt osteological materials are one focus of interest in forensic, archaeological, and palaeontological studies. We document the effects of experimental, controlled heating on a sample of modern bones and teeth from sheep and goats. Four aspects of heating specimens to between 20 and 940°C were considered: color, microscopic morphology, crystalline structure and shrinkage. Our results show that changes in both color and microscopic morphology of burnt bones and teeth can be divided into five stages each of which is typical of a particular temperature range, although the stages based on color do not correlate exactly with those based on micromorphology. These stages can be used to determine (1) if specimens of unknown taphonomic history were burnt, and (2) the maximum temperature reached by those specimens. In addition, powder X-ray diffraction studies show that heating causes an increase in the crystal size of hydroxyapatite, the major inorganic component of bones and teeth. This fact in conjunction with the microscopic morphology can be used to confirm deduced heating to 645°C or more. The data on shrinkage are analyzed to yield a polynomial expression that summarizes percentage shrinkage as a function of the maximum temperature reached by bones. Thus, the original size of specimens can be reconstructed within limits since the maximum temperature reached by the bones can be deduced on the basis of color, microscopic morphology and/or powder X-ray diffraction patterns. Finally, because there is a discrepancy between the maximum heating device temperature and the maximum specimen temperature, caution must be exercised in distinguishing between the effects of man made and natural fires.     

Compensatory bone remodelling in moose: a study of age,sex, and cross‐sectional cortical bone dimensions in moose at Isle Royale National Park

We studied interrelationships among age, sex, and cross‐sectional cortical bone dimensions using quantitative computed tomography (QCT) scans of metatarsal bones of 180 moose (Alces alces) that died in Isle Royale National Park, Michigan. As a large‐bodied quadruped with demanding ecological constraints on movement and behaviour, a moose experiences different weight‐bearing and mechanical stressors than humans, to whom most existing studies of mechanical adaptations of bone pertain. In moose, both sexes showed significant subperiosteal expansion and an increase in medullary area, with an overall increase in cortical bone area over time. Female moose did not exhibit cortical thinning or reduction in cross‐sectional area with age, rather they showed an increase in cortical bone area with periosteal apposition exceeding endosteal resorption, similar to the males. We also found that moose undergo changes in bone geometry through remodelling of bone similar to humans, suggesting a compensatory mechanism for increasing bone strength under conditions of decline in bone mineral density with age. Copyright © 2002 John Wiley & Sons, Ltd.     

Assessing the reliability of criteria used to identify mandibles and mandibular teeth in sheep, Ovis, and goats, Capra

Criteria developed to distinguish between the mandibles and mandibular teeth of sheep and goats are evaluated using modern specimens from the collections of the National Museum of Natural History and the Field Museum of Natural History. Certain teeth prove to be quite reliable in this regard (dP3, P3, P4). Other dental elements, however, are not reliable and should not be used in dental based identifications of these closely related species (dP4, M1, and mandibular bones). Overall, the identification of sheep dentition using these criteria is more reliable than it is for goats. However, the generally greater likelihood of incorrect identification of goat teeth and mandibles means that specimens identified as sheep are likely to contain high proportion of misidentified goats. Both the proportion of remains that can only be classified as ‘Ovis-Capra’ and the proportion of incorrectly identified teeth and mandibular bones varies with age, with identifications of younger and older animals less reliable than those of animals in the 1.5–6 year age range. Reliability of identifications increases when more criteria and more elements are used. Identifications based on whole mandibles with complete tooth rows are quite reliable. However, the proportion of specimens likely to be classified as ‘Ovis-Capra’ also increases in whole mandible identifications, especially in goats. Systematic differences in the proportions of indeterminate and incorrect identifications have a significant impact on species-level dentition-based harvest profiles. Recommendations are made for the use of dentition and long bone based harvest profiles in the study of sheep and goat exploitation strategies.     

Job polarization in the new economy in Danish cities: location,size, and the role of the public sector

ABSTRACT

In this paper we examine the geographic patterns of employment growth and employment polarization in small and medium-sized cities (SMCs) in Denmark during the rise of the new economy. The geography of employment polarization in Danish cities is examined using register-based employment data on occupations and wages divided into the public and private sectors in the period 1993–2006; it therefore covers a long period of transformation and growth in the Danish economy. We conclude that employment growth is characterized by employment polarization combined with growth in low- and high-wage employment and a decline in medium-wage employment. However, these patterns of polarization differ across the public and private sectors, as well as by geography. While local labour market (LLM) size, city position and city specialization influence the geography of private-sector employment growth and polarization, municipal population and composition influence the geography of public-sector growth patterns across wage levels. Finally, public and private employment are positively associated within SMCs, predominantly driven by the positive association between public employment and private-sector low-wage employment. However, public employment is not associated with an increase in private low-wage employment in more remote areas.     

Lifestyle,occupation, and whole bone morphology of the pre‐Hispanic Maya coastal population from Xcambó, Yucatan,Mexico

The present bioarchaeological study examines the external diaphyseal geometric properties of humeri, radii, femora and tibiae of the Classic period skeletal population of Xcambó, Yucatan, Mexico. The diaphysial proportions are evaluated using a biomechanical approach together with data from the material context and other osteological information. Our intent is to provide new answers to questions concerning lifestyle, domestic labour division and subsistence strategies of this coastal Maya settlement that was inhabited from the Late and Terminal Preclassic (300 BC–350 AD) to the Postclassic Period (900–1500 AD). Our results provide evidence for a marked sexual division of labour when compared with values from contemporaneous inland populations. The overall male and female loading patterns differ remarkably in terms of form and in bilateral comparison. A high directional asymmetry in the upper limbs is evident among males, a condition related to maritime transportation and trading activities. On the other hand, female upper limbs are characterized by very low side differences. Forces on the arms of women were probably dominated by food processing, in particular the grinding of grains or seeds. In the lower limbs, males show significantly higher anteroposterior bending strengths, which can be explained by greater engagement in transportation tasks and carrying heavy loads. In the course of the Classic period (350–900 AD), diachronic changes affect the male sample only, which suggests a shift of occupational pattern and physical demands. This shift, in turn, reflects Xcambó's changing role as the centre of a densifying settlement area and its place in the trading activities of northern Yucatan. Other topics of discussion relate to general regional trends and local prehispanic subsistence strategies. Our conclusions emphasize the value of geometric long bone analysis in the reconstruction of activity patterns and lifestyles in ancient coastal settlements. Copyright © 2007 John Wiley & Sons, Ltd.     

The importance of location and scale in rural and small town tourism product development: The case of the Canadian Fossil Discovery Centre,Manitoba, Canada

This paper begins with a review of the literature on tourism in rural economies, to establish a framework for analyzing large‐scale tourism products in rural and small town regions. The review is followed by the development of a typology of large‐scale attractions in rural and small town regions, including parks, casinos, events, heritage, and cultural products. The typology leads into the example of the Canadian Fossil Discovery Centre (CFDC) in Manitoba, Canada. Located in an agricultural region of south‐central Manitoba, the community of Morden is located 125 km from the provincial capital city, Winnipeg, which had a population of 811,900 in 2016. Morden is also located 35 km north of the border with North Dakota. Thus, while a small town in a traditionally rural region still dependent upon an agricultural economic base, Morden has been recently successful in diversifying its economy, including through manufacturing, services, hospitality, and tourism. In part, this success is due to a south‐central Manitoba location; however, it is also the result of innovative local leadership, including the prioritization of hospitality and tourism related to the CFDC. This paper describes the case study as an example of successful tourism development within an already economically and socially diversifying region.     

Differences in the location of urban museums and their impact on urban areas

Traditionally, museums spaces have tended to be located in the central areas of cities, thereby reinforcing existing dynamics and limiting their potential impact on more peripheral areas. The present study examines the locations chosen for museums that have been opened in three European cities: Barcelona, Paris and Turin, between the years 2000 and 2013. It shows how the locating of museums and galleries has not been homogeneous and how each potential location has its strengths and weaknesses. This is particularly evident when we consider such factors as the environmental impact of museums and how they influence the commercial offer, image and attractiveness of their host city. This paper identifies and examines the different types of impact that museum location strategies have on urban areas.     

内战前美国南部白人民主政治的发展与政治权力的归属

美国的政治制度在内战之前的半个多世纪发生了重大变革,其显著标志是废除了选举权和担任官职的财产资格限制,确立了白人男性成人的选举权和担任官职资格,在制度上确立了白人民主制.然而在美国南部蓄奴州,奴隶制的社会整合作用导致政治权力落入奴隶主利益集团的掌控之中.这样,法制上的白人民主制在实际政治世界中就蜕变成了奴隶主统治.在内战前的南部政治世界中,在总体上奴隶主政治人物担当着领导角色,广大非奴隶主大众是奴隶主在政治活动中的附庸.     

河南信阳战国楚墓出土彩席漆膜的成分、表面形态及髹漆工艺分析

河南信阳城阳城遗址M8为高等级战国晚期楚国贵族墓,该墓出土了以漆木器为主的各类文物400余件,其中尤以黑、红两色竹蔑编织而成的髹漆竹席最为精美。为开展彩漆竹席脱水保护提供基础数据,采用激光共聚焦显微镜、拉曼分析仪和傅里叶红外吸收光谱仪(FTIR)及扫描电镜-能谱(SEM-EDS)等现代分析仪器对竹席漆膜的成分及表面形态进行了分析,并在此基础上,结合传统髹漆文献资料探讨了漆膜的制作工艺。结果表明:城阳城彩席中的黑色漆膜为大漆自然显色,红色漆膜是大漆掺加朱砂调制而成;黑色漆膜表面较为平整,漆膜与胎体结合紧密,红色漆膜表面相对粗糙,结构较为疏松;竹席漆膜的厚度在0.02~0.03 mm之间,应是由大漆涂刷至少3~5次制备而成。研究结果可为下一步的彩漆竹席的脱水保护及展示提供基础数据。     

Where cities fail to triumph: The impact of urban location and local collaboration on innovation in Norway

The role of cities in fostering innovation has for long been taken for granted. Agglomeration and the knowledge spillovers generated in dense urban environments have been considered fundamental drivers of innovation. This view has, however, become challenged by research questioning the returns to physical agglomeration and local networking, placing instead more emphasis on the importance of interregional and international collaboration, and on innovation in peripheral regions. This paper delves into the debate on the role of cities for innovation by examining the interplay between urban location and local collaboration in Norway. It uses data from the Community Innovation Survey for 2006–2010 to map out the geographical dimension of R&D collaboration in Norwegian firms with a view to assessing whether different types of R&D collaboration in urban and rural locations affect firms’ propensity to innovate. The results show that local collaboration is associated with increased process and organisational innovation, while it does not produce higher levels of product or marketing innovation. Conversely, international collaboration is connected with higher probabilities of product, new-to-market and marketing innovations. Furthermore, location in urban or rural areas makes no difference for most innovation outcomes in Norway when other characteristics are controlled for. Location in cities also does not shape the returns to local R&D collaboration. Hence, the role of cities for innovation in Norway, whether in themselves or as sites for dense local interaction, is less relevant than the urban innovation literature would predict.