A Procedure to Generate Thiessen Polygons

An algorithm to generate Thiessen diagrams for a set of n points defined in the plane is presented. First, existing proximal polygon computation procedures are reviewed and terms are defined. The algorithm developed here uses a rectangular window within which the Thiessen diagram is defined. The computation of Thiessen polygons uses an iterative walking process whereby the processing starts at the lower left corner of the diagram and proceeds toward the right top corner. The use of a sorted point sequence and dynamical core allocation provide for efficient processing. The presentation is concluded by the discussion of an implementation of the algorithm in a FORTRAN program.     

Skeletal evidence for health and disease in the Iron Age of northeastern Hungary

As part of a project to examine health trends in northeastern Hungary, 171 individuals originating from two Iron Age sites were examined. The analysis produced data comparable with those previously published from the Bronze Age in the same area. Comparison suggests slight temporal increases in most indicators of morbidity. © 1998 John Wiley & Sons, Ltd.     

Policing the social boundaries of the American Medical Association, 1847-70

In May 1870 the American Medical Association (AMA) voted to deny the admission of black delegates and their white colleagues to the national meeting in Washington, D.C. Historians of race and medicine have customarily viewed this decision as marking a crucial milestone in the formation of the nexus between racism and the development of the American medical profession in the era after the Civil War (1861-64). This study recasts this narrative by locating the 1870 decision in relation to the antebellum practices of the association and their social consequences for American medicine. It argues that the viability of the AMA as the national voice of the profession was critically dependent on rejecting racial equality. Indeed, at a moment when the question of the abolition of slavery polarized the nation, the AMA was founded in 1847 to create a voluntary professional organization, national in scope, dedicated to raising the standards of medical training and practice. To this end, the AMA elected presidents and selected host cities for annual meetings in the North, South, and West. Seven out of the fourteen meetings and six out of fourteen presidents were from slave and/or border states. These institutional practices together with the representation of blacks as different and enjoying an appropriate status as slaves grounded the national identity of the profession in black subordination. Similarly, the gendered discourses about healing and practices of female exclusion privileged medical authority as male by drawing on and reinforcing patriarchy. In the wake of the war, leaders hoped to restore the national character of the organization by resuming antebellum practices. In response to the new possibilities for blacks in medicine--as represented by the biracial National Medical Society--the AMA took steps to vigorously police the racial boundaries of the national profession. As this study will show, the 1870 decision reflected the logic of the racial politics at the heart of the association's antebellum past and would loom large in its future.     

The Ethnoarchaeology of Juvenile Foragers: Shellfishing Strategies among Meriam Children

Recognizing children's contribution to the archaeological record may be crucial for our ideas about the role of children in human evolution. Despite this, analyses of children's activities and how they might shape archaeological patterns are almost entirely absent from discussions about site formation processes. This may in turn result from the assumption that children are either inconsequential in their foraging activities or that identifying children's activities archaeologically will be difficult if not impossible. This challenge drew our attention toward children's intertidal gathering among the Meriam of the Eastern Torres Strait as a possible agent of patterned and predictable variability in shell middens. We present an analysis of differences between the prey choice and field processing strategies of children and adults and explore an hypothesis for predicting their archaeological effects on faunal assemblage variability.     

A Mediaeval Case of Lepromatous Leprosy from 13–14th Century Orkney, Scotland

Erosion in the 1960s resulted in exposure of human skeletal remains from a Norse Christian cemetery at Newark Bay, Orkney, Scotland. One set of remains showed osteological evidence of advanced lepromatous leprosy, but the absence of bones from the lower limbs precluded definitive diagnosis. The aim of the present study was to determine whether Mycobacterium leprae could be detected in bone extracts, as a means of confirming the diagnosis of leprosy. Bone samples were examined from the suspected leprosy case and from a second contemporary burial thought to be free of disease. DNA was amplified by polymerase chain reaction (PCR) using primers specific for a repetitive element (RLEP) characteristic of M. leprae. Additional PCR tests specific for Mycobacterium tuberculosis and for amelogenin (a human gene suitable for sex determination) were also applied to the samples. M. leprae DNA was detected only in the skull sample from the suspected leprosy case. The DNA sequence was identical to that found in present day isolates of M. leprae. Positive results were obtained only using a PCR reaction designed to amplify relatively short stretches of DNA (<175 bp), suggesting the microbial DNA had undergone extensive fragmentation. There was no evidence of M. tuberculosis DNA in bones from the leprosy suspect or control individual. The ability to recover ancient samples of DNA provides an opportunity to study long-term evolutionary changes that may affect the epidemiology of microbial pathogens.     

Development and the Role of Microcredit

Microcredit is a concept that has gained widespread acceptance by international development agencies and major donors. It is viewed as a way to correct both governmental and market failure in Sub-Saharan Africa. Many view microcredit as a method for linking the formal and informal sectors of African economies to increase the reach of the formal sector. Extending the reach of the formal economy through microcredit is possible, and desirable, depending on macroeconomic reforms, respect for traditional financing relationships, and local control of institutions. However, very little has been done to determine the extent to which microcredit programs actually increase economic well-being. The model program, Grameen Bank of Bangladesh, has been studied and evaluated, but replications may not be inherently successful. The literature accepts that microcredit will increase economic well-being, if programs are correctly designed. Program design issues cannot be resolved, however, until economic well-being is measured and associated with specific designs.