Markov Models of Inertia and Dynamism on Two Contiguous Ohio Landscapes

This study examined landcover change during 1940–1988 in two contiguous landscapes of approximately 12,400 hectares in central Ohio, USA: an inertial till plain area and a more dynamic moraine area. Agriculture dominated both landscapes throughout, however, the cover of natural vegetation and urban-suburban development increased over time on the moraine while natural vegetation decreased and agriculture increased on the till plain. Markov process models for landcover change were constructed for three 14–17-year time intervals and for the entire forty-eight-year study period. Probabilities of self-replacement for agricultural lands (0.91–0.97) were higher and those for forests (0.54–0.65) lower than those reported for other landscapes. Predictions of landcover percentages for fifty years in the future were made using Markov process models derived from actual cover changes in 1940–1957, 1971–1988, and 1940–1988. All three models produced similar predictions for the inertial till plain area. In contrast, the three models' predictions differed considerably for the moraine area. Only the 1971–1988 transition matrix was sensitive to increases in urbanization and reforestation which began on the moraine in the 1970s. These results indicate that reliance on lengthy study intervals and net rates of change can obscure spatial and temporal patterns of landcover change that are caused by natural and socioeconomic factors operating on shorter time scales.     

MULTICOIN: A TOOL FOR CLASSIFYING COINS IN A MULTIMEDIA ENVIRONMENT

Classifying coins found during excavation is a challenging task for the archaeologist. This paper describes a multimedia system designed to assist the archaeologist by enabling him either to classify coins based on a pre-existing catalogue or to draw up his own catalogue for specific purposes. The system can also be used to train novices in the field: following an initial screening, the archaeologist only has to examine coins specifically requiring his expertise. A case study uses coins minted in Salerno 800–1200 AD, but the system has been designed to classify any set of coins by simply changing the underlying knowledge base. Very little training is required to operate the user-friendly system, which runs on multimedia PCs, as it is written using the C++ language and makes full use of the advanced features of Windows 3.11.     

Ancestral pueblo population aggregation and abandonment in the North American Southwest

After over a century of archaeological research in the American Southwest, questions focusing on population aggregation and abandonment continue to preoccupy much of Pueblo archaeology. This article presents a historical overview of the present range of explanatory approaches to these two processes, with a primary focus on population aggregation in those regions occupied by historic and prehistoric Pueblo peoples. We stress the necessarily complementary nature of most of these explanations of residential abandonment and aggregation. Case studies from the northern Southwest illustrate the continuous nature of these processes across time and space. We suggest that additional explanatory potential will be gained by the use of well-defined theoretical units to frame our current approaches. We extend the use of the local community concept as a theoretical unit of organization that, along with explicit archaeological correlates, should help advance our research into population aggregation and abandonment in this and other regions of the world.     

An cUbaid site in the Emirate of Sharjah (U.A.E.)

This article reports on the excavations of a coastal site in Sharjah dating to the 5th millennium BC at which examples of painted ^cUbaid pottery, probably of Mesopotamian origin, were found.     

Constructions of Filipina Migrant Entertainers

While international labor migration from South and South-east Asia has received a considerable amount of attention in academic circles, a feminist discourse is largely ignored. This ignorance is reflected in a dearth of materials on women labor migrants, as well as explicit considerations of gender. Discussions of Filipina migrant entertainers commonly emphasize poverty as the primary determinant of their movement. Evidence does suggest that unemployment in the Philippines has contributed to their search for overseas employment. However, this discourse has kept hidden other institutionalized forms of oppression that continuously and simultaneously affect Filipina migrant entertainers. In particular, the concrete realities of their gender, race, and nationality have been replaced by a reductionist overemphasis on economic factors. Through an examination of government and private institutions engaged in the recruitment, deployment, regulation, and protection of overseas contract workers, I identify and deconstruct four controlling images of Filipina migrant entertainers: the Other; the prostitute; the willing victim; and the heroine. I argue that these reflect the observer's intention, objectives, and motives in addressing the situation of Filipina migrant entertainers. Specifically, these representations of Filipina migrant entertainers have been socially constructed to rationalize and justify the existing material conditions encountered by the women. This analysis transcends more traditional migration studies that focus predominantly on a single factor- economics-to the exclusion of other interrelated aspects, such as gender, race, and nationality. The discussion addresses the epistemological foundations of how the migration of Filipina entertainers is contextualized.     

LIME PLASTER AS AN ADHESIVE FOR HAFTING EIGHTEENTH-DYNASTY FLINT SICKLES FROM TELL EL DAB'A,EASTERN NILE DELTA (EGYPT)*

A combination of analytical techniques, including thin-section observations, scanning electron microscopy, X-ray diffraction and X-ray fluorescence analysis, was applied to study the nature and origin of an adhesive used for mounting flint sickle blades to a wooden handle, recovered from early Eighteenth Dynasty culture layers of the multi-layer settlement at Tell el Dab'a, Lower Eygpt. The results obtained from these investigations led to the conclusion that the adhesive is a pure lime plaster, thus providing the oldest evidence for the use of this material as a binding agent so far known in ancient Egypt.     

Predictors of Out-of-Home Placement in a Family Preservation Program: Are Welfare Recipients Particularly Vulnerable?

Participants in a statewide family preservation program were classified on the basis of income level and enrollment in public assistance. These variables, along with other economic, parent, and child risk factors, were used to predict the probability of out-of-home placements at the close of this intervention program. Results revealed that neither low income nor receiving public assistance was predictive of having a child removed from the home. Higher levels of child-centered risk and parent-centered risk were the only consistent predictors of placement outcomes. Additional analyses revealed that family characteristics (e.g., history of psychiatric care, prior child placements, and involvement with the legal system) also were typical of families experiencing out-of-home placements. This study challenges the stereotype of low-income or welfare families being at greater risk of having a child removed from their home. Findings are discussed in the context of recent welfare reform initiatives and implications for future family policy research.