PANEL DATA MODELS WITH SPATIALLY DEPENDENT NESTED RANDOM EFFECTS

This paper focuses on panel data models combining spatial dependence with a nested (hierarchical) structure. We use a generalized moments estimator to estimate the spatial autoregressive parameter and the variance components of the disturbance process. A spatial counterpart of the Cochrane‐Orcutt transformation leads to a feasible generalized least squares procedure to estimate the regression parameters. Monte Carlo simulations show that our estimators perform well in terms of root mean square error compared to the maximum likelihood estimator. The approach is applied to English house price data for districts nested within counties.     

Stone Tool-Making and Brain Activation: Position Emission Tomography (PET) Studies

This study introduces to archaeology a new experimental technique for examining the relationship between stone tool-making and brain function. The principal focus of this exploratory study was the development of effective methods for the identification and examination of the regions of the modern human brain recruited during the manufacture of simple (Oldowan or Mode I) stone tools. The functional brain imaging technique employed, Positron Emission Tomography (PET), examines task-related brain activity by assessing changes in regional cerebral blood flow during specific tasks. The single-subject study reported here represents a heuristic, initial exploration of this subject. Results indicate that during stone tool-making there was heavy activation of cortical and subcortical regions of the brain associated with motor and somatosensory processing. Especially interesting was the high degree of activation in areas known to be involved with complex spatial cognition requiring integration of diverse sensory inputs (e.g. vision, touch, and proprioception, or sense of body position and motion). Expansion of such higher-order association areas has been particularly important during the course of human evolution. This single-subject pilot study demonstrates the application of the PET brain imaging technique to the study of early stone technologies and suggests hypotheses to be tested in more comprehensive studies in the future.     

Fast food/organic food: Reflexive tastes and the making of 'yuppie chow'

Organic food consumption is one of several new trends in eating read as active opposition to industrialized food provision. While fast food consumption is characterized by compulsive gluttony, manifest in fat bodies, alternative consumption practices are seen to be driven by conscious reflexivity, such that consumers monitor, reflect upon and adapt their personal conduct in light of its perceived consequences. The purpose of this paper is two-fold. One is to examine the evolution of organic food from what Belasco called the 'counter-cuisine' to what organic growers call 'yuppie chow', to show how organic salad mix was the carrier of major changes in the organic system of provision, thereby calling into question the notion that organic food is necessarily an antidote to industrialized food. The other is to problematize the facile dichotomies between fast and slow, reflexive and compulsive, fat and thin, and, hence, good and bad eaters, to show where there is slippage and instability in these categories, in addition to a troubling politics of class and gender. To these ends, I showcase the changing provision of a particular organic commodity (salad mix, or mesclun) in California.     

Doing Justice to Bodies? Reflections on Food Justice,Race, and Biology

Abstract: The food justice concept takes disproportionate prevalence of obesity and type 2 diabetes among people of color as evidence of injustice. Yet several measurements of obesity are based on norms derived from white bodies, which can also be a source of injustice. Part of the conceptual problem lies with reticence to discuss questions of material bodily difference as it relates to race given the legacy of racial science. Noting the distinction between racialism and racism, this article explores ways to think about biological difference in raced bodies, without reducing it to genetics. It draws on insights from Foucauldian notions of race and the new science of epigenetics to suggest that biological difference is more an effect of racism than a cause. Several pathways to obesity exist that have less to do with current day food access or genetic inheritance than with differential exposures that are somatized epigenetically.     

Fish ’n chips: ZooMS peptide mass fingerprinting in a 96 well plate format to identify fish bone fragments

Fish are a large, highly diverse, and anthropologically important group of vertebrates. However, fish bones are underrepresented in the archaeological literature because they are less stable than those of other taxa and identification of bone to species is often difficult or impossible. We explore a new identification system, ZooMS (Zooarchaeology by Mass Spectrometry), which is based upon protein barcoding. As proteins can be cleaved enzymatically and analyzed by mass spectrometry in a repeatable way, protein barcoding is used widely in microbiological contexts for quick and inexpensive protein identification; mass spectra reflect the differences in protein sequence and can therefore be reproducibly linked to a particular protein or protein fragment. ZooMS uses peptide fingerprinting of bone collagen as a method for rapid identification of archaeological bone. This has involved the identification of masses related to peptides of known sequence. For mammals, sufficient sequence information is available for this approach but for groups, such the teleost fish, species are highly diverse and there are few available collagen sequences. Here we report a preliminary investigation into the identification of fish species by peptide mass fingerprinting that does not require sequence information. Collagen mass spectra are used to identify eight species of bony fishes (Osteichthyes) from four orders: Clupeiformes, Salmoniformes, Gadiformes, and Perciformes. The method is applied to both modern and archaeological fish remains and offers the capacity to identify traditionally unidentifiable fish fragments, thus increasing the Number of Identified Specimens (NISP) and providing invaluable information in specialized contexts.