Eyes on the alley: children’s appropriation of alley space in Riverdale,Toronto

ABSTRACT

Recent research suggests that numerous positive physical, cognitive, and social benefits can be derived from independent mobility and play agency amongst children, necessitating an understanding of how physical and social environments facilitate this development. This study involved parents, and children aged 9–13 from twelve households in the neighbourhood of Riverdale in Toronto. Using a mapping exercise to instigate discussion, participants were asked to describe where, how, and with whom play occurs in their neighbourhood. A reoccurring theme emerged amongst households that border a back alley where parents perceived this space as safer allowing them to grant greater independent mobility to their children and use this space as an intermediary tool to prepare their children for greater independence. For children, this space serves as one of creative appropriation, granting them access to more space and friends to play with. Situated within the context of age-friendly cities, this research identifies several socio-spatial qualities found in alleys that have the potential to contribute to the discussion of more inclusive city-building practice.     

Not About Land,Not Quite a Grab: Dispersed Dispossession in Rural Russia

In most literature in geography and agrarian studies, rural dispossession is neatly related to land rights or access, a trend that increased with debates about the recent wave of farmland investments worldwide. Drawing on long‐term fieldwork in rural Russia, this paper critiques that focus and the assumed nexus between rural dispossession and farmland, as is prevents an understanding of more dispersed stakes, modes and temporalities of dispossession. I introduce the concept of dispersed dispossession which advances our understanding of social and relational objects of dispossession beyond natural resources (such as sustaining institutions and infrastructures), and the tangled, complex, often slow and silent modes and temporalities of dispossession beyond spectacular events. I show how the concept sheds new light on current agrarian change in Russia, and how it contributes to debates on (rural) dispossession and “land grabs” more generally.     

Effective hydration temperature of obsidian: a diffusion theory analysis of time-dependent hydration rates

An estimate of effective hydration temperature (EHT) is needed for chronological use of obsidian hydration data. This paper describes a method for calculating EHT by the practicing archaeologist, replacing three techniques that are in general use today: estimates based on mean temperature, numerical integration of models of diurnal and annual temperature variations, and use of temperature cells. The hydration (or diffusion) coefficient of obsidian is a function of temperature and thus is time varying, while the classic quadratic law of hydration is not valid for time-varying diffusion coefficients. This paper presents a mathematical solution to the case of a time-varying hydration coefficient, based on diffusion theory, with a concise definition of EHT. It is shown that the results are not affected by concentration dependence in the diffusion coefficient. A computer program to compute the rigorous solution is described, and data are presented to explore the resulting range of variation. That use of the Lee equation to compute EHT is not appropriate for obsidian hydration studies is evident from the data presented. The effects of paleoclimatic variation are estimated, and an algebraic best fit equation and worksheet are provided as practical aids to the archaeologist.     

A contribution to the study of post-depositional alterations of pottery using TL dating analysis

In luminescence dating, the potassium concentration significantly contributes to the dose rate value in the age estimation. Within this study, fine-grain thermoluminescence dating has been applied on sherds of calcareous pottery of known age, excavated at a Roman site in Mallorca, Spain. For those of the samples that showed signs of severe potassium leaching, according to chemical and mineralogical examination, the thermoluminescence analysis provided overestimated dates. By using the known archaeological age of the samples, a corrected dose rate value can be estimated which provides the potassium concentration averaged for the burial period. Finally, a step-like model can then be used to estimate the fraction of the burial period after which most of the alteration effects took place.     

Book reviews

The Solitary Self: Jean‐Jacques Rousseau in Exil and Adversity. By Maurice Cranston (Chicago, IL: University of Chicago Press, 1997) xii + 247 pp. $29.95 cloth.

The Self‐Aware Image: An Insight into Early Modern Meta‐Painting. By Victor I. Stoichita (Cambridge: Cambridge University Press, 1997) xv + 345 pp. $85.00, £55.00 cloth.

The Cambridge Companion to Nietzsche. Edited by Bernd Magnus and Kathleen M. Higgins (Cambridge: Cambridge University Press, 1996) ix + 403 pp. $18.95, £13.95 paper, $59.95, £40.00 cloth.

David Hume: Political Essays. Edited by Knud Haakonssen, Cambridge Texts in the History of Political Thought (Cambridge: Cambridge University Press, 1994) lxvi + 346 pp. $49.95, £30.00 cloth, $15.95, £10.95 paper.

Sartre, Foucault, and Historical Reason. By Thomas R. Flynn (Chicago and London: The University of Chicago Press, 1997) 340 + xvi pages. $18.95 paper.

Shaping World History: Breakthroughs in Ecology, Technology, Science, and Politics. By Mary Kilbourne Matossian (Armonk, NY: M.E. Sharpe, 1997) 264 pp. $62.95 cloth, $22.95 paper.     

Stylistic Change as a Self-Organized Critical Phenomenon: An Archaeological Study in Complexity

Archaeologists can learn from models of evolution as a self-organized critical phenomenon. Self-organized critical systems are large, interactive systems that organize into a critical state where minor events can trigger chain reactions. Such systems demonstrate power-law distributions in the size of changes, or avalanches, that occur. The theory of self-organized criticality is important in that it implies that the evolution of complex systems may be driven more by interactions between agents than by external events or natural selection. Stylistic changes may be examples of avalanches of interconnected events. Evidence for self-organized criticality is shown for stylistic evolution in historical pottery styles from New York State and is used to evaluate the nature of a prehistoric pottery typology from the Southwest.     

Sir Reader Bullard,Frank Roberts and the Azerbaijan crisis of 1945–46: Bevin’s officials,perceptions and the adoption of a Cold War mentality in British Soviet Policy

This article evaluates the influence of the Azerbaijan crisis of 1945–46 on evolving perceptions of the Soviet Union within the British Foreign Office. Utilising records from the National Archives and personal papers, it synthesises the history of the Azerbaijan crisis with studies of Britain’s changing Soviet policy, previously focused solely on the Northern Department and Moscow representative Frank Roberts. In so doing, the paper provides an original diplomatic history which argues that, although Europe remained the strategic priority for Foreign Secretary Ernest Bevin, Iranian developments were of greater significance in prompting a perceptual transition from cooperation to Cold War confrontation.