The Commodity Question: New Thinking on Old Problems

human development, aid, trade, security

Comparative Appraisal of Multilateral and Bilateral Approaches to Financing Private Sector Development in Developing Countries

private sector development, development cooperation, bilateral aid, multilateral aid

Time perception and its neuropsychological correlates in patients with schizophrenia and in healthy volunteers

Disordered time perception has been reported in schizophrenia. We investigated time perception dysfunction and its neuropsychological correlates in patients with schizophrenia. Participants comprised 38 patients and 38 age- and sex-matched healthy volunteers who were compared in an auditory temporal bisection paradigm using two interval ranges (a 400/800 ins condition and a 1000/2000 ms condition). In the temporal bisection, subjects were required to categorise a probe duration as short or long, based upon the similarity with two reference durations. All subjects also completed a battery of neuropsychological tests measuring sustained attention, short- and long-term memory and executive function. In the 400/800 ins condition, patients judged durations significantly shorter than did control subjects. Patients also exhibited decreased temporal sensitivity in both conditions. We found in both groups a negative association between temporal sensitivity and sustained attention for the 400/800 ms condition, and between temporal sensitivity and long-term memory for the 1000/200 ms condition. In patients, short-term memory performance was negatively associated with duration judgement in both conditions, while executive dysfunction was correlated to a general performance deficit in the 400/800 ms condition. These findings suggest the possibility that time perception abnormalities in schizophrenia are part of neuropsychological dysfunction and are likely to adversely impact upon activity of daily living. (c) 2008 Elsevier Ireland Ltd. All rights reserved

Agro?Commodity Chains

Summaries This article combines the GCC and Convention Theory frameworks to compare the value chains for agro?commodities before and after the decade 1980–90. Crudely, this period was a watershed between producer?driven and buyer?driven forms of organisation. Subsequently, two types of buyer?driven chain have become differentiated: one with low entry barriers that is experiencing downgrading, and one with high entry barriers that is experiencing upgrading. A major policy challenge is to find institutional means of lowering the entry barriers to the second kind of chain, while preserving the upgrading trajectory. This article applies value?chain analysis to an agricultural ‘commodity’ which is in the process of significant change in final product markets. By focusing on the capacity of value?chain analysis to map input?output relations, and by identifying power asymmetries along the chain, it is possible to analyse the factors explaining inter?country distributional outcomes in this sector. A major conclusion is that we are witnessing a simultaneous process of power concentration in importing countries and power deconcentration in producing countries. It is hypothesised that similar trends can be observed in other agricultural?based value chains

Gender and Videogames: The political valency of Lara Croft

The Face: Is Lara a feminist icon or a sexist fantasy? Toby Gard: Neither and a bit of both. Lara was designed to be a tough, self-reliant, intelligent woman. She confounds all the sexist cliches apart from the fact that she’s got an unbelievable figure. Strong, independent women are the perfect fantasy girls—the untouchable is always the most desirable (Interview with Lara’s creator Toby Gard in The Face magazine, June 1997)

Low-Temperature Wafer-Scale Deposition of Continuous 2D SnS2 Films

Semiconducting 2D materials, such as SnS2, hold immense potential for many applications ranging from electronics to catalysis. However, deposition of few-layer SnS2 films has remained a great challenge. Herein, continuous wafer-scale 2D SnS2 films with accurately controlled thickness (2 to 10 monolayers) are realized by combining a new atomic layer deposition process with low-temperature (250 degrees C) postdeposition annealing. Uniform coating of large-area and 3D substrates is demonstrated owing to the unique self-limiting growth mechanism of atomic layer deposition. Detailed characterization confirms the 1T-type crystal structure and composition, smoothness, and continuity of the SnS2 films. A two-stage deposition process is also introduced to improve the texture of the films. Successful deposition of continuous, high-quality SnS2 films at low temperatures constitutes a crucial step toward various applications of 2D semiconductors.Peer reviewe