Magnetoresistance in quasi-one-dimensional metals due to Fermi surface cold spots

In a number of quasi-one-dimensional organic metals the dependence of the magnetoresistance on the direction of the magnetic field is quite different from the predictions of Boltzmann transport theory for a Fermi liquid with a scattering rate that is independent of momentum. We consider a model in which there are large variations in the scattering rate over the Fermi surface. The model is the quasi-one-dimensional version of the ``cold spots'' model introduced by Ioffe and Millis to explain anomalous transport properties of the metallic phase of the cuprate superconductors. The dependence of the resistance, in the most and least conducting directions, on the direction and magnitude of the magnetic field are calculated. The calculated magnetoresistance has a number of properties that are quite distinct from conventional transport theory such as magic angle effects a significant magnetoresistance when the field and current are both in the least conducting direction. However, the model cannot give a complete description of the unusual properties of (TMTSF)2PF6 at pressures of 8-11 kbar.Comment: 16 pages, RevTex + epsf, 6 figure

The Treaty-Making Power Is Not a Peril

In the United States the treaty-making power is vested in our President and the Senate. Many persons fear this power; they feel that it is so great that it could be used as an instrument to destroy our American democracy. They fear that by treaty the Constitution of the United States may be repealed and replaced by political concepts that are multifarious to our basic freedoms. Because of the structure of our government I feel that these fears are not well substantiated

Dewpoint temperature inversions analyzed

Dewpoint temperature inversion, with regard to other simultaneous meteorological conditions, was examined to establish the influence of meteorological variables on the variation of dewpoint temperature with height. This report covers instrumentation and available data, all the climatological features of dewpoint inversions, and specific special cases

The Impact of Hosting a Major Sport Event on the South African Economy

The impact of the sporting industry on economic decision making has increased dramatically since the global media explosion in the 1980s. Tourism and advertising revenues generated by these mega-events have become a major boost to the economies of hosting nations. In addition, globalisation has placed great emphasis on the importance of foreign direct investment (FDI), especially to developing countries. This paper seeks to examine the impact of the pre-event phase expenditure attributed to the hosting of the 2010 FIFA World Cup on the South African economy. In this phase, expenditure is mainly geared towards the construction and improvement of infrastructure required to successfully host the event. Using a Computable General Equilibrium (CGE) model developed specifically for the South African economy, the impact of the pre-event phase on the local economy is measured. It is found that there is a positive impact on most macroeconomic variables, including GDP and employment. With the potential economic benefits of the event and post-event phases of the World Cup also taken into account, it can be concluded with relative certainty that the impact of hosting a mega-event on the South African economy is beneficial towards achieving higher economic growth and development. In addition to analysing the impact of the 2010 FIFA World Cup, the outcomes are also used to briefly examine the feasibility of South Africa’s bid to host the 2011 IRB World Cup and the 2016 Olympic Games.computable general equilibrium, mega-events, economic development

The transfer of energy technology : a case study of hydropower in Lesotho

Bibliography: leaves 81-85.This work investigates strategies for the transfer of energy technologies so as to develop the necessary capability for adapting and adopting such technologies in the recipient country using the transfer of hydropower technology to Lesotho as a case study. The work reviewed the literature on this subject as a background to the development of a technology transfer framework that formed the basis of the analysis. The framework was tested using the Muela hydropower project in Lesotho. Existing mini-hydropower projects in Lesotho were also reviewed to identify possible lessons from them regarding objective of this study