Literatur

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Evolving Market Efficiency with an Application to Some Bulgarian Shares

With new technically advanced methods and computers at our disposal, the efficient market hypothesis is once again being debated. At the same time, we are witnessing an unprecedented growth in both existing and new financial markets. These new markets are often in economies which have just recently embraced free market economics; we term these stock markets infant markets. Such stock markets are obviously not efficient in allocating the supply of savings to productive capital. We do not test whether or not these infant markets are informationally efficient, but instead examine whether and how they are becoming more efficient. We propose modelling the excess returns of individual securities using a multi-factor model with time-varying coefficients and generalised auto-regressive conditional heteroskedastic (GARCH) errors. If the markets are becoming more informationally efficient or the agents are learning, we would expect this to manifest itself as the time-varying coefficients becoming more stable as time increases. We test our model using data on four Bulgarian shares. First, we estimate an AR(2) model and a GARCH-M(1,1) model for the shares. Then, we estimated our AR(2) model with time varying coefficients and GARCH type errors. We find varying levels of efficiency and varying speeds of movement towards efficiency within our sample of four shares.     

The Victorian Women on Farms Gatherings: A Case Study of the Australian “Women in Agriculture” Movement

This article provides a case study of the Victorian Women on Farms Gatherings (WOFG) to redress the lack of attention political historians have paid to farm women. Using materials collected by Museum Victoria, we trace the reasons for farm women's activism during the latter part of the twentieth century, and document the activities and outcomes of the Gatherings held annually since 1990. Our study demonstrates that farm women see politics as multi-faceted and heterogeneous. In short, there are no clear binaries between the political and non-political. This demonstrates the need to avoid masculinist and conventional definitions of politics, which obscure the political activities of women. Politics should not be conceptualised in a manner which associates women as a group with informal and non-traditional political activity. This simply reinscribes the types of binaries that have encouraged the omission of women from political history.     

‘US, China and the Economics of Climate Negotiations’

Despite the entry into force of the Kyoto Protocol, the US decision not to comply with its Kyoto commitments seems to drastically undermine the effectiveness of the Protocol in controlling GHG emissions. Therefore, it is important to explore whether there are economic incentives that might help the US to modify its current decision and move to a more environmentally effective climate policy. For example, can an increased participation of developing countries induce the US to effectively participate in the effort to reduce GHG emissions? Is a single emission trading market the appropriate policy framework to increase the signatories of the Kyoto Protocol? This paper addresses the above questions by analysing whether the participation of China in the cooperative effort to control GHG emissions can provide adequate incentives for the US to re-join the Kyoto process and eventually ratify the Kyoto Protocol. This paper analyses three different climate regimes in which China could be involved and assesses the economic incentives for the major world countries and regions to participate in these three regimes. The main conclusion is that the participation of the US in a climate regime is not likely, at least in the short run. The US is more likely to adopt unilateral policies than to join the present Kyoto coalition (even when it includes China). However, a two bloc regime would become the most preferred option if both China and the US, for some political or environmental reasons, decide to cooperate on GHG emission control. If the US decides to cooperate, the climate regime that provides the highest economic incentives to the cooperating countries is the one in which China and the US cooperate bilaterally, with the Annex B_?US countries remaining within the Kyoto framework.