the main objective of this article is to present a comparative study of capital assets pricing models (capm) with extrapolating capital assets pricing models (x-capm) of companies admitted in tehran exchange market which is accomplished for the first time by investigators of this research in iran. accordingly, the statistical population under study of this research includes all companies admitt...

Past performance is no guarantee of future results. Potential for profi t is accompanied by possibility of loss. Commodities trading involves substantial risk of loss. Introduction Essential Beta (EB) is an investment strategy designed to achieve equity like returns with balanced portfolio volatility and a low correlation to equities. It does so by selecting the liquid markets that are essentia...

This paper extends the Log-robust portfolio management approach to the case with short sales, i.e., the case where the manager can sell shares he does not yet own. We model the continuously compounded rates of return, which have been established in the literature as the true drivers of uncertainty, as uncertain parameters belonging to polyhedral uncertainty sets, and maximize the worst-case por...

OBJECTIVE Initiatives to monitor progress in health interventions like sanitation are increasingly focused on disparities in access. We explored three methodological challenges to monitoring changes in sanitation coverage across socio-economic and demographic determinants: (i) confounding by wealth indices including water and sanitation assets, (ii) use of individual urban and rural settings ve...

BACKGROUND This study assesses the association between socioeconomic factors and living arrangements with activity of daily living limitations (ADL) and the receipt of informal and formal care among non-institutionalized Brazilians aged ≥ 60 years. METHODS Data come from a nationally representative survey (the Brazilian National Health Survey), conducted in 2013. Outcomes examined include the...

The paper uses the concept of credit limit to analyze the determinants of household access to and participation in informal and formal credit markets in Malawi. Households are found to be credit constrained, on average, both in the formal and informal sectors; they borrow, on average, less than half of any increase in their credit lines. Furthermore, they are not discouraged in their participat...

Cover images: A montage of two satellite sensor products, the cover image shows the lights of human settlements and (on May 14, 2002) variation in sea surface temperatures. The image illustrates several World Development Report 2003 themes: the link between growth and environment (higher income correlated with greater energy use), the continuing socioeconomic challenge of inequality and poverty...

a vast number of organizational projects as well as complexity of decision making process can cause particular challenges for project management and its leadership. in order to use organization assets and opportunities efficiently, it is necessary that manager implement a comprehensive multidimensional project portfolio management system that considers economic, social and technical details of ...

We propose a noisy rational expectations equilibrium model of asset markets with rationally inattentive investors. incorporate any finite number assets arbitrary correlation. also do not restrict the signal form and show that investors optimally choose single signal, which is linear combination all risky assets. This generates comovement prices contagion shocks, even when payoffs are negatively...