An incidence Hopf Algebra of Convex Geometries

A lattice L is "meet-distributive" if for each element of L, the meets of the elements directly below it form a Boolean lattice. These objects are in bijection with "convex geometries", which are an abstract model of convexity. Do they give rise to an incidence Hopf algebra of convex geometries

"The Contribution of Bio-energy to Meeting Renewable Energy Sources: European Union objectives"

[Summary]. The Community Strategy and Action Plan on Renewable Energy Sources, adopted in 1998, aims to double the part of RES in overall gross inland energy consumption from 6% to 12% by year 2010. Bio-energy is the main sector contributing to the achievement of this target and producing biomass for bio-energy is one of the main challenges in implementing the Strategy and Action Plan. As bio-energy is the only renewable energy that should be produced, contrary to wind, solar or hydro, agriculture and forestry sectors are key sectors in developing the bio-energy market. Community Research programmes have fostered technical improvements over the last years. New developments both in energy crops and bio-energy technologies show that reliable and cost effective solutions are available and examples of bio-energy installations around Europe open wider opportunities for farmers and energy producers

Chicana/o Artivism: Judy Baca's Digital Work with Youth of Color

Part of the Volume on Learning Race and Ethnicity: Youth and Digital Media Astounding digital murals have emerged from the minds and souls of Chicana artist Judy Baca and the youth of color who have collaborated with her over the past ten years. Their workspace is SPARC, the Social and Public Art Resource Center, founded by Baca in 1996 and dedicated to the creation and support of community and public art in Southern California. But the digital art they produce is not only located in SPARC -- it can be found in virtual installations globally, as well as on the walls of Los Angeles barrio housing projects and in the hybrid spaces of the Internet. We call their activity "digital artivism," a word that is itself a convergence between "activism" and digital "artistic" production. The digital artivism we find expressed through SPARC, we argue, is symptomatic of a Chicana/o twenty-first century digital arts movement. This digital artivist movement also advances the expression of a mode of liberatory consciousness that Chicana feminist philosopher Gloria Anzaldua calls la conciencia de la mestiza, i.e. the radical consciousness of a mixed race peoples. Chela Sandoval and Guisela Latorre call attention to this mode of digital artivism enacted by Baca and young people who are vested in the convergences between creative expression, social activism, and self-empowerment

The economic analysis of multinationals and foreign direct investment: a review.

This article provides an up-to-date, comprehensive synthesis and evaluation of the existing literatura on multinational firms and foreign direct investment. Unlike most previous reviews it combines severalinsights showing their inconsistencies and complementarities. Through a chronological description it presents the main strands since the earliest perfect competition studies from the 1960s till some new recent contributions such as the knowledge-capital model, heterogeneous firms models, and internalisation issues. The paper also offers a new perspective, by reviewing the available computable general equilibrium models that include multinationals and foreign direct investment.Multinational enterprises, Foreign direct investment, Computable general equilibrium models.