The Investment Incentives Effects of Land Use Regulations

This paper provides an overview and synthesis of the results from recent studies of how different types of land use regulations affect land development incentives. The presentation is nontechnical and focuses on uncovering general principles for the dynamic effects of such policies. It explains why the risk of regulation leads to faster development of unregulated land and how the effect on structural densities reflects the underlying pattern of growth in the demand for land by competing uses. It also discusses how the general pattern of timing and density responses for regulated property reflect the same growth patterns in demand. Working Paper No. 03-0

Citizen Mobilization and Community Institutions: the Public Education Network's Policy Initiatives - Executive Summary

The executive summary for a report that analyzes the results of a bold set of initiatives designed to stimulate and support public responsibility for public education in 14 locales around the country. Local education funds (LEFs) led these initiatives, which received support from the Annenberg Foundation through the LEFs' national organization, the Public Education Network (PEN). In each of the three initiatives, the LEFs were expected to lead a process of community engagement in one area of local education policy: equipping students to meet the standards set forth in accountability systems; improving teaching quality; or strengthening school-community ties

Designing a Travel Guide to the Un-Natural World: Exploring a Design-led Methodology

The analogy of designer as tourist in the un-natural world is used as an aid for thinking my way into the nature of design research. An exploration of how the design researcher, like a tourist, travels widely through the un-natural world of thought, theory and concept. If we are to design a travel guide for the un-natural world then what would this guide book look like, why do we need it and how could it work? The paper will propose that a ‘travel guide to the un-natural world’ in the form of a design-led methodology is needed for research into sustainable development and is useful not only for the design discipline but for the research community at large. These premises have been derived from the aptitude of the design process and the creative methods it employs to deal with the complex messiness of issues such as sustainability. Such a design-led methodology would be useful for the wider research community due to the integrative abilities of the design process and the trans-disciplinary scope of the tour through the un-natural world. Design-led methodology will be explored using examples from field work in Tumut (rural New South Wales, Australia) Keywords: Design Research, Design-Led Methods, Metadesign, Sustainability.</p

Defect model for the mixed mobile ion effect revisited: an importance of deformation rates

The progress in understanding the behavior of glassy mixed ionic conductors within the concept of the defect model for the mixed mobile ion effect (V. Belostotsky, J. Non-Cryst. Solids 353 (2007) 1078) is reported. It is shown that in a mixed ionic conductor (e.g., mixed alkali glass) containing two or more types of dissimilar mobile ions of unequal size sufficient local strain arising from the size mismatch of a mobile ion entering a foreign site can not be, in principle, absorbed by the surrounding network-forming matrix without its damage. Primary site rearrangement occurs immediately, on the time scale close to that of the ion migration process, through the formation of intrinsic defects in the nearest glass network. Neither anelastic relaxation below glass transition temperature, Tg, nor viscoelastic or viscous behavior at or above Tg can be expected being observed in this case because the character of the stress relaxation in a wide temperature range is dictated above all by the deformation rates employed locally to the adjacent network-forming matrix. Since the ion migration occurs on the picosecond time scale, the primary rearrangement of the glass network adjacent to an ionic site occurs at rates orders of magnitude higher than those of the critical minimum values, so the matrix demonstrates brittle-elastic response to the arising strain even at temperatures well above Tg, which explains, among other things, why mixed alkali effect is observable in glass melts.Comment: 6 pages, 1 figure, 1 tabl