The equality of 3-manifold invariants

The invariants of 3-manifolds defined by Kuperberg for involutory Hopf algebras and those defined by the authors for spherical Hopf algebras are the same for Hopf algebras on which they are both defined.Comment: 8 pages, definition of state sum invariant improved for clarity, plus minor typos corrected. With 3 postscript figures. further change: BoxedEPSF macro now include

“Crossing the river while feeling the rocks”: Incremental land reform and its impact on rural welfare in China

millions fed, food security, Land reform, Land tenure, Collectivized agriculture, Household responsibility,

The natural resources of San Diego Bay; Their status and future

The study of the natural resources of San Diego Bay is a part of a high priority inventory and assessment program conducted by the Department of Fish and Game. This report is a guide for citizens, planners, administrators, and all others interested in the use and development of coastal lands and waters. It documents the status and future of natural resources that should be a part of the inheritance of future generations. References appended provide the interested and concerned reader with sources of more specific information. One of a scheduled series, this publication follows similar documents on Upper New-port Bay (Orange County), Goleta Slough (Santa Barbara County), Bolinas Lagoon (Marin County), and Elkhorn Slough (Monterey County). Preparation of this report has been supported by Fish and Wild- Life Preservation funds and by Pittman-Robertson Federal Aid to wildlife programs. (124 pp.

Observing The Hidden Sector

We study the effects of renormalization due to hidden-sector dynamics on observable soft supersymmetry-breaking parameters in the minimal supersymmetric extension of the Standard Model (MSSM), under various hypotheses about their universality at a high input scale. We show that hidden-sector renormalization effects may induce the spurious appearance of unification of the scalar masses at some lower scale, as in mirage unification scenarios. We demonstrate in simple two-parameter models of the hidden-sector dynamics that the parameters may in principle be extracted from experimental measurements, rendering the hidden sector observable. We also discuss the ingredients that would be necessary to carry this programme out in practice.Comment: 38 pages, 13 figures, uses UApreprint.cls and subfigure.sty (included

CONCEPTOS SOBRE TENENCIA DE LA TIERRA

Land tenure--terminology, Right of property -- Terminology, Tenure systems -- Terminology, Resource /Energy Economics and Policy,

COUNTRY PROFILES OF LAND TENURE: AFRICA, 1996

These Country Profiles represent a new edition of a continent-wide set of profiles prepared and published by the Land Tenure Center in 1986. This new volume reflects a decade of intensive work on the continent by LTC and a very considerable deepening of knowledge and understanding of land tenure issues in Africa. It addresses events of the past ten years, which have been substantial in many of the countries covered. Land tenure continues to be a volatile policy domain. The standard topics from the earlier profiles have been revised to take into account new development concerns. The following are examples of topics covered: national land policy and legal framework, replacement and adaptation of indigenous tenure systems, tenure constraints and opportunities, economic growth and food security strategies, agricultural development, natural resource management and conservation, democratization and governance, gender dimensions, present policy position and reform debates, and implications for policy reform and programming. Three regional syntheses have been prepared, for West Africa, the Greater Horn of Africa, and Southern Africa.Land tenure--Africa, Land tenure--Law and legislation--Africa, Land tenure--Government policy--Africa, Land administration--Africa, Tenure systems--Africa, Land Economics/Use,

The natural resources of Carpinteria Marsh: their status and future

The purpose of this report is: 1) to document the natural resources of Carpinteria Marsh, 2) outline the uses those resources receive, 3) enumerate the problems and conflicts of use that affect those resources, and 4) recommend measures that will protect and enhance the marsh and its resources. It is intended as a guide for citizens, planners and administrators of all private and public entities interested in the status and future of the marsh. This report has been prepared under contract to and fully funded by the Office of Biological Services of the U.S. Fish and Wildlife Service. The goals and purpose of this federal office are to review the impact on fish and wildlife resources of land, mineral and water development practices, such as offshore oil and gas exploration, development and production; construction of inshore pipeline canals and refineries; power plant construction/operation and urban development. This report, and five other southern California reports, covering Agua Hedionda (San Diego County), Anaheim Bay-Huntington Harbor (Orange County), Mugu Lagoon (Ventura County), the Northern Santa Barbara County Coastal Wetlands and the Nipomo Dunes and Wetlands (San Luis Obispo County), are scheduled to be part of the Department's "Coastal Wetland Series" that includes reports on the natural resources of Upper Newport Bay (Orange County), Goleta Slough (Santa Barbara county), Bolinas Lagoon (Marin County), Elkhorn Slough (Monterey County), San Diego Bay and Los Penasquitos Lagoon (San Diego County), Morro Bay (San Luis Obispo County), Humboldt Bay and the Eel River Delta (Humboldt County), Lake Earl and the Smith River Delta (Del Norte County) and Bodega Harbor (Sonoma County). (103pp.

Adaptive learning, endogenous inattention, and changes in monetary policy

This paper develops an adaptive learning formulation of an extension to the Ball, Mankiw, and Reis (2005) sticky information model that incorporates endogenous inattention. We show that, following an exogenous increase in the policymaker’s preferences for price vs. output stability, the learning process can converge to a new equilibrium in which both output and price volatility are lower.Monetary policy ; Information theory