E-collaboration users tend to abandon their technology when they feel dissatisfied by their experience, even if they have been productive. It is therefore important to understand the causes of satisfaction so we can design and deploy e-collaboration in ways that make users both productive and satisfied. We advance a theory proposing satisfaction as a function of a perceived change in the likeli...

Executive Summary Increasing global demand for food and the need to address climate change risk make it ever more urgent to both protect ecosystems and use land more productively and efficiently. Brazil is a key player in this context and has made significant gains in recent decades. Between 1970 and 2006, its average national cattle farm productivity doubled and its average national crop farm ...

This paper aims to introduce and discuss six challenges and issues facing the development of SDIs which will be able to meet the sustainable development objectives of society. These issues and challenges include: SDI to facilitate spatially enabled government Role of government, private and academic sectors Development of SDI vision, mission and road map – where are we heading? SDI to facilitat...

Title of Dissertation: THREE ESSAYS ON NON-BALANCED ECONOMIC GROWTH, ECONOMIC GEOGRAPHY, AND THE REGULATION OF PUBLIC LAND IN THE UNITED STATES Michael H. Taylor, Doctor of Philosophy, 2014 Dissertation directed by: Professor Robert G. Chambers Department of Agricultural and Resource Economics This dissertation is comprised of three essays. The first essay, "The Spatial Consequences of Non-Bala...

Land registration and cadastral systems exist in great variety. This paper describes the rich history of Zambian land tenure systems and discusses the present land tenure system. Zambia has a dual land tenure system: customary tenure and formal title registration. In the customary system the chiefs regulate the allocation of the land. They rule with the consent of their people. This system is c...

Statistical analysis of land-use change plays an important role in sustainable land management and has received increasing attention from scholars and administrative departments. However, the statistical process involving spatial overlay analysis remains difficult and needs improvement to deal with mass land-use data. In this paper, we introduce a spatio-temporal flow network model to reveal th...

The Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expresse...

The relative influence of habitat loss, fragmentation and matrix heterogeneity on the viability of populations is a critical area of conservation research that remains unresolved. Using simulation modelling, we provide an analysis of the influence both patch size and patch isolation have on abundance, effective population size (N(e)) and F(ST). An individual-based, spatially explicit population...

BACKGROUND Buruli ulcer (BU), one of 17 neglected tropical diseases, is a debilitating skin and soft tissue infection caused by Mycobacterium ulcerans. In tropical Africa, changes in land use and proximity to water have been associated with the disease. This study presents the first analysis of BU at the village level in southwestern Ghana, where prevalence rates are among the highest globally,...