6,269 research outputs found
Biological Carbon Sequestration and Carbon Trading Re-Visited
Biological activities that sequester carbon create CO2 offset credits that could obviate the need for reductions in fossil fuel use. Credits are earned by storing carbon in terrestrial ecosystems and wood products, although CO2 emissions are also mitigated by delaying deforestation, which accounts for one-quarter of anthropogenic CO2 emissions. However, non-permanent carbon offsets from biological activities are difficult to compare with each other and with emissions reduction because they differ in how long they prevent CO2 from entering the atmosphere. This is the duration problem. It results in uncertainty and makes it hard to determine the legitimacy of biological activities in mitigating climate change. Measuring, verifying and monitoring the carbon sequestered in sinks greatly increases transaction costs and leads to rent seeking by sellers of dubious sink credits. While biological sink activities undoubtedly help mitigate climate change and should not be neglected, it is shown that there are limits to the substitutability between temporary offset credits from these activities and emissions reduction, and that this has implications for carbon trading. A possible solution to inherent incommensurability between temporary and permanent credits is also suggested
Broadening the New Perspective on Paul: Paul and the Ethnographical Debate of His Time—The Criticism of Jewish and Pagan Ancestral Customs (1 Thess 2:13-16)
George H. van Kooten, “Broadening the New Perspective on Paul: Paul and the Ethnographical Debate of His Time—The Criticism of Jewish and Pagan Ancestral Customs (1 Thess 2:13-16),” in Abraham, the Nations, and the Hagarites: Jewish, Christian, and Islamic Perspectives on Kinship with Abraham (ed. Martin Goodman, George H. van Kooten, and Jacques T.A.G.M. van Ruiten; Themes in Biblical Narrative 13; Leiden and Boston: Brill, 2010), 319-344.
Philosophical Criticism of Genealogical Claims and Stoic Depoliticization of Politics: Greco-Roman Strategies in Paul's Allegorical Interpretation of Hagar and Sarah (Gal 4:21-31)
George H. van Kooten, “Philosophical Criticism of Genealogical Claims and Stoic Depoliticization of Politics: Greco-Roman Strategies in Paul’s Allegorical Interpretation of Hagar and Sarah (Gal 4:21-31),” in Abraham, the Nations, and the Hagarites: Jewish, Christian, and Islamic Perspectives on Kinship with Abraham (ed. Martin Goodman, George H. van Kooten, and Jacques T.A.G.M. van Ruiten; Themes in Biblical Narrative 13; Leiden and Boston: Brill, 2010), 361-385.
MODELING THE EFFECT OF UNCERTAINTY ON TIMBER HARVEST: A SUGGESTED APPROACH AND EMPIRICAL EXAMPLE
A method is suggested for modeling uncertainty when there is a lack of information concerning the effect of forest management decisions on tree growth. Dynamic programming is used to investigate the optimality of alternative management strategies. The model is illustrated with an empirical example for a boreal forest region of western Canada. Three tentative conclusions follow: (a) silvicultural strategies to reduce uncertainty or to increase stand growth may not be worth pursuing, at least in northern forests; (b) the discounted cost of ignoring uncertainty may be substantial if taken over the entire forest; and (c) given uncertain forest growth, flexible harvest policies are preferred to a fixed harvest age.Agricultural Finance, Resource /Energy Economics and Policy, Risk and Uncertainty,
Wind Power: The Economic Impact of Intermittency
Wind is the fastest growing renewable energy source for generating electricity, but economic research lags behind. In this study, therefore, we examine the economics of integrating large-scale wind energy into an existing electrical grid. Using a simple grid management model to investigate the impact of various levels of wind penetration on grid management costs, we show that costs of reducing CO2 emissions by relying more on wind power depend on the generation mix of the existing electrical grid and the degree of wind penetration, with costs ranging from 1000 per tonne of CO2 reduced. Costs are lowest if wind displaces large amounts of fossil fuel production and there is some hydroelectric power to act as a buffer. Hydro capacity has the ability to store wind generated power for use at more opportune times. If wind does nothing more than replace hydro or nuclear power, however, the environmental benefits (reduced CO2 emissions) of investing in wind power are smal
Consumer Acceptability in Flower Chains: How Can We Determine What the Final Customers Really Want?
When we look at the ornamental supply chain in the Netherlands as a Value Chain (Porter, 1998) it strikes us that most actors in the chain are obsessed by the product and have no idea how the value of these products is developed throughout the entire production and supply chain. Any value chain starts with the value a group of consumers attributes to the product. So it all starts with finding out what consumers want and then finding the most cost effective way of delivering that product with the desired attributes to these consumers. In the USA the South American producers expected to be able to compete with the local production by offering the product (cut flowers) at a lower price (Reid, 2002). In the first instance this worked very well and the local production virtually disappeared. However the quality of the imported product was a dismal failure and while imports surged, total flower consumption plummeted in the 90s. In the UK the retail chains such as Sainsbury’s and Tesco wanted to improve their ornamental categories. They invented the ‘Vase Life Guarantee’ and improved their quality considerably. This resulted in an increase in market share from 18 to 60% over 15 years, while the total flower consumption in the UK doubled in the past 15 years. A research will be shown on the response of stakeholders in the ornamental industry and consumers on the question whether they would see the ‘Vase Life Guarantee’ as a value addition in the supply chain. This research was done in the UK and the Netherlands (where no vase life guarantee was used explicitly in the retail) at the turn of the millennium. It clearly shows the difference between the judgements of the stakeholders versus the opinions of the consumers. If we want to create Value Added Chains in the ornamental industry it is about time to find out what the consumer really wants
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