Co-optimization of enhanced oil recovery and carbon sequestration

In this paper, we present an economic analysis of CO₂-enhanced oil recovery (EOR). This technique entails injection of CO₂ into mature oil fields in a manner that reduces the oil's viscosity, thereby enhancing the rate of extraction. As part of this process, significant quantities of CO₂ remain sequestered in the reservoir. If CO₂ emissions are regulated, oil producers using EOR should therefore be able to earn revenues from sequestration as well as from oil production. We develop a theoretical framework that analyzes the dynamic co-optimization of oil extraction and CO₂ sequestration, through the producer's choice of the fraction of CO₂ in the injection stream at each moment. We find that the optimal fraction of CO₂ is likely to decline monotonically over time, and reach zero before the optimal termination time. Numerical simulations, based on an ongoing EOR project in Wyoming, confirm this result. We also find that cumulative sequestration is less responsive to the carbon tax than to the oil price. Only at very high taxes does a tradeoff between revenues from oil output and sequestration arise.     

An experimental study of blind proficiency tests in forensic science

We conducted a series of sender?Creceiver experiments to study the consequences of implementing a regime of blind proficiency tests in forensic science to reduce error rates and improve the criminal justice system. Senders are our surrogate for forensic laboratories and receivers, for the judge or jury. Our experimental surrogate (random audits with a penalty) for blind proficiency tests reduced sender error rates by as much as 46% depending on the level of experimentally induced bias. When penalties improve information quality, receiver error rates fell by as much as 26% depending on the level of the sender bias. We also find that the penalty must be large relative to the payoff to induce the reduction in errors. Our results suggest that a regime of blind proficiency testing has the potential to reduce forensic science errors.     

The evolution of State-Local balance sheets in the United States, 1953–2013

State and local debt in the United States more than doubled as a share of gross domestic product between 1953 and 2007. Using a historical accounting framework, we find that there is no straightforward relationship over time between state and local deficits and debt growth. We find that only 17 percent of the variation in aggregate state–local debt ratios comes from variation in the fiscal balance. This is especially true in the 1980s, the period of most rapid increase in state–local debt ratios. Before 1980, there were small but persistent deficits, but stable debt ratios. In the 1980s, state and local sectors shifted toward budget surpluses but saw rising debt ratios. This is explained by a faster pace of asset accumulation. Our results demonstrate the autonomy of balance sheet variables and suggest that changing debt ratios cannot be explained by real income and expenditure flows.     

RENOVATIO MONETAE: WHEN GESELL TAXES WORKED

Gesell taxes on money have recently received attention as a way of alleviating the zero lower bound on interest rates. Less known is that such taxes generated seigniorage in medieval Europe for around two centuries. When a Gesell tax was levied, current coins ceased to be legal and had to be exchanged into new coins for a fee. Using a cash-in-advance model, we analyze under what conditions agents exchange coins and the tax generates revenues. A low exchange fee, high punishments for using old coins, and a long time period between re-mintings induce people to use new coins.     

Promotional message strategies for disability charities' employment services

One hundred and eight managers responsible for employee recruitment completed mail questionnaires designed to assess their affective, cognitive and conative reactions to two promotional messages for a disability charity's employment (job‐finding) service. The first message contained a mainly altruistic appeal; the second emphasised the financial and other practical benefits of employing a disabled person. Overall the sample reacted more favourably to the latter communication. Heads of department and general managers found the altruistic message to be significantly less appealing than did personnel or human resources managers. Responses were significantly influenced by a recruiting manager's personal experiences of disabled individuals; by the state of the labour market; and by perceptions (possibly unfounded) that non‐disabled employees within a firm would feel uncomfortable if they were made to work alongside a disabled person. Copyright © 2001 Henry Stewart Publications     

International Benchmarking for Monopoly Price Regulation: The Case of Australian Gas Distribution

Price-cap regulation is widely applied to network industries. However, regulators often encounter the problem of asymmetric information on efficient costs. Benchmarking can help reduce this problem. We present a benchmarking analysis, conducted for an Australian regulator, that derives measures of efficiency for Australian gas distributors relative to U.S. counterparts. Several techniques, such as data envelopment analysis and stochastic frontier analysis, are used to ensure that our measures are robust to methodology choice. We conclude with a discussion of how the regulator used the benchmarking results, along with other information, to help it determine appropriate price caps.     

Antecedents to supplier integration in the automotive industry: A multiple-case study of foreign subsidiaries in China

Supplier integration has become an important concept for improving supply chain performance. The aim of this paper is to identify factors that facilitate and inhibit supplier integration in the context of the Chinese automotive industry. An inductive approach based on grounded theory was chosen as the research methodology, where data was collected through 30 detailed case interviews with subsidiaries of foreign automotive companies operating in China. The results indicate that buyer-side leadership is an important antecedent for building motivation, trust, and commitment among suppliers and for shaping their mindsets. This, in turn, facilitates strategic alignment and enables suppliers to build collaborative capabilities, which are finally shown to be a key enabler for successful supplier integration.     

Strategic Preemption in a Common Property Resource: A Continuous Time Approach

The threat of future entry affects the exploitation of common property resources in important ways. An incumbent has a strategic incentive to manipulate the resource stock to deter entry or to harvest more stock prior to entry rather than share the resource with the entrant. It is possible that the threat of potential entry can lead to the extinction of the resource even though actual competition would result in a steady state with a positive stock level.