It is fairly well known that there are fundamental differences between adaptive control of continuous-time and discrete-time nonlinear systems. In fact, even for the seemingly simple single-input single-output control system yt+1 = θ1f(yt) + ut + wt+1 with a scalar unknown parameter θ1 and noise disturbance {wt}, and with a known function f(·) having possible nonlinear growth rate characterized...

For a contingent valuation (CV) study of a bundle of water quality improvements, this paper tests whether the sum of the estimated willingness to pay (WTP) for each individual part of the package, evaluated incrementally, equals the estimated WTP for the entire bundle—as implied by standard utility theory. This is the first application of the adding-up test using incremental parts and Carson an...

Heightened by emerging web-based technologies through which it has become easier for anyone to engage in illegal or unethical appropriation and use another’s personal information, the debate is ongoing concerning how best to teach ethics in order to maximize its impact on learners. Currently, ethics is taught through a variety of methods using various resources. This quasi-experimental study ex...

This paper engages with the question of what it is to 'do good medical ethics' in two ways. It begins with an exploration of what it might mean to say that health professionals practise good medical ethics as part of practising good ethical medicine. Using the example of the Genethics Club, a well-established national ethics forum for genetics professionals in the UK, the paper develops an acco...

Introduction Corporate codes of ethics are one of several influenc es on business ethics within and across cultures. In a model that goes beyond philosophically-based ethics, Stajkovic and Luthans (1 997) use social-cognitive theory as a springboard to identify factors influe ncing business ethics standards and conduct. They propose that a person’s perception of ethical sta ndards and subsequen...

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We study auctions whose bidders are embedded in a social or economic network. As a result, even bidders who do not win the auction themselves might derive utility from the auction, namely, when a friend wins. On the other hand, when an enemy or competitor wins, a bidder might derive negative utility. Such spite and altruism will alter the bidding strategies. A simple and natural model for bidde...