We develop a framework for assessing security market quality, relating five elements of market design to three metrics of market integrity and two metrics of market efficiency. We empirically implement this integrity–efficiency MQ framework by testing a hypothesis that trade-based ramping manipulation at the close raises execution costs on 24 security markets worldwide. Estimating a simultaneous equations model of ramping incidence, spreads, and the probability of deploying real-time surveillance, we show that quoted bid-ask spreads are positively related to the incidence (...) of MTC across seven liquidity deciles. The magnitude is economically significant; improving market integrity by cutting MTC in half reduces spreads 6–11 %. Allowing direct market access in conjunction with RTS, conducting auctions at the close, and developing regulations that require surveillance, all reduce MTC and thereby lower spreads, assuring better market integrity and enhancing market efficiency. Introducing circuit breakers or prohibiting shorts poses integrity–efficiency tradeoffs. (shrink)

After having defined the KARO logic for specifying intelligent agents in earlier work we now turn to the question how to realise agents specified in the KARO framework. To this end we look at agent programming languages that we have defined, and investigate how programs in these languages can be linked to the KARO logic.

The past 50 years have seen an accumulation of evidence suggesting that associative learning depends on high-level cognitive processes that give rise to propositional knowledge. Yet, many learning theorists maintain a belief in a learning mechanism in which links between mental representations are formed automatically. We characterize and highlight the differences between the propositional and link approaches, and review the relevant empirical evidence. We conclude that learning is the consequence of propositional reasoning processes that cooperate with the unconscious processes involved (...) in memory retrieval and perception. We argue that this new conceptual framework allows many of the important recent advances in associative learning research to be retained, but recast in a model that provides a firmer foundation for both immediate application and future research. (shrink)

When the COVID-19 surge hit New York City hospitals, the Division of Medical Ethics at Weill Cornell Medical College, and our affiliated ethics consultation services, faced waves of ethical issues sweeping forward with intensity and urgency. In this article, we describe our experience over an eight-week period (16 March through 10 May 2020), and describe three types of services: clinical ethics consultation (CEC); service practice communications/interventions (SPCI); and organizational ethics advisement (OEA). We tell this narrative through the prism of time, (...) describing the evolution of ethical issues and trends as the pandemic unfolded. We delineate three phases: anticipation and preparation, crisis management, and reflection and adjustment. The first phase focused predominantly on ways to address impending resource shortages and to plan for remote ethics consultation, and CECs focused on code status discussions with surrogates. The second phase was characterized by the dramatic convergence of a rapid increase in the number of critically ill patients, a growing scarcity of resources, and the reassignment/ redeployment of staff outside their specialty areas. The third phase was characterized by the recognition that while the worst of the crisis was waning, its medium- and long-term consequences continued to pose immense challenges. We note that there were times during the crisis that serving in the role of clinical ethics consultant created a sense of dis-ease as novel as the coronavirus itself. In retrospect we learned that our activities far exceeded the familiar terrain of clinical ethics consultation and extended into other spheres of organizational life in novel ways that were unanticipated before this pandemic. To that end, we defined and categorized a middle level of ethics consultation, which we have termed service practice communication intervention (SPCI). This is an underappreciated dimension of the work that ethics consult services are capable of in times of crisis. We believe that the pandemic has revealed the many enduring ways that ethics consultation services can more robustly contribute to the ethical life of their institutions moving forward. (shrink)

Advanced practice nursing is an expanding field within many healthcare environments around the world. The scope and particular focus of an advanced practice nurse’s role is highly variable and thus the ethical challenges they face are equally diverse. Yet, the dominant existing ethics pedagogies used in the nursing context have been described as not fit-for-purpose. Existing pedagogies do not adequately prepare APN candidates to meet the ethical challenges they will encounter in practice. Applying an arts-based pedagogy in ethics education for (...) advanced practice nurses has the capacity to provide effective ethics learning. This article reports on the value of a multidisciplinary pedagogy used in a graduate course in nursing leadership, law and ethics for advanced practice at an Australian university. Written in a multidisciplinary mode that allies with the pedagogy it presents, it addresses the key pedagogical challenges and opportunities of teaching ethics through an innovative arts-based pedagogy centred upon the changing depictions of the human person in works of art housed in a major state-funded art gallery. (shrink)

Advanced practice nursing is an expanding field within many healthcare environments around the world. The scope and particular focus of an advanced practice nurse’s role is highly variable and thus the ethical challenges they face are equally diverse. Yet, the dominant existing ethics pedagogies used in the nursing context have been described as not fit-for-purpose. Existing pedagogies do not adequately prepare APN candidates to meet the ethical challenges they will encounter in practice. Applying an arts-based pedagogy in ethics education for (...) advanced practice nurses has the capacity to provide effective ethics learning. This article reports on the value of a multidisciplinary pedagogy used in a graduate course in nursing leadership, law and ethics for advanced practice at an Australian university. Written in a multidisciplinary mode that allies with the pedagogy it presents, it addresses the key pedagogical challenges and opportunities of teaching ethics through an innovative arts-based pedagogy centred upon the changing depictions of the human person in works of art housed in a major state-funded art gallery. (shrink)

Advanced practice nursing is an expanding field within many healthcare environments around the world. The scope and particular focus of an advanced practice nurse’s role is highly variable and thus the ethical challenges they face are equally diverse. Yet, the dominant existing ethics pedagogies used in the nursing context have been described as not fit-for-purpose. Existing pedagogies do not adequately prepare APN candidates to meet the ethical challenges they will encounter in practice. Applying an arts-based pedagogy in ethics education for (...) advanced practice nurses has the capacity to provide effective ethics learning. This article reports on the value of a multidisciplinary pedagogy used in a graduate course in nursing leadership, law and ethics for advanced practice at an Australian university. Written in a multidisciplinary mode that allies with the pedagogy it presents, it addresses the key pedagogical challenges and opportunities of teaching ethics through an innovative arts-based pedagogy centred upon the changing depictions of the human person in works of art housed in a major state-funded art gallery. (shrink)