Free radicals are generally perceived as highly reactive species which are harmful to biological systems. There are, however, a number of enzymes that use carbon‐based radicals to catalyse a variety of important and unusual reactions. The most prominent example is ribonucleotide reductase, an enzyme which is crucial for the synthesis of DNA. In general, radicals are used to remove hydrogen from unreactive positions in the substrate, and in this way the substrate is activated to undergo chemical transformations that would otherwise (...) be difficult to achieve. Several different mechanisms have evolved which allow enzymes to generate and maintain radicals in increasingly aerobic enviroments. An unexpected finding is the existance of stable protein‐based radicals, residing on a variety of amino‐acid side chains, which serve to link the radical‐generating and catalytic sites and to store the radical between turnovers. (shrink)

This collection, the first of its kind, brings together specially commissioned academic essays to mark fifty years since the death of John Kennedy Toole.

An exploratory model is presented as a heuristic to indicate how individual perceptions of corporate reputation (before joining) and corporate ethical values (after joining) generate specific individual organizational senses of fit. The paper suggests that an ethical dimension of person-organization fit may go some way in explaining superior acquisition and retention of staff by those who are attracted to specific organizations by levels of corporate social performance consonant with their ethical expectations, or who remain with them by virtue of better (...) personal ethical fits with extant organizational ethical values. Specifically, the model suggests that individual misfits that arise from ethical expectations that either exceed or fall short of perceived organizational ethical performances lead to problematic acquisition and retention behavioural outcomes. (shrink)

An exploratory model is presented as a heuristic to indicate how individual perceptions of corporate reputation (before joining) and corporate ethical values (after joining) generate specific individual organizational senses of fit. The paper suggests that an ethical dimension of person-organization fit may go some way in explaining superior acquisition and retention of staff by those who are attracted to specific organizations by levels of corporate social performance consonant with their ethical expectations, or who remain with them by virtue of better (...) personal ethical fits with extant organizational ethical values. Specifically, the model suggests that individual misfits that arise from ethical expectations that either exceed or fall short of perceived organizational ethical performances lead to problematic acquisition and retention behavioural outcomes. (shrink)

Significant associations have been found between specific human leukocyte antigen (HLA) alleles and organ transplant rejection, autoimmune disease development, and the response to infection. Traditional searches for disease associations have conventionally measured risk associated with the presence of individual HLA alleles. However, given the high level of HLA polymorphism, the pattern of amino acid variability, and the fact that most of the HLA variation occurs at functionally important sites, it may be that a combination of variable amino acid sites shared (...) by several alleles (shared epitopes) are better descriptors of the actual causative genetic variants. Here we describe a novel approach to genetic association analysis in which genes/proteins are broken down into smaller sequence features and then variant types defined for each feature, allowing for independent analysis of disease association with each sequence feature variant type. We have used this approach to analyze a cohort of systemic sclerosis patients and show that a sequence feature composed of specific amino acid residues in peptide binding pockets 4 and 7 of HLA-DRB1 explains much of the molecular determinant of risk for systemic sclerosis. (shrink)

There is wide agreement that community engagement is important for many research types and settings, often including interaction with ‘representatives’ of communities. There is relatively little published experience of community engagement in international research settings, with available information focusing on Community Advisory Boards or Groups (CAB/CAGs), or variants of these, where CAB/G members often advise researchers on behalf of the communities they represent. In this paper we describe a network of community members (‘KEMRI Community Representatives’, or ‘KCRs’) linked to a (...) large multi-disciplinary research programme on the Kenyan Coast. Unlike many CAB/Gs, the intention with the KCR network has evolved to be for members to represent the geographical areas in which a diverse range of health studies are conducted through being typical of those communities. We draw on routine reports, self-administered questionnaires and interviews to: 1) document how typical KCR members are of the local communities in terms of basic characteristics, and 2) explore KCR's perceptions of their roles, and of the benefits and challenges of undertaking these roles. We conclude that this evolving network is a potentially valuable way of strengthening interactions between a research institution and a local geographic community, through contributing to meeting intrinsic ethical values such as showing respect, and instrumental values such as improving consent processes. However, there are numerous challenges involved. Other ways of interacting with members of local communities, including community leaders, and the most vulnerable groups least likely to be vocal in representative groups, have always been, and remain, essential. (shrink)

There is currently debate between deflationists and anti-deflationists about the ontology of persisting objects. Some deflationists think that disputes between, for example, four-dimensionalists (e.g. Ted Sider and David Lewis) and quasi-nihilists (e.g. Peter Van Inwagen and Trenton Merricks) are merely verbal disputes. Anti-deflationists deny this. Eli Hirsch is a deflationist who maintains that many ontological disputes are merely verbal. Theodore Sider maintains that the disputes are not merely verbal. Hirsch and Sider are thus engaged in a metaontological dispute. In this (...) paper, I argue that Hirsch's metaontological dispute with Sider is, by Hirsch's own lights, itself merely verbal. I conclude that the mere verbalness of his metaontological dispute with Sider suggests that Hirsch's account of what makes a dispute merely verbal may be problematic. (shrink)

Modern approaches to public relations cluster into three camps along a continuum: conflict-oriented egoism, e.g. forms of contingency theory that focus almost exclusively on the wellbeing of an entity; redressed egoism, e.g. subsidies to redress PR's egoistic nature; and forms of self-interested cooperation, e.g. fully functioning society theory. Public Relations, Cooperation, and Justice draws upon interdisciplinary research from evolutionary biology, philosophy, and rhetoric to establish that relationships built on cooperation and justice are more productive than those built on conflict and (...) egoistic competition. Just as important, this innovative book shuns normative, utopian appeals, offering instead only empirical, materialistic evidence for its conclusions. This is a powerful, multidisciplinary, and well-documented analysis, including specific strategies for the enactment of PR as a quest for cooperation and justice, which aligns the discipline of public relations with basic human nature. It will be of interest to scholars and advanced students of public relations and communication ethics. (shrink)

Shifting the focus from fear, guilt, and indignation related to deteriorating environmental quality, the authors hypothesized that people who see greater potential for restorative experiences in natural environments also do more to protect them by behaving ecologically, as with recycling or reduced driving. University students rated a familiar freshwater marsh in terms of being away, fascination, coherence, and compatibility, qualities of restorative person-environment transactions described in attention restoration theory. They also reported on their performance of various ecological behaviors. The (...) authors tested a structural equation model with data from a randomly drawn subset of participants and then confirmed it with the data from a second subset. For the combined subsets, perceptions of the restorative qualities predicted 23% of the variance in general ecological behavior. As the only direct predictor, fascination mediated the influences of coherence, being away, and compatibility. (shrink)

Many people think that the amount of evil and suffering we observe provides important and perhaps decisive evidence against the claim that a loving God created our world. Yet almost nobody worries about the ethics of human procreation. Can these attitudes be consistently maintained? This chapter argues that the most obvious attempts to justify a positive answer fail. The upshot is not that procreation is impermissible, but rather that we should either revise our beliefs about the severity of global arguments (...) from evil or develop new and better defenses of human procreation. Although both possibilities are worthy of pursuit, this chapter focuses on the latter possibility. (shrink)

As a relatively young profession, public relations seeks a realistic ethics foundation. A continuing debate in public relations has pitted journalistic/objectivity ethics against the advocacy ethics that may be more appropriate in an adversarial society. As the journalistic/objectivity influence has waned, the debate has evolved, pitting the advocacy/adversarial foundation against the two-way symmetrical model of public relations, which seeks to build consensus and holds that an organization itself, not an opposing public, sometimes may need to change to build a productive (...) relationship. A similar battle between adversarial advocacy and symmetry occurred during the emergence of rhetoric in the Athens of the 4th century B.C. Plato and Aristotle favored adversarial/advocacy rhetoric, whereas Isocrates favored a symmetrical rhetoric. Four criteria of comparison of those rhetorics are examined: success of the respective schools, success of the respective graduates, the evaluation of later Roman rhetoricians, and the impact on the future of education. History shows that Isocrates's symmetrical rhetoric clearly was more effective than its adversarial/advocacy rivals. Recent studies of the two-way symmetrical model concur, indicating that it may well be the most effective foundation for public relations ethics. (shrink)

Background: There is general consensus internationally that unfair distribution of the benefits of research is exploitative and should be avoided or reduced. However, what constitutes fair benefits, and the exact nature of the benefits and their mode of provision can be strongly contested. Empirical studies have the potential to contribute viewpoints and experiences to debates and guidelines, but few have been conducted. We conducted a study to support the development of guidelines on benefits and payments for studies conducted by the (...) KEMRI-Wellcome Trust programme in Kilifi, Kenya. Methods: Following an initial broad based survey of cash, health services and other items being offered during research by all programme studies (n = 38 studies), interviews were held with research managers (n = 9), and with research staff involved in 8 purposively selected case studies (n = 30 interviewees). Interviews explored how these ‘benefits’ were selected and communicated, experiences with their administration, and recommendations for future guidelines. Data fed into a consultative workshop attended by 48 research staff and health managers, which was facilitated by an external ethicist.FindingsThe most commonly provided benefits were medical care (for example free care, and strengthened quality of care), and lunch or snacks. Most cash given to participants was reimbursement of transport costs (for example to meet appointments or facilitate use of services when unexpectedly sick), but these payments were often described by research participants as benefits. Challenges included: tensions within households and communities resulting from lack of clarity and agreement on who is eligible for benefits; suspicion regarding motivation for their provision; and confusion caused by differences between studies in types and levels of benefits. Conclusions: Research staff differed in their views on how benefits should be approached. Echoing elements of international benefit sharing and ancillary care debates, some research staff saw research as based on goodwill and partnership, and aimed to avoid costs to participants and a commercial relationship; while others sought to maximise participant benefits given the relative wealth of the institution and the multiple community needs. An emerging middle position was to strengthen collateral or indirect medical benefits to communities through collaborations with the Ministry of Health to support sustainability. (shrink)

We report an experiment investigating the “special-process” theory of insight problem solving, which claims that insight arises from non-conscious, non-reportable processes that enable problem re-structuring. We predicted that reducing opportunities for speech-based processing during insight problem solving should permit special processes to function more effectively and gain conscious awareness, thereby facilitating insight. We distracted speech-based processing by using either articulatory suppression or irrelevant speech, with findings for these conditions supporting the predicted insight facilitation effect relative to silent working or thinking (...) aloud. The latter condition was included to investigate the currently contested effect of “verbal overshadowing” on insight, whereby thinking aloud is claimed to hinder the operation of special, non-reportable processes. Whilst verbal overshadowing was not evident in final solution rates, there was nevertheless support for verbal overshadowing up to and beyond.. (shrink)

(2001). Autonomous Learners and the Learning Society: systematic perspectives on the practice of teaching in Higher Education. Educational Philosophy and Theory: Vol. 33, No. 3-4, pp. 381-395.

In this paper, we will consider the neuro-cognitive systems involved in mediating morality. Five main claims will be made. First, that there are multiple, partially separable neuro-cognitive architectures that mediate specific aspects of morality: social convention, care-based morality, disgust-based morality and fairness/justice. Second, that all aspects of morality, including social convention, involve affect. Third, that the neural system particularly important for social convention, given its role in mediating anger and responding to angry expressions, is ventrolateral prefrontal cortex. Fourth, that the (...) neural systems particularly important for care-based morality are the amygdala and medial orbital frontal cortex. Fifth, that while Theory of Mind is not a prerequisite for the development of affect-based 'automatic moral attitudes', it is critically involved in many aspects of moral reasoning. (shrink)

The concept of “public participation” is currently one of great interest to researchers and policy makers. In response to a perceived need for greater public involvement in decision making and policy formation processes on the part of both policymakers and the general public, a variety of novel mechanisms have been developed, such as the consensus conference and citizens jury, to complement traditional mechanisms, such as the public meeting. However, the relative effectiveness of the various mechanisms is unclear, as efforts at (...) evaluation have been sparse. In this article, the authors describe an evaluation of a two-day “deliberative conference” on the topic of radiation dose assessment. The authors detail the evaluation framework that they adopt and describe the instruments that they have developed to determine the attainment of the evaluationcriteria stipulated in that framework. They then describe the participation exercise that they have evaluated. Finally, they apply the instruments to assess the effectiveness of the exercise, and discuss the results and their implications for the conduct of evaluations and the use of this particular participation mechanism. (shrink)

At Supplices 337, as part of the increasingly tense stichomythic testing between the Danaids and Pelasgus, the Danaids utter an emotional question, which reads in all the MSS, that is M and the apographa Ma, Mb, Mc, Me, Md.

Originally titled “Is It Murder in Tennessee to Kill a Chimpanzee,” this article argues in some detail that typical legal definitions of “murder” as involving the intentional killing of “a reasonable being” would require classifying the intentional killing of chimpanzees as murder.