Warriors, heroes and companions: negotiating masculinity in Viking-Age England

Detailed analysis of the construction of gender identities has transformed our understanding of many aspects of early medieval society, yet the study of the Vikings in Britain has largely remained immune to this branch of scholarship. In responding to this lacuna, this paper examines the gendered dimension of the funerary record of the Scandinavians in England in the ninth and tenth centuries, and suggests that the emphasis on masculine display, in both the burial and the sculptural record, is not merely a quirk of survival, but rather it has much to reveal about the negotiation of lordship in the context of conquest and settlement

Justice and the fetus: rawls, children, and abortion

In a footnote to the first edition of Political Liberalism, John Rawls introduced an example of how public reason could deal with controversial issues. He intended this example to show that his system of political liberalism could deal with such problems by considering only political values, without the introduction of comprehensive moral doctrines. Unfortunately, Rawls chose “the troubled question of abortion” as the issue that would illustrate this. In the case of abortion, Rawls argued, “the equality of women as equal citizens” overrides both “the ordered reproduction of political society over time” and also “the due respect for human life.” It seems fair to say that this was not the best choice of example and also that Rawls did not argue for his example particularly well: a whole subset of the Rawlsian literature concerns this question alone

Ethics, professionalism and fitness to practise: three concepts, not one

The GDC's recent third interim edition of The first five years places renewed emphasis on the place of professionalism in the undergraduate dental curriculum. This paper provides a brief analysis of the concepts of ethics, professionalism and fitness to practise, and an examination of the GDC's First five years and Standards for dental professionals guidance, as well as providing an insight into the innovative ethics strand of the BDS course at the University of Glasgow. It emerges that GDC guidance is flawed inasmuch as it advocates a virtue-based approach to ethics and professionalism, and fails to distinguish clearly between these two concepts

The impact of physical processes on algal growth

Mixing and transport processes in surface waters strongly influence the structure of aquatic ecosystems. The impact of mixing on algal growth is species-dependent, affecting the competition among species and acting as a selective factor for the composition of the biocoenose. Were it not for the ever-changing ”aquatic weather”, the composition of pelagic ecosystems would be relatively simple. Probably just a few optimally adapted algal species would survive in a given water-body. In contrast to terrestrial ecosystems, in which the spatial heterogeneity is primarily responsible for the abundance of niches, in aquatic systems (especially in the pelagic zone) the niches are provided by the temporal structure of physical processes. The latter are discussed in terms of the relative sizes of physical versus biological time-scales. The relevant time-scales of mixing and transport cover the range between seconds and years. Correspondingly, their influence on growth of algae is based on different mechanisms: rapid changes are relevant for the fast biological processes such as nutrient uptake and photosynthesis, and the slower changes are relevant for the less dynamic processes such as growth, respiration, mineralization, and settling of algal cells. Mixing time-scales are combined with a dynamic model of photosynthesis to demonstrate their influence on algal growth

An extra reason to roll the dice: balancing harm, benefit and autonomy in 'futile' cases

Oncologists frequently have to break bad news to patients. Although they are not normally the ones who tell patients that they have cancer, they are the ones who have to tell patients that treatment is not working, and they are almost always the ones who have to tell them that they are going to die and that nothing more can be done to cure them. Perhaps the most difficult cases are those where further treatment is almost certainly futile, but there remains an extremely slim chance of yet more aggressive treatment having a near-miraculous effect. In such situations, it can be difficult for the oncologist to decide how to explain things to the patient, and how much to tell them. It can also be very difficult to achieve the correct balance between respecting the patient's autonomy and not exposing them to harm. This paper examines an example of one such case and makes three suggestions. First, that respecting autonomy cannot be achieved by maximizing information sharing only to deny patients the chance to make decisions based on that information; second, that the simplistic application of the principles of non-maleficence and respect for autonomy can lead to erroneous conclusions about the most ethical course of action; and third, that there is an extra reason, in addition to respecting patients' autonomy, for attempting near-futile last-ditch interventions: when treating rare conditions, useful evidence can be generated that will benefit future patients

DNA barcoding and taxonomy: dark taxa and dark texts

Both classical taxonomy and DNA barcoding are engaged in the task of digitizing the living world. Much of the taxonomic literature remains undigitized. The rise of open access publishing this century and the freeing of older literature from the shackles of copyright have greatly increased the online availability of taxonomic descriptions, but much of the literature of the mid- to late-twentieth century remains offline (‘dark texts’). DNA barcoding is generating a wealth of computable data that in many ways are much easier to work with than classical taxonomic descriptions, but many of the sequences are not identified to species level. These ‘dark taxa’ hamper the classical method of integrating biodiversity data, using shared taxonomic names. Voucher specimens are a potential common currency of both the taxonomic literature and sequence databases, and could be used to help link names, literature and sequences. An obstacle to this approach is the lack of stable, resolvable specimen identifiers. The paper concludes with an appeal for a global ‘digital dashboard’ to assess the extent to which biodiversity data are available online. This article is part of the themed issue ‘From DNA barcodes to biomes’

EDUCATIONAL ACTIVITIES IN TENNESSEE ON WATER USE AND CONTROL - AGRICULTURAL PHASES

Resource /Energy Economics and Policy,

Developing a conceptual model for exploring emergence

Emergence is a fundamental property of complex systems and can be thought of as a new property or behaviour which appears due to non-linear interactions within the system; emergence may be considered to be the 'product' or by-product of the system. For example, within social systems, social capital, the World Wide Web, law and indeed civilization in general may be considered emergent, although all within different time scales. As our world becomes increasingly more interconnected, understanding how emergence arises and how to design for and manage specific types of emergence is ever more important. To date, the concept of emergence has been mainly used as an explanatory framework (as used by Johnson 2001), to inform the logic of action research (Mitleton-Kelly 2004) or as a means of exploring the range of emergent potential of simulation of real complex systems (Axelrod 2003). If we are to improve our ability to manage and control emergence, we need first to directly study the phenomenon of emergence, its causes and consequences across real complex systems