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Central Premise (central + premise)
Selected AbstractsTHE DUTY TO DIE AND THE BURDENSOMENESS OF LIVINGBIOETHICS, Issue 8 2010MICHAEL CHOLBI ABSTRACT This article addresses the question of whether the arguments for a duty to die given by John Hardwig, the most prominent philosophical advocate of such a duty, are sound. Hardwig believes that the duty to die is relatively widespread among those with burdensome illnesses, dependencies, or medical conditions. I argue that although there are rare circumstances in which individuals have a duty to die, the situations Hardwig describes are not among these. After reconstructing Hardwig's argument for such a duty, highlighting his central premise that ill, dependent, or aged individuals can impose unfair burdens upon others by continuing to live, I clarify precisely what Hardwig intends by his thesis that many of us have a duty to die. I then show that an important disanalogy exists between an uncontroversial example in which an individual has a duty to die and the situations in which Hardwig proposes individuals have a duty to die. More specifically, in situations where a duty to die exists, an individual's having a duty to die logically implies that those she burdens have a right to kill that individual in self-defense. I then suggest that the burdens that ill, dependent, or aged individuals impose on their families, loved ones, or caregivers do not constitute the kind of threat that warrants the latter killing the former in self-defense. Hence, the duty to die is much rarer than Hardwig supposes. [source] Petroleum hydrocarbon contamination in boreal forest soils: a mycorrhizal ecosystems perspectiveBIOLOGICAL REVIEWS, Issue 2 2007Susan J. Robertson Abstract The importance of developing multi-disciplinary approaches to solving problems relating to anthropogenic pollution is now clearly appreciated by the scientific community, and this is especially evident in boreal ecosystems exposed to escalating threats of petroleum hydrocarbon (PHC) contamination through expanded natural resource extraction activities. This review aims to synthesize information regarding the fate and behaviour of PHCs in boreal forest soils in both ecological and sustainable management contexts. From this, we hope to evaluate potential management strategies, identify gaps in knowledge and guide future research. Our central premise is that mycorrhizal systems, the ubiquitous root symbiotic fungi and associated food-web communities, occupy the structural and functional interface between decomposition and primary production in northern forest ecosystems (i.e. underpin survival and productivity of the ecosystem as a whole), and, as such, are an appropriate focal point for such a synthesis. We provide pertinent basic information about mycorrhizas, followed by insights into the ecology of ecto- and ericoid mycorrhizal systems. Next, we review the fate and behaviour of PHCs in forest soils, with an emphasis on interactions with mycorrhizal fungi and associated bacteria. Finally, we summarize implications for ecosystem management. Although we have gained tremendous insights into understanding linkages between ecosystem functions and the various aspects of mycorrhizal diversity, very little is known regarding rhizosphere communities in PHC-contaminated soils. This makes it difficult to translate ecological knowledge into environmental management strategies. Further research is required to determine which fungal symbionts are likely to survive and compete in various ecosystems, whether certain fungal - plant associations gain in ecological importance following contamination events, and how PHC contamination may interfere with processes of nutrient acquisition and exchange and metabolic processes. Research is also needed to assess whether the metabolic capacity for intrinsic decomposition exists in these ecosystems, taking into account ecological variables such as presence of other organisms (and their involvement in syntrophic biodegradation), bioavailability and toxicity of mixtures of PHCs, and physical changes to the soil environment. [source] Globalisation of consciousness and new challenges for international social workINTERNATIONAL JOURNAL OF SOCIAL WELFARE, Issue 1 2003Nader Ahmadi Although the notion of international social work is not new, it is only in recent times that its central premises have been in focus. Considering diverse ongoing globalisation processes and in regard to the weakening of the national welfare state, social work must tackle the challenge of redefining its role and mission if it is to remain true to its professional commitments. The emergence of new global regions and the globalisation of local social problems make the consolidation of democracy and human rights, the prevention of conflicts and the promotion of solidarity and peace through global cultural integration some of the main concerns of international social work. In this article, international social work is discussed as a project of partnership between diverse social actors such as practitioners, universities and local governments cooperating beyond the boundaries of the nation-state. [source] Introduction: social policy, economic growth and developmental welfareINTERNATIONAL JOURNAL OF SOCIAL WELFARE, Issue 4 2001James Midgley Although the notion of developmental welfare is not new, it is only in recent times that its central premises have again attracted attention in social policy circles. Since developmental welfare offers an opportunity to challenge the neo-liberal claim that social expenditures harm the economy, and that economic development requires retrenchments in state welfare, more information about this approach is needed. This article discusses the developmental welfare approach with reference to neo-liberalism's current hegemonic influence on social policy. It traces the historical evolution of developmental welfare, discusses its theoretical implications and outlines its practical proposals. [source] | ||||||||||