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Radical Shift (radical + shift)
Selected AbstractsTHE AFRICANIZATION OF HONEYBEES (APIS MELLIFERA L.) OF THE YUCATAN: A STUDY OF A MASSIVE HYBRIDIZATION EVENT ACROSS TIMEEVOLUTION, Issue 7 2002Kylea E. Clarke Abstract Until recently, African and European subspecies of the honeybee (Apis mellifera L.) had been geographically separated for around 10,000 years. However, human-assisted introductions have caused the mixing of large populations of African and European subspecies in South and Central America, permitting an unprecedented opportunity to study a large-scale hybridization event using molecular analyses. We obtained reference populations from Europe, Africa, and South America and used these to provide baseline information for a microsatellite and mitochondrial analysis of the process of Africanization of the bees of the Yucatan Peninsula, Mexico. The genetic structure of the Yucatecan population has changed dramatically over time. The pre-Africanized Yucatecan population (1985) comprised bees that were most similar to samples from southeastern Europe and northern and western Europe. Three years after the arrival of Africanized bees (1989), substantial paternal gene flow had occurred from feral Africanized drones into the resident European population, but maternal gene flow from the invading Africanized population into the local population was negligible. However by 1998, there was a radical shift with both African nuclear alleles (65%) and African-derived mitochondria (61%) dominating the genomes of domestic colonies. We suggest that although European mitochondria may eventually be driven to extinction in the feral population, stable introgression of European nuclear alleles has occurred. [source] MEMORY, AMNESIA AND IDENTITY IN HERMANN BROCH'S SCHLAFWANDLER TRILOGYGERMAN LIFE AND LETTERS, Issue 2 2008Graham Bartram ABSTRACT Through its three novels, set in 1888, 1903 and 1918, Broch's Schlafwandler trilogy traces a progressive fragmentation of social values in late modernity. This article investigates a key marker of this fragmentation: the figuration of individual and collective memory, which undergoes a radical shift between Part I and Part III. In Part I the depiction of memory engages the reader with the protagonist's psychological and moral conflicts and the formation of his individual identity. In Part II memory features as abstract and collective, in allegorical meditations on man's existence in time; in Part III the theme of remembering is largely displaced by that of amnesia, emphasising the isolation of the individual in the era of ,Wertzerfall'. This depiction of cultural disintegration is, however, counterbalanced by the symbolic unity of Die Schlafwandler, whose aesthetic structures play an essential part in what Broch saw as the novel's ,cognitive' task. Here memory features within the reading process itself. To conclude we examine some of the trilogy's densely intersecting leitmotifs that activate the reader's memory in defiance of disintegration and amnesia, and thereby contribute a vital element to the realisation of the ,cognitive novel'. [source] COLLINGWOOD, BRADLEY, AND HISTORICAL KNOWLEDGEHISTORY AND THEORY, Issue 2 2006ROBERT M. BURNS ABSTRACT The central feature of the narrative structure of Collingwood's The Idea of History (IH) is the pivotal role accorded to Bradley, evident in the table of contents and in the two discussions of him. Few readers have noticed that, confusingly, the book's first discussion of Bradley (on pages 134-141) is a revision of the (1935) Inaugural Lecture "The Historical Imagination," which constitutes the book's second discussion of Bradley (on pages 231-249). The differences between these two presentations of Bradley are significant. The 1935 account (presented in IH on pages 231-249) seeks to portray the Bradley of the Presuppositions of Critical History as a Copernican revolutionary in historical thought, even though the neo-Kantian transcendentalism promoted in the Lecture had been the core of Collingwood's approach to philosophy of history from the mid-1920s, many years before he encountered Bradley's essay. By 1935 this transcendentalism was in the process of self-destructing because of inner contradictions. By 1936, once Collingwood's narrative and his criticisms of Bradley left the 1935 claims unsustainable, Collingwood shifted attention to Bradley's later works, in an unsuccessful attempt to sustain the notion of his originality (presented in IH on pages 134-141). Hitherto neglected Collingwood manuscripts held in the Bodleian prove that by 1940 Collingwood recognized this, so that the prominence Knox gave to Bradley in his editing of the IH is demonstrably not in accord with Collingwood's views and plans for The Idea of History. Knox's much-disputed claim that there was a radical shift to historicism in the later Collingwood is, however, confirmed, clear proof being adduced that in the later 1930s the attempt transcendentally to deduce universal and necessary presuppositions of historical knowledge is abandoned for a radically historicist account, paralleled by a demotion of "critical history" as the final form of "history proper" in favor of "scientific history." [source] Time for a shift in crop production: embracing complexity through diversity at all levelsJOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, Issue 9 2009Hanne Østergård A radical shift in our approach to crop production is needed to ensure food security and to address the problems of soil degradation, loss of biodiversity, polluted and restricted water supplies, coupled with a future of fossil fuel limitations and increasingly variable climatic conditions. An interdisciplinary network of European scientists put forward visions for future crop production embracing the complexity of our socio-ecological system by applying the principle of diversity at all levels from soil micro-organisms to plant varieties and cropping systems. This approach, integrated with careful deployment of our finite global resources and implementation of appropriate sustainable technology, appears to be the only way to ensure the scale of system resilience needed to cope with many of our concerns. We discuss some of the most important tools such as (i) building soil fertility by recycling of nutrients and sustainable use of other natural and physical resources, (ii) enhancing biological diversity by breeding of crops resilient to climate change and (iii) reconnecting all stakeholders in crop production. Finally, we emphasise some of the changes in agricultural and environmental regulation and policy needed in order to implement the visions. Copyright © 2009 Society of Chemical Industry [source] Chimpanzee Theory of Mind: Looking in All the Wrong Places?MIND & LANGUAGE, Issue 5 2005Kristin Andrews I argue that Povinelli and Vonk's proposed experiment is subject to their own criticisms and that there should be a more radical shift away from experiments that ask subjects to predict behavior. Further, I argue that Povinelli and Vonk's theoretical commitments should lead them to accept this new approach, and that experiments which offer subjects the opportunity to look for explanations for anomalous behavior should be explored. [source] Paranoid investments in nursing: a schizoanalysis of the evidence-based discourseNURSING PHILOSOPHY, Issue 2 2007Dave Holmes rn phd Abstract, There are those who would argue that, recently, the profession of nursing has made a radical shift, while others believe that a schism has been created among both scholars and clinicians as a result of the emerging dominance of the evidence-based nursing movement. This paper offers a philosophical critique of this movement using Gilles Deleuze and Felix Guattari's concept of schizoanalysis. As a conclusion, the authors posit that nursing professionals maintain a stance of academic freedom of thought and scientific integrity through the acceptance of multiplicity, diversity, and polyvocality, and by challenging with politically charged concepts the totalizing perspectives that often spread through the profession/discipline of nursing. [source] Learning, governance and economic policy1BRITISH JOURNAL OF POLITICS & INTERNATIONAL RELATIONS, Issue 4 2003Hugh Pemberton This article examines the relationship between economic policy networks and policy learning during the 1960s, using recently released files to flesh out the operation of both networks and learning. It finds that policy failure in the 1950s brought into being a new policy network which was able to secure a radical shift in the economic policy of the core executive in the early 1960s. However, it then proved impossible to craft, implement and sustain a coherent and enduring set of new policies within the new policy framework due to the ability of competing networks to resist central control. This leads to three conclusions. First, peripheral actors may obtain influence over policy-making in the core executive by means of a policy network. Second, policy learning does not necessarily generate policy change of a similar order because, whilst networks may facilitate learning, competing networks may block the translation of this learning into effective policies. Third, ,governance' is not solely a phenomenon of the years since 1979: in the 1960s the British core executive was already operating within a polity characterised by fragmentation, inter-dependency and self-organising policy networks. [source] Depression in Long-Term Care: Contrasting a Disease Model with Attention to Environmental ImpactCLINICAL PSYCHOLOGY: SCIENCE AND PRACTICE, Issue 3 2005Antonette M. Zeiss The preceding review of depression in long-term care (LTC settings recognizes the prevalence of depression in LTC, addresses problems in assessment of depression, and examines empirical literature on the effectiveness of psychotherapy for depression. This commentary expands on the preceding review by focusing on a theoretical understanding of depression and how that understanding can inform treatment recommendations. The basic argument presented is that psychologists could best serve older adults in LTC settings by extending beyond traditional approaches to treatment of individuals who are depressed; psychologists can become good observers of the relationship of environmental factors in LTC to the internal emotional experience of depression, and then help to serve as change agents by collaborating in designing and implementing change in LTC environments. Such a radical shift could improve the quality of life for LTC residents. It also offers the possibility of defining theoretical linkages among external environmental variables, cognitive understanding of them, and emotional experience that could inform depression theory generally. [source] | ||||||||||