1,153 research outputs found

    Towards transition management of European water resources

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    Global change fundamentally changes the nature of water-related problems. We will illustrate this by showing how perceptions of the water-problems in the Netherlands have shifted in the past four decades. The nature of water-related problems changed from a technical problem’ to a so-called ‘persistent’ problem, characterized by plurality, uncertainty and complexity. Although integrated water resource management (IWRM) has been advocated to cope with this type of problem, the complexity of the transition process towards such a water management regime is often underestimated. Therefore, transition management is needed in the water sector. Transition management theory is presented and applied to the Dutch case. Transition management strategies are suggested that would reinforce this transition. Comparison between the European Water Framework Directive (WFD) and transition management indicates that the Common Implementation Strategy (CIS) in its current form is not sufficiently stimulating an innovation climate

    The transition in Dutch water management

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    Over the past decades the Dutch people have been confronted with severe waterrelated problems, which are the result of an unsustainable water system, arising from human interventions in the physical infrastructure of the water system and the water management style. The claims of housing, industry, infrastructure and agriculture have resulted in increasing pressure on the water system. The continuous subsidence of soil and climate change has put pressure on the land. Hence, the nature and magnitude of water-related problems have changed. Longitudinal research of relevant national policy documents reveals that the water management regime has changed its water management style over the past thirty years from a technocratic scientific style towards an integral and participatory style. We have investigated if the historical development in Dutch Water management can be characterized as a transition. Based on longitudinal research through an integrated systems analysis, document research and expert interviews, we have reconstructed the historical narrative by using the transition concepts of multi-level and multi-phase. This research indicates that the shift in Dutch Water management can be characterized as a transition. This transition is currently in the take-off stage and near the acceleration stage. This is a crucial stage as long as the considerable differences between the strategic macro-vision and the practical implementation at the micro-level remains. As long as these levels are not compatible (modulation), the transition will not be completed successfully. Transition management as multi-level governance model should therefore be adopted to facilitate the modulation

    Transitiemanagement en duurzame ontwikkeling: co-evolutionaire sturing in het licht van complexiteit

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    This article presents a promising governance framework for 'persistent societal problems', based on the concept of transition management. This framework is based on the common notions from complexity theory and new forms of governance, that are folded into a new management paradigm. This management paradigm starts from complexity and uncertainty as drivers of societal innovation, not as obstacles that have to be fully controlled. Essential feature of transition management is the explicit coupling of content and process. The analysis (based on the presented analytical concepts) determines the transition management process: the management possibilities and instruments that are employed with regard to the presented management framework. The framework entails goals, activities, instruments and competences for the strategic, tactical and operational level. Which activities and actors are being involved depends on the phase of the transition

    Intrasellar rupture of a paraclinoid aneurysm with subarachnoid hemorrhage: usefulness of MR imaging in diagnosis

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    Characterization of paraclinoid aneurysms may be difficult because of the complexity of anatomic structures involved, and differentiation between intradural and extradural lesions is crucial. We report a case of a patient with a unique presentation of a paraclinoid aneurysm with intrasellar hemorrhage in which the presence of intrasellar blood and the relationship of the paraclinoid aneurysmal neck and sac to the dural rings were elegantly demonstrated on MR imaging and were critical in choosing the target lesion for treatment

    Захисні лісові насадження – важливий структурний елемент у формуванні національної екологічної мережі

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    Описано роль і значення захисних лісових насаджень як важливого структурного елементу при формуванні національної екологічної мережі.Описана роль и значение защитных лесных насаждений как важного структурного элемента при формировании национальной экологической сети.Role and meaning of forest protective stands as an important structural element for national ecological network formation is described

    Transition dynamics in social-ecological systems: The case of Dutch water management

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    The main objective of this dissertation is to generate more insight into the dynamics of sustainability transitions, more specifically it deals with the question of which kind of social structures are changing during a transition and how these transformative changes come about. Using insights from resilience theory and social theories, this research indicates that in order to understand and explain transitions we should shift our attention towards the regime concept. The regime is often treated as a black box, not explicitly clarifying which elements constitute the regime nor addressing the internal dynamics. The regime conceptualization suggested in this dissertation is a first step into this direction. A new transition analysis approach is developed which enables researchers to analyze which regime structures are changing during a transition and how these changes come about (i.e. the underlying transformation patterns). The research presents an in-depth analysis of the dynamics of the transition of Dutch water management, starting around the 1970s and is still unfolding towards a new regime adapting to and anticipating climate change. Our analysis suggests that niches and the regimes may be more cooperative than suggested in the literature and that even the regime is actively involved in creating niches. The regime creates niches through the formation of new structures. The niche initiates transformation leading to new regime structures, which in turn trigger niches. Scientifically, this dissertation triggers intriguing questions as to when societal change may be classified as transition. Practically, it provides leverages for systems analysis and transition management

    A Systematic Review and Meta-Analysis of Interventions Used to Reduce Exposure to House Dust and Their Effect on the Development and Severity of Asthma

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    We assessed whether any household dust reduction intervention has the effect of increasing or decreasing the development or severity of atopic disease. Electronic searches on household intervention and atopic disease were conducted in 2007 in EMBASE, MEDLINE, and the Cochrane Central Register of Controlled Trials. We included randomized controlled trials comparing asthma outcomes in a household intervention group with either placebo intervention or no intervention. Meta-analyses on the prevention studies found that the interventions made no difference to the onset of wheeze but made a significant reduction in physician-diagnosed asthma. Meta-analysis of lung function outcomes indicated no improvement due to the interventions but found a reduction in symptom days. Qualitatively, health care was used less in those receiving interventions. However, in one study that compared intervention, placebo, and control arms, the reduction in heath care use was similar in the placebo and intervention arms. This review suggests that there is not sufficient evidence to suggest implementing hygiene measures in an attempt to improve outcomes in existing atopic disease, but interventions from birth in those at high risk of atopy are useful in preventing diagnosed asthma but not parental-reported wheeze

    Immunocytochemical localization of the neuron-specific form of the c-src gene product, pp60c-src(+), in rat brain

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    Neurons express high levels of a variant form of the c-src gene product, denoted pp60c-src(+), which contains a 6 amino acid insert in the amino-terminal half of the c-src protein. We have determined the localization of pp60c-src(+) in neurons using an affinity-purified anti-peptide antibody, referred to as affi-SB12, that exclusively recognizes this neuron-specific form of the c-src gene product. Using affi-SB12, we examined the distribution of pp60c-src(+) by immunoperoxidase staining of sections through adult rat brains, pp60c-src(+) was widely distributed in rat brain and appeared to be differentially expressed in subpopulations of neurons. The majority of immunoreactive neurons was found in the mesencephalon, cerebellum, pons, and medulla. Telencephalic structures that contained substantial populations of pp60c-src(+)-immunoreactive neurons included layer V of the cerebral cortex and the ventral pallidum. Within individual neurons, pp60c-src(+) immunoreactivity was localized to the cell soma and dendritic processes, while labeling of axons and nerve terminals (puncta) was not as readily detected. Dense accumulations of immunoreactive axons were rare, being most prominent in portions of the inferior and superior olive, and in the spinal trigeminal nucleus. While the regional distribution of pp60c-src(+) immunoreactivity does not correlate with any specific neuronal cell type or first messenger system, this unique pattern of expression of pp60c-src(+) suggests the existence of a previously uncharacterized functional organization within the brain. Furthermore, the localization of this neuron-specific tyrosine kinase in functionally important areas of the nerve cell, namely, dendritic processes, axons, and nerve terminals, suggests that pp60c-src(+) may regulate pleiotropic functions in specific classes of neurons in the adult central nervous system
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