1,152 research outputs found
Towards transition management of European water resources
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
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
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
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
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
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
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
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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A global atmospheric electricity monitoring network for climate and geophysical research
The Global atmospheric Electric Circuit (GEC) is a fundamental coupling network of the climate system connecting electrically disturbed weather regions with fair weather regions across the planet. The GEC sustains the fair weather electric field (or potential gradient, PG) which is present globally and can be measured routinely at the surface using durable instrumentation such as modern electric field mills, which are now widely deployed internationally. In contrast to lightning or magnetic fields, fair weather PG cannot be measured remotely. Despite the existence of many PG datasets (both contemporary and historical), few attempts have been made to coordinate and integrate these fragmented surface measurements within a global framework. Such a synthesis is important elvinin order to fully study major influences on the GEC such as climate variations and space weather effects, as well as more local atmospheric electrical processes such as cloud electrification, lightning initiation, and dust and aerosol charging.
The GloCAEM (Global Coordination of Atmospheric Electricity Measurements) project has brought together experts in atmospheric electricity to make the first steps towards an effective global network for atmospheric electricity monitoring, which will provide data in near real time. Data from all sites are available in identically-formatted files, at both one second and one minute temporal resolution, along with meteorological data (wherever available) for ease of interpretation of electrical measurements. This work describes the details of the GloCAEM database and presents what is likely to be the largest single analysis of PG data performed from multiple datasets at geographically distinct locations. Analysis of the diurnal variation in PG from all 17 GloCAEM sites demonstrates that the majority of sites show two daily maxima, characteristic of local influences on the PG, such as the sunrise effect. Data analysis methods to minimise such effects are presented and recommendations provided on the most suitable GloCAEM sites for the study of various scientific phenomena. The use of the dataset for a further understanding of the GEC is also demonstrated, in particular for more detailed characterization of day-to-day global circuit variability. Such coordinated effort enables deeper insight into PG phenomenology which goes beyond single-location PG measurements, providing a simple measurement of global thunderstorm variability on a day-to-day timescale. The creation of the GloCAEM database is likely to enable much more effective study of atmospheric electricity variables than has ever been possible before, which will improve our understanding of the role of atmospheric electricity in the complex processes underlying weather and climate
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Sunspot observations on 10 and 11 February 1917: a case study in collating known and previously undocumented records
An extensive investigation of ships’ logs, as part of the ‘Old Weather’ citizen-science project,
identified a sunspot observation made from HMS Hilary on 10 February 1917. This sunspot record was accompanied by detailed meteorological records that have enabled a reconstruction of the conditions under which the observation was made (overcast with detached clouds). Although there is no incontrovertible evidence that this was an unaided-eye observation, comparison with an unaided-eye observation recorded on the 11 February 1917 in a local
treatise from Hénán province in China confirms that this sunspot group was visible to the unaided eye. White-light photographs from the Dehra Dun Observatory confirm the detailed description of the sunspot group provided by the naval observer. Moreover, comparisons with tabular data published by the Royal Observatory, Greenwich, confirm the statement that this was an unusually large sunspot group. Indeed, on 11 February 1917 the area of the sunspot group was greater than the area of any sunspot group recorded previously at the Royal Observatory, Greenwich. A comparison with a modern unaided-eye observation confirms that it is possible to observe sunspots under meteorological conditions similar to those experienced on-board HMS Hilary
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