212 research outputs found
How does the professionalisation of farmer collectives enable effective agri-environmental schemes? A fuzzy-set qualitative comparative analysis of 36 Dutch farmer collectives
Agriculture is the main land use and one of the main drivers of biodiversity loss. In particular, intensive farming practices have contributed to biodiversity loss, which is why many governments have implemented agri-environmental schemes (AES). Farmer collaboration at landscape level is important to achieve effective AES. The Dutch government opted for such an approach and decided that only farmer collectives were entitled to take part in AES. In this paper, we evaluate 36 Dutch farmer collectives. Through the lens of professionalisation, we investigated which characteristics of professionalisation enable farmer collectives to work towards an effective AES in terms of collaboration at landscape level. We used spatial concentration of conservation measures as a measurement of an effective AES and, based on expert judgement, selected five characteristics of professionalisation that directly impact AES effectiveness. We applied a fuzzy-set Qualitative Comparative Analysis (fsQCA) in order to explore which of these characteristics singly or in combination contribute most to spatial concentration. We found that different combinations of characteristics of professionalisation enable farmer collectives to work towards spatial concentration. First, we found that working on the maintenance and development of qualifications of participants is for most farmer collectives important to work on more spatial concentration. Second, the combination of having a strategy for agrobiodiversity in combination with working on the qualifications of the field workers is important. And when the network capability or the presence and use of enabling systems are missing, the qualifications of the field workers is important. Based on our findings, we conclude that the qualifications of participants and fieldworkers (i.e., regional coordinator, ecologist and field officer) are the most important characteristics of professionalisation to contribute to spatial concentration at the moment
Toll-like receptor and IL-12 signaling control susceptibility to contact hypersensitivity.
Allergic contact hypersensitivity (CHS) is a T cell-mediated inflammatory skin disease. Interleukin (IL)-12 is considered to be important in the generation of the allergen-specific T cell response. Loss of IL-12 function in IL-12Rbeta2-deficient mice, however, did not ameliorate the allergic immune response, suggesting alternate IL-12-independent pathways in the induction of CHS. Because exposure to contact allergens always takes place in the presence of microbial skin flora, we investigated the potential role of Toll-like receptors (TLRs) in the induction of CHS. Using mice deficient in TLR4, the receptor for bacterial lipopolysaccharide (LPS), IL-12 receptor (R) beta2, or both, we show that the concomitant absence of TLR4 and IL-12Rbeta2, but not the absence of TLR4 or IL-12Rbeta2 alone, prevented DC-mediated sensitization, generation of effector T cells, and the subsequent CHS response to 2,4,6-trinitro-1-chlorobenzene (TNCB), oxazolone, and fluorescein isothiocyanate. Introduction of the TLR4 transgene into the TLR4/IL-12Rbeta2 mutant restored the CHS inducibility, showing a requirement for TLR4 in IL-12-independent CHS induction. Furthermore, the concomitant absence of TLR2 and TLR4 prevented the induction of CHS to TNCB in IL-12-competent mice. Finally, CHS was inducible in germ-free wild-type and IL-12Rbeta2-deficient mice, but not in germ-free TLR4/IL-12Rbeta2 double deficient mice, suggesting that the necessary TLR activation may proceed via endogenous ligands
Innate and adaptive autoimmunity in type 1 diabetes
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/74867/1/j.1399-5448.2007.00334.x.pd
There is No Single Challenge, Nor Single Solution, for Food Systems Transformations: Making plurality visible
There is a growing call (and agreement) to transform food systems towards sustainable, just and healthy systems, understanding that transformation is about fundamental, system- wide changes, beyond piecemeal interventions (see Box 1 for the new FACCE-JPI approach to food systems). But, what does transformation look like? Is there a consensus about what we want to transform in food systems, who will do it and how? The objective of this policy brief is to call for fairer, more inclusive and eventually, more effective decisions on food systems transformations. For doing so, it focuses on decision-making under uncertainty, highlighting complexity and framings as two components of this: On one hand complexity requires us to avoid oversimplification of messages (see the livestock section) and on the other, framing calls for the integration of a plurality of values and worldviews (see the governance section). Thus, in the context of the UNFSS objective of transforming food systems, this brief aims to raise awareness of decision makers about the need of developing and using knowledge and tools that i) tackle the complexity of food systems as complex social-ecological systems, and ii) recognise the existence of different framing and values in a context of uncertainty. We also reflect on the role of science in this process. While our focus is global, we focus on Europe to exemplify our arguments. Yet, transformation cannot happen in one world region independently from the others. A global movement requires first adopters to start the process.Peer reviewe
Mission-oriented public policy and the new evaluation culture
In this chapter, our aim is to develop a framework to improve public policy-related evaluation practice for a more adaptive and anticipatory evaluation approach, better in tune with complex interactions and interdependencies that have emerged on our policy agenda today. One of the features of this space for interactions that is public policy is its mission orientation. Such an orientation is accompanied by the evolution of public policy instruments, which in turn necessitate new evaluation approaches. We are convinced that this requires developing a conceptual framework, which can be taken forward to test and further operationalise in situations where similar systemic transformations for policy development are elaborated upon. Based on our work on public-sector leadership, we are proposing a framework for evaluation in a more mission-driven and systems-based perspective. The framework seeks to take better into consideration the diversity of policy interventions at our disposal, ranging from traditional budgetary or legislative instruments to experimentation and piloting. Changes are identified in the very characteristics of the societal problems we are trying to solve, as well as in the nature of policy, both subsequently requiring a more multifaceted scope of evaluation, an emerging practice being towards a more mission-oriented one as well as a more nuanced approach depending on whether one is interested in the multi-organisational performance, policy service delivery or quality of outputs and impacts from policy initiatives and projects. The focus of evaluation in turn ranges from the accountability to evaluation criteria, timescale, motivation, as well as type of intervention used.fi=vertaisarvioitu|en=peerReviewed
Water Managers' Boundary Judgments and Adaptive Water Governance. An Analysis of the Dutch Haringvliet Sluices Case
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In this paper, we explore how managing actors' boundary judgments influence the adaptability of water governance. We approach this question by examining the relationship between the way water managers frame, and act in, complex water issues on the one hand and develop adaptive water governance strategies on the other. We define four categories of boundary judgments made by water managers in order to deal with the complexities in water governance issues. An in-depth case study analysis of an attempt to adjust the management of the water regime in the south-west Delta of the Netherlands is provided in order to reconstruct the water managers' boundary judgments and their impact upon governance strategies used. We found that, most of the time, the water managers involved predominantly made tight boundary judgments. These tight boundary judgments seemed to hamper the mutual learning process among a variety of stakeholders that is needed to realize adaptive water governance. We argue that wide boundary judgments enhance the chance of realizing adaptive practices and build upon exploration, learning, and connection
Blockade of Toll-like receptor 2 prevents spontaneous cytokine release from rheumatoid arthritis ex vivo synovial explant cultures
Politicizing food security governance through participation: opportunities and opposition
Since the 2007/08 food price crisis there has been a proliferation of multi-stakeholder processes (MSPs) devoted to bringing diverse perspectives together to inform and improve food security policy. While much of the literature highlights the positive contributions to be gained from an opening-up of traditionally state-led processes, there is a strong critique emerging to show that, in many instances, MSPs have de-politicizing effects. In this paper, we scrutinize MSPs in relation to de-politicization. We argue that re-building sustainable and just food systems requires alternative visions that can best be made visible through politicized policy processes. Focusing on three key conditions of politicization, we examine the UN Committee on World Food Security as a MSP where we see a process of politicization playing out through the endorsement of the ‘most-affected’ principle, which is in turn being actively contested by traditionally powerful actors. We conclude that there is a need to implement and reinforce mechanisms that deliberately politicize participation in MSPs, notably by clearly distinguishing between states and other stakeholders, as well as between categories of non-state actors.</p
High and Low Molecular Weight Hyaluronic Acid Differentially Regulate Human Fibrocyte Differentiation
Following tissue injury, monocytes can enter the tissue and differentiate into fibroblast-like cells called fibrocytes, but little is known about what regulates this differentiation. Extracellular matrix contains high molecular weight hyaluronic acid (HMWHA; ∼2×10(6) Da). During injury, HMWHA breaks down to low molecular weight hyaluronic acid (LMWHA; ∼0.8-8×10(5) Da).In this report, we show that HMWHA potentiates the differentiation of human monocytes into fibrocytes, while LMWHA inhibits fibrocyte differentiation. Digestion of HMWHA with hyaluronidase produces small hyaluronic acid fragments, and these fragments inhibit fibrocyte differentiation. Monocytes internalize HMWHA and LMWHA equally well, suggesting that the opposing effects on fibrocyte differentiation are not due to differential internalization of HMWHA or LMWHA. Adding HMWHA to PBMC does not appear to affect the levels of the hyaluronic acid receptor CD44, whereas adding LMWHA decreases CD44 levels. The addition of anti-CD44 antibodies potentiates fibrocyte differentiation, suggesting that CD44 mediates at least some of the effect of hyaluronic acid on fibrocyte differentiation. The fibrocyte differentiation-inhibiting factor serum amyloid P (SAP) inhibits HMWHA-induced fibrocyte differentiation and potentiates LMWHA-induced inhibition. Conversely, LMWHA inhibits the ability of HMWHA, interleukin-4 (IL-4), or interleukin-13 (IL-13) to promote fibrocyte differentiation.We hypothesize that hyaluronic acid signals at least in part through CD44 to regulate fibrocyte differentiation, with a dominance hierarchy of SAP>LMWHA≥HMWHA>IL-4 or IL-13
Transformation, adaptation and development: relating concepts to practice
In recent years there has been a growing number of academic reviews discussing the theme of transformation and its association with adaptation to climate change. On the one hand this has stimulated exchange of ideas and perspectives on the parameters of transformation, but it has also given rise to confusion in terms of identifying what constitutes a non-incremental form of adaptation on the ground. What this article aims to do instead is help researchers and practitioners relate different interpretations of transformation to practice by proposing a typological framework for categorising forms of change that focuses on mechanisms and objectives. It then discusses how these categorisations link to the broader conceptions and critiques noted above, with the idea that this will enable those who seek to analyse or plan adaptation to better analyse what types of action are potentially constitutive of transformation. In doing so, it should equally assist in the identification and specification of critical questions that need to be asked of such activity in relation to issues of sustainability and equity. As the term transformation gains ground in discussions of climate change adaptation, it is necessary to take a step back, review quite what commentators mean when they use the word, and consider the implications on people, especially the most vulnerable and marginalised, of “doing” or promoting transformation in its different forms
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