4,112 research outputs found

    Socio-spatial learning: a case study of community knowledge in participatory spatial planning

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    This monograph looks at experiences of communities with spatial planning and applies those empirics to an underexplored area of participatory theory. While issues of power and communication have been well examined this work rest on the argument that the associated production of knowledge needs to be better understood. Theories of engagement draw on issues of ‘voice’ and the means to achieving deeper democracy. Similarly, participatory planning theories frame the debate in terms of communicative processes or competing rationalities. Within that body of work, however knowledge is seen as an adjunct of power and there is little focus on the spatial particularity of knowledges. In particular there has not as yet been a thorough study of how understandings of space are produced in a spatial planning context that includes lay participants. This monograph starts to broach that gap, conceptualising a potential ‘socio-spatial learning’ where community engagement is framed as a collaborative learning arena within spatial planning. Through an English case study it unpacks the dynamics between different types of knowledge around spatial planning where there is lay participation. This draws on two years of embedded observation within a joint planning unit and a review of the North Northamptonshire Core Strategy of 2008, which culminated in substantial community engagement work early in 2011. Findings indicate that local knowledge has a distinctive spatiality and that there is a clear role for lay knowledge in the context of spatial strategy-making. It is hoped that this work can help in understanding the production of planning knowledge, help identify non-tokenist engagement of the public, and inform interactions between communities and policy makers

    Understanding Local Impacts of Wind Farm Developments Together

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    There are some well-known concerns about new developments for renewable energy generation, including Wind Farm projects. To put it simply, there is a justifiable fear of green-wash about land use changes and local impacts of projects. As set out here, this is evidenced in UCL’s research on the Nationally Significant Infrastructure Projects or ‘NSIPs’ consenting processes in the UK[1]. That study showed the importance of engaging with the complexity of evidence about the local impacts of Wind Farms, and the challenges of involving the public in decision-making for the development of new renewable energy generation stations and associated changes in land use

    Local measurements of velocity fluctuations and diffusion coefficients for a granular material flow

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    Measurements were made of two components of the average and fluctuating velocities, and of the local self-diffusion coefficients in a flow of granular material. The experiments were performed in a 1 m-high vertical channel with roughened sidewalls and with polished glass plates at the front and the back to create a two-dimensional flow. The particles used were glass spheres with a nominal diameter of 3 mm. The flows were high density and were characterized by the presence of long-duration frictional contacts between particles. The velocity measurements indicated that the flows consisted of a central uniform regime and a shear regime close to the walls. The fluctuating velocities in the transverse direction increased in magnitude from the centre towards the walls. A similar variation was not observed for the streamwise fluctuations. The self-diffusion coefficients showed a significant dependence on the fluctuating velocities and the shear rate. The velocity fluctuations were highly anistropic with the streamwise components being 2 to 2.5 times the transverse components. The self-diffusion coefficients for the streamwise direction were an order-of-magnitude higher than those for the transverse direction. The surface roughness of the particles led to a decrease in the self-diffusion coefficients

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    Structure and sequence analyses of Bacteroides proteins BVU_4064 and BF1687 reveal presence of two novel predominantly-beta domains, predicted to be involved in lipid and cell surface interactions.

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    BackgroundN-terminal domains of BVU_4064 and BF1687 proteins from Bacteroides vulgatus and Bacteroides fragilis respectively are members of the Pfam family PF12985 (DUF3869). Proteins containing a domain from this family can be found in most Bacteroides species and, in large numbers, in all human gut microbiome samples. Both BVU_4064 and BF1687 proteins have a consensus lipobox motif implying they are anchored to the membrane, but their functions are otherwise unknown. The C-terminal half of BVU_4064 is assigned to protein family PF12986 (DUF3870); the equivalent part of BF1687 was unclassified.ResultsCrystal structures of both BVU_4064 and BF1687 proteins, solved at the JCSG center, show strikingly similar three-dimensional structures. The main difference between the two is that the two domains in the BVU_4064 protein are connected by a short linker, as opposed to a longer insertion made of 4 helices placed linearly along with a strand that is added to the C-terminal domain in the BF1687 protein. The N-terminal domain in both proteins, corresponding to the PF12985 (DUF3869) domain is a β-sandwich with pre-albumin-like fold, found in many proteins belonging to the Transthyretin clan of Pfam. The structures of C-terminal domains of both proteins, corresponding to the PF12986 (DUF3870) domain in BVU_4064 protein and an unclassified domain in the BF1687 protein, show significant structural similarity to bacterial pore-forming toxins. A helix in this domain is in an analogous position to a loop connecting the second and third strands in the toxin structures, where this loop is implicated to play a role in the toxin insertion into the host cell membrane. The same helix also points to the groove between the N- and C-terminal domains that are loosely held together by hydrophobic and hydrogen bond interactions. The presence of several conserved residues in this region together with these structural determinants could make it a functionally important region in these proteins.ConclusionsStructural analysis of BVU_4064 and BF1687 points to possible roles in mediating multiple interactions on the cell-surface/extracellular matrix. In particular the N-terminal domain could be involved in adhesive interactions, the C-terminal domain and the inter-domain groove in lipid or carbohydrate interactions

    A Taskforce for Suburbia

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    In March 2020, a Suburban Taskforce was established with the goal of shedding light on the nature of 21st century British suburbs and identifying long-term strategies and policies to support suburban areas. This Taskforce was formed from a cross-party group of politicians, with University College London (UCL) as a Knowledge Partner, supported by an Advisory Board and informed by a public consultation, which ran from August to October 2020. This article draws upon the qualitative and quantitative evidence gathered during this initiative and unpacks conceptual and empirical observations linked to the character of suburbs and their relationship to urban areas

    The Galaxy Octopole Moment as a Probe of Weak Lensing Shear Fields

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    In this paper, we introduce the octopole moment of the light distribution in galaxies as a probe of the weak lensing shear field. While traditional ellipticity estimates of the local shear derived from the quadrupole moment are limited by the width of the intrinsic ellipticity distribution of background galaxies, the dispersion in the intrinsic octopole distribution is expected to be much smaller, implying that the signal from this higher order moment is ultimately limited by measurement noise, and not by intrinsic scatter. We present the computation of the octopole moment and show that current observations are at the regime where the octopole estimates will soon be able to contribute to the overall accuracy of the estimates of local shear fields. Therefore, the prospects for this estimator from future datasets like the Advanced Camera for Survey and the Next Generation Space Telescope are very promising.Comment: 9 pages, 2 PostScript figures; Submitted to Astrophysical Journa

    Allocating Students to Multidisciplinary Capstone Projects Using Discrete Optimization

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    We discuss an allocation mechanism of capstone projects to senior-year undergraduate students, which the recently established Singapore University of Technology and Design (SUTD) has implemented. A distinguishing feature of these projects is that they are multidisciplinary ; each project must involve students from at least two disciplines. This is an instance of a bipartite many-to-one matching problem with one-sided preferences and with additional lower and upper bounds on the number of students from the disciplines that must be matched to projects. This leads to challenges in applying many existing algorithms.We propose the use of discrete optimization to find an allocation that considers both efficiency and fairness. This provides flexibility in incorporating side constraints, which are often introduced in the final project allocation using inputs from the various stakeholders. Over a three-year period from 2015 to 2017, the average rank of the project allocated to the student is roughly halfway between their top two choices, with around 78 percent of the students assigned to projects in their top-three choices. We discuss practical design and optimization issues that arise in developing such an allocation
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