A constraint and position identification (CPI) approach for the synthesis of decoupled spatial translational compliant parallel manipulators

This paper introduces a screw theory based method termed constraint and position identification (CPI) approach to synthesize decoupled spatial translational compliant parallel manipulators (XYZ CPMs) with consideration of actuation isolation. The proposed approach is based on a systematic arrangement of rigid stages and compliant modules in a three-legged XYZ CPM system using the constraint spaces and the position spaces of the compliant modules. The constraint spaces and the position spaces are firstly derived based on the screw theory instead of using the rigid-body mechanism design experience. Additionally, the constraint spaces are classified into different constraint combinations, with typical position spaces depicted via geometric entities. Furthermore, the systematic synthesis process based on the constraint combinations and the geometric entities is demonstrated via several examples. Finally, several novel decoupled XYZ CPMs with monolithic configurations are created and verified by finite elements analysis. The present CPI approach enables experts and beginners to synthesize a variety of decoupled XYZ CPMs with consideration of actuation isolation by selecting an appropriate constraint and an optimal position for each of the compliant modules according to a specific application.

The geographies of encounter: investigating the spatiality and construction of 'meaningful' encounters with difference through the experiences of international students at University College Cork, Ireland

The purpose of this research is to investigate how international students negotiate encounters with Irish students and construct ‘meaning’ from those encounters in the spaces of the university and city. As cities are increasingly characterised by a multiplexity of diversity, the issue of living with difference is becoming more and more pertinent. In the wake of escalating socio-spatial polarisation, inter-cultural tension, racism, and xenophobia, the geographies of encounter seek to untangle the interactions that occur in the quotidian activities and spaces of everyday life to determine whether such encounters might reduce prejudice, antipathy and indifference and establish common social bonds (Amin 2002; Valentine 2008). Thus far, the literature has investigated a number of sites of encounter; public space, the home, neighbourhoods, schools, sports clubs, public transport, cafes and libraries (Wilson 2011; Schuermans 2013; Hemming 2011; Neal and Vincent 2011; Mayblin, Valentine and Anderrson 2015; Laurier and Philo 2006; Valentine and Sadgrove 2013; Harris, Valentine and Piekut 2014; Fincher and Iveson 2008). While these spaces produce a range of outcomes, the literature remains frustrated by a lack of clarity of what constitutes a ‘meaningful’ encounter and how such encounters might be planned for. Drawing on survey and interview data with full-time international students at University College Cork, Ireland, this study contributes to understanding how encounters are shaped by the construction and reproduction of particular identities in particular spaces, imbuing spaces with uneven power frameworks that produce diverse outcomes. Rather than identifying a singular ‘meaningful’ outcome of encounter as a potential panacea to the issues of exclusion and oppression, the contention here is to recognise a range of outcomes that are created by individuals in a range of ways. To define one outcome of encounter as ‘meaningful’ is to overlook the scale of intensity of diverse interactions and the multiplicity of ways in which people learn to live with difference.

"On our way": identities and representations of African women seeking asylum in Ireland

This thesis provides the first explicit Postcolonial study of asylum in the Irish context that integrates Black Feminist analyses of intersectional identity with Postcolonial Feminist theories of representation. African women seeking asylum in the Republic of Ireland were key political instruments used by the state to re-draw racial lines. The study examines how, for a group of African women “On their Way” through asylum, identity and representation work hand in hand to force identities, subaltern spaces and bodies to occupy them. Rich biographical data is gathered through mixed art and drama methods over two intensive participatory research projects conducted in a small Irish city. Data analysis critically examines the poetics (practices that signify) and politics (the powers that govern these practices) and affective economies of global and local NGO visual representations, exposing how they consume, fragment, and appropriate African women’s identities and bodies. Though hypervisible, the women themselves “cannot speak”. The women in the study reported feeling “tired” and “used”. Asking “What work are they doing as they do asylum?” the study finds that black female identities and bodies are forced to perform political, cultural, emotional and material labour on their way through this context of Irish asylum. The author argues that Postcolonial Asylum is a performative encounter that re-scripts colonial race/class/gender discourse through a humanitarian alibi to naturalize European/white supremacy, reinscribe patriarchal power and justify racialised incarceration of bodies seeking asylum in the North. This study takes an interdisciplinary approach that centralizes Black and Postcolonial Feminist theory and innovates Participatory Art-Based Action methodology. Black and Postcolonial feminisms can recognize, theorize and replenish black female political and intellectual agency. Participatory Action research, if grounded in Black feminist epistemology and ethics, can allow participants to “speak back” to what is already said about them in spaces of convivial self-representation.

Spatial Articulations of Race, Desire, and Belonging in Western North Carolina

The sociocultural mythology of the South homogenizes it as a site of abjection. To counter the regionalist discourse, the dissertation intersects queer sexualities with gender and race and focuses on exploring identity and spatial formation among Black lesbian and queer women. The dissertation seeks to challenge the monolith of the South and place the region into multiple contexts and to map Black geographies through an intentional intersectional account of Black queer women. The dissertation utilizes qualitative research methods to ascertain understandings of lived experiences in the production of space. The dissertation argues that an idea of Progress has been indoctrinated as a synonym for the lgbtq civil rights movement and subsequently provides an analysis of progress discourses and queer sexualities and political campaigns of equality in the South. Analyses revealed different ways to situate progress utilizing the public contributions of three Black women interviewed for the dissertation. Moreover, the dissertation utilizes six Black queer and lesbian women to explain the multifarious nature of identities and their construction in place. Black queer and lesbian women produce spaces that deconstruct the normativity of stasis and physicality, and the dissertation explores the consequential realities of being a body in space. These consequences are particularly highlighted in the dissertation by discussions of the processes of racialization in the bounded and unbounded senses of space and place and the impacts of religious institutions, specifically Christianity. The dissertation concluded that no space is without complication. Other considerations should be made in the advancement of alleviating oppression deeply embedded in United States landscapes. Black women’s geographies offer epistemological and ontological renderings that enrich analyses of space, place, and landscape. The dissertation also concludes that Black women’s bodies represent sites for the production of geographic knowledge through narrating their spaces of material trajectories of interlocking, multiscalar lives.

Near real time surface ocean velocity in the Bay of Biscay - Basque Country from Mai to September 2016

The data set consists of maps of total velocity of the surface current in the Southeastern Bay of Biscay averaged over a time interval of 1 hour around the cardinal hour. Surface ocean velocities estimated by this HF Radar(4.65 MHz) are representative of the upper 2-3 meters of the ocean. The main objective of near real time processing is to produce the best product from available data at the time of processing. Total velocities are derived using least square fit that maps radial velocities measured from individual sites onto a cartesian grid. The final product is a map of the horizontal components of the ocean currents on a regular grid in the area of overlap of two or more radar stations.

Cultural Politics of Resilience in Kingston, Jamaica

Recently, resilience has become a catchall solution for some of the world’s most pressing ecological, economic and social problems. This dissertation analyzes the cultural politics of resilience in Kingston, Jamaica by examining them through their purported universal principles of adaptation and flexibility. On the one hand, mainstream development regimes conceptualize resilience as a necessary and positive attribute of economies, societies and cultures if we are to survive any number of disasters or disturbances. Therefore, in Jamaican cultural and development policy resilience is championed as both a means and an end of development. On the other hand, critics of resilience see the new rollout of resilience projects as deepening neoliberalism, capitalism and new forms of governmentality because resilience projects provide the terrain for new forms of securitization and surveillance practices. These scholars argue that resilience often forecloses the possibilities to resist that which threatens us. However, rather than dismissing resilience as solely a sign of domination and governmentality, this dissertation argues that resilience must be understood as much more ambiguous and complex, rather than within binaries such as subversion vs. neoliberal and resistance vs. resilience. Overly simplistic dualities of this nature have been the dominant approach in the scholarship thus far. This dissertation provides a close analysis of resilience in both multilateral and Jamaican government policy documents, while exploring the historical and contemporary production of resilience in the lives of marginalized populations. Through three sites within Kingston, Jamaica—namely dancehall and street dances, WMW-Jamaica and the activist platform SO((U))L HQ—this dissertation demonstrates that “resilience” is best understood as an ambiguous site of power negotiations, social reproduction and survival in Jamaica today. It is often precisely this ambiguous power of ordinary resilience that is capitalized on and exploited to the detriment of vulnerable groups. At once demonstrating creative negotiation and reproduction of colonial capitalist social relations within the realms of NGO, activist work and cultural production, this dissertation demonstrates the complexity of resilience. Ultimately, this dissertation draws attention to the importance of studying spaces of cultural production in order to understand the power and limits of contemporary policy discourses and political economy. 

Sites of Excavation and Construction

For his first solo show in Belgium, British artist Neal White presents a range of recent and new work – some of them in collaboration with artist Tina O’Connell – that reflect his ongoing preoccupations with deep time and the spaces of art. OBJECTIF EXHIBITIONS is a not-for-profit institution devoted to the presentation of contemporary art, supported by the Flemish Community. Curated by Antony Hudek

Green Economy and Employment: employment potential of the ecological transition in Spain

The Green Economy offers real possibilities for productive innovation, economic growth and employment creation in Spain. These three factors are critical to facilitate the necessary change in the productive model to overcome the crisis. However, the measures taken by the current Conservative government have moved in the opposite direction: significant cutting in incentives for renewable, increasing tax burden on renewable energy production to self-consumption and privatizing public spaces of social and environmental interest. This hinders the achievement of the environmental objectives of the Europe 2020 strategy. A strategy that is born already in itself highly limited, unambitious and subordinated to the interests of energy oligopolies and the imperatives of the Stability and Growth Pact (Maastricht) and the Austerity policies imposed from EU institutions to overcome the 2008 financial crisis. So the Ecological Transition goes further, claiming a substantially change in Economic Policy away form the increasing commodification proposed by the Green Economy. Despite these limitations, young and unemployed people have much to gain from a comprehensive development of environmental industries. Therefore, innovative-sustainable plans, investment and training in green sectors are necessary to make easier the transition from a services low-valued economy to an innovative and sustainable model to make our country an environmental reference in Europe.

Rethinking Care Through Social Reproduction: Articulating Circuits of Migration

Care has come to dominate much feminist research on globalized migrations and the transfer of labor from the South to the North, while the older concept of reproduction had been pushed into the background but is now becoming the subject of debates on the commodification of care in the household and changes in welfare state policies. This article argues that we could achieve a better understanding of the different modalities and trajectories of care in the reproduction of individuals, families, and communities, both of migrant and nonmigrant populations by articulating the diverse circuits of migration, in particular that of labor and the family. In doing this, I go back to the earlier North American writing on racialized minorities and migrants and stratified social reproduction. I also explore insights from current Asian studies of gendered circuits of migration connecting labor and marriage migrations as well as the notion of global householding that highlights the gender politics of social reproduction operating within and beyond households in institutional and welfare architectures. In contrast to Asia, there has relatively been little exploration in European studies of the articulation of labor and family migrations through the lens of social reproduction. However, connecting the different types of migration enables us to achieve a more complex understanding of care trajectories and their contribution to social reproduction.

Territoriality and Migration in a Divided Society: Lay Theories of Citizenship and Place in Northern Ireland

The study of citizenship has increasingly focused on the ways in which spatialized understandings of the concept can be used to marginalise and exclude social groups: exclusive constructions of national boundaries, local neighbourhoods and public spaces can deny marginalised groups their social and political rights. Less attention has been paid to how constructions of place can accommodate different groups’ rights and promote peaceful coexistence. This is particularly important in locations where migration disrupts existing understandings (‘lay theories’) of the relationship between residency, identity and collective rights. The present research examines how spatialized understandings of citizenship shape perceptions of intergroup mixing in previously segregated areas of a post-conflict society. Critical Discursive Social Psychological (CDSP) analysis of 30 interviews with long-term residents and recent migrants to increasingly mixed areas of Belfast shows that, while all pa
rticipants acknowledged Northern Ireland’s territorialisation, different lay theories of citizenship underpin the possibility and desirability of intergroup coexistence. Long-term residents drew upon understandings of the negative citizenry of the outgroup to argue against the possibility of peaceful coexistence within their locale, while recent incomers gave evidence of their own experiences of good citizenship within the shared spaces of neighbourhood to demonstrate that this could and should be achieved. The implications of lay theories of citizenship for the study of residential migration and mixing are discussed

Salicaceae Endophytes: Growth Promotion Potential in Rice (Oryza sativa L.) and Maize (Zea mays L.) and Bio-Control of Plant Pathogen

Thesis (Ph.D.)--University of Washington, 2016-08

Transformative Political Spaces? Asambleas Populares, Identity, Alliances and Belonging in Buenos Aires

Thesis (Ph.D.)--University of Washington, 2016-08

The Political Economy of Reproduction: Motherhood, Work and the Home in Neoliberal Britain

This thesis investigates how the processes and practices of reproduction have been transformed not only by the ascendant political rationality of neoliberalism but also by women’s struggles that have reconfigured motherhood, the domestic home and the gendered organisation of employment. Through exploring both the 1970s feminist demand for “free 24- hour nurseries” and the contemporary provision of extended, overnight and flexible childcare, care that is often referred to as “24-hour childcare”, the research contributes to feminist understandings of the gendered and racialised class dynamics inside and outside the home and the wage. The research repositions the ‘Woman Question’ as, yet again unavoidable and necessary for comprehending and intervening in the brutalising consequences of capitalist accumulation. Situated within the Marxist feminist tradition, the work of reproduction is understood as a cluster of tasks, affective relations and employment that have historically been constructed and experienced as ‘women’s work’. The interrelation between the subjectivity of motherhood and the political economy of reproduction is analysed through a feminist genealogy of 24-hour childcare in Britain. Using ethnographic encounters, archival research and interview data with mothers and childcare workers, the research tells a story about the women who have worked both inside and outside the home, raised children, cooked and cleaned, and who, both historically and in the present, continue to create an immense amount of wealth and value. As women's labour market participation has steadily increased over the last 40 years, the discourse of reproduction has shifted to one in which motherhood is increasingly constructed as a choice. Within neoliberal discourse the decision to have a child is constructed as a private matter for which individuals bear the costs and responsibility. The thesis argues that, as a result of motherhood being constructed more and more as something that is chosen, the spaces of resistance and opposition towards motherhood have been limited and resistance has been individuated and privatised.

Sasakian quiver gauge theories and instantons on cones over lens 5-spaces

We consider SU(3)-equivariant dimensional reduction of Yang Mills theory over certain cyclic orbifolds of the 5-sphere which are Sasaki-Einstein manifolds. We obtain new quiver gauge theories extending those induced via reduction over the leaf spaces of the characteristic foliation of the Sasaki-Einstein structure, which are projective planes. We describe the Higgs branches of these quiver gauge theories as moduli spaces of spherically symmetric instantons which are SU(3)-equivariant solutions to the Hermitian Yang-Mills equations on the associated Calabi-Yau cones, and further compare them to moduli spaces of translationally-invariant instantons on the cones. We provide an explicit unified construction of these moduli spaces as Kahler quotients and show that they have the same cyclic orbifold singularities as the cones over the lens 5-spaces. (C) 2015 The Authors. Published by Elsevier B.V.

Análise bioclimática e investigação do conforto térmico em ambientes externos: uma experiência no bairro de Petrópolis em Natal/RN

This study was intended to investigate how the urban form has been influencing the changes in the climate of the city and make a correlation between the climate and the thermal sensation of the users of open spaces. The research was developed in the district of Petrópolis in Natal/ RN whose occupation has been almost consolidated. Among other reasons, this district was selected because it was planned considering the environmental aspects of comfort. The methodologies used are based on KATZSCHNER (1997) and OLIVEIRA (1988) studies, which suggest the drawing and analysis of maps of the area under study, including topography, height of the buildings, land use, green areas, and types of soil pavement, as well as measurement of the environmental variables: air temperature, relative humidity, direction and wind speed for a comparative study. As part of this, study local users of the district were interviewed about their thermal sensations in open spaces. For the statistical analysis, data was collected at 10 distinct points characterized by BUSTOS ROMERO (2002), being 8 within the district and 2 at different places (outside the district), at climatologic stations, in 3 periods (August/2000, January/2002 and June/2002), for 4 consecutive days for each measurement (from Sunday to Wednesday) at the time of lower and higher temperatures in the city, 6:00 am and 1:00 pm, respectively. At the same time interviews were carried out with users of the open spaces in the area, totaling 171 valid formularies. The urban form showed a rather leveled topography, great diversity of land use and height of the buildings, with the existence of an area mostly occupied with high buildings, very little green area and soil practically impermeable. The statistical analysis showed high temperature and humidity levels. The wind direction is predominantly Southeast with extremely variable speeds. When the data from this district is compared with the data from other areas in the city and its outskirt, it was observed that this district is hotter and less ventilated than the others; besides, most users said that they felt uncomfortable in the local environmental conditions. The results of the analysis generated a zoning for the district with recommendations for soil occupation. The profile of the user was defined regarding the thermal comfort, as well as some discussion about the comfort parameters, including the proposal of limiting areas of temperature and humidity for the thermal comfort in the open spaces