46 research outputs found
Strategie der schnittaufteilung. Еine wirksame methode zur leistungsanpassung und verbesserung des dynamischen schnittverhaltens beim planfräsen
Der Beitrag beinhaltet eine zusammenfassende Darstellung des Prinzips der Schnittaufteilung als Methode zur dynamischen Prozessstabilisierung beim Planfräsen. Es wird dargelegt, wie die Schnittaufteilung beim Fräsen durch die Kombination von WSP mit unterschiedlichen Formen prinzipiell realisiert werden kann. Neben der Erläuterung weiterer positiver Effekte wird auf die Nutzung der Schnittaufteilung zur Leistungsanpassung unter stabilen Bearbeitungsbedingungen eingegangen.В статті розглядається ефективний метод регулювання потужності фрезерування та покращення динамічних характеристик фрезерування. Запропоновано стратегію скорочення проходів
The complications of ‘hiring a hubby’: gender relations and the commoditisation of home maintenance in New Zealand
This paper examines the commoditization of traditionally male domestic tasks through interviews with handymen who own franchises in the company ‘Hire a Hubby’ in New Zealand and homeowners who have paid for home repair tasks to be done. Discussions of the commoditization of traditionally female tasks in the home have revealed the emotional conflicts of paying others to care as well as the exploitative and degrading conditions that often arise when work takes place behind closed doors. By examining the working conditions and relationships involved when traditionally male tasks are paid for, this paper raises important questions about the valuing of reproductive labour and the production of gendered identities. The paper argues that while working conditions and rates of pay for ‘hubbies’ are better than those for people undertaking commoditized forms of traditionally female domestic labour, the negotiation of this work is still complex and implicated in gendered relations and identities. Working on the home was described by interviewees as an expression of care for family and a performance of the ‘right’ way to be a ‘Kiwi bloke’ and a father. Paying others to do this labour can imply a failure in a duty of care and in the performance of masculinity
Building a politics of connectivity: intercultural in-commonness in Fairtrade
Fairtrade operates its global system through a homogenising but marketable set of standards. Combined with issues around how to include producers in governance, this has led to feelings of disconnection and disenfranchisement for the latter, which are impacting on Fairtrade’s effectiveness and legitimacy. Through a focus on the South African wine industry, this paper argues that the Fairtrade community needs to be reinvigorated through dialogical communication, impactful participation and cultural synthesis to better enact responsibility across its systemic geographical and cultural distances. “Being‐with” its multiple stakeholders makes space for a more responsive, contextual and connected system. Drawing on the ideas of Paulo Freire, the paper concludes that a Fairtrade built on solidarity through a participatory and decentralised system would allow for discussions of the ideals and practices that are essential to negotiating, and not swallowing up, the shifting “we” of Fairtrade and more effectively balancing its local and global responsibilities
On handling urban informality in southern Africa
In this article I reconsider the handling of urban informality by urban planning and management systems in southern Africa. I argue that authorities have a fetish about formality and that this is fuelled by an obsession with urban modernity. I stress that the desired city, largely inspired by Western notions of modernity, has not been and cannot be realized. Using illustrative cases of top–down interventions, I highlight and interrogate three strategies that authorities have deployed to handle informality in an effort to create or defend the modern city. I suggest that the fetish is built upon a desire for an urban modernity based on a concept of formal order that the authorities believe cannot coexist with the “disorder” and spatial “unruliness” of informality. I question the authorities' conviction that informality is an abomination that needs to be “converted”, dislocated or annihilated. I conclude that the very configuration of urban governance and socio-economic systems in the region, like the rest of sub-Saharan Africa, renders informality inevitable and its eradication impossible
Robotic milking technologies and renegotiating situated ethical relationships on UK dairy farms
Robotic or automatic milking systems (AMS) are novel technologies that take over the labor of dairy farming and reduce the need for human-animal interactions. Because robotic milking involves the replacement of 'conventional' twice-a-day milking managed by people with a system that supposedly allows cows the freedom to be milked automatically whenever they choose, some claim robotic milking has health and welfare benefits for cows, increases productivity, and has lifestyle advantages for dairy farmers. This paper examines how established ethical relations on dairy farms are unsettled by the intervention of a radically different technology such as AMS. The renegotiation of ethical relationships is thus an important dimension of how the actors involved are re-assembled around a new technology. The paper draws on in-depth research on UK dairy farms comparing those using conventional milking technologies with those using AMS. We explore the situated ethical relations that are negotiated in practice, focusing on the contingent and complex nature of human-animal-technology interactions. We show that ethical relations are situated and emergent, and that as the identities, roles, and subjectivities of humans and animals are unsettled through the intervention of a new technology, the ethical relations also shift. © 2013 Springer Science+Business Media Dordrecht
The geographies of food banks in the meantime
The authors gratefully acknowledge the support
given by the British Academy for this research (grant
no. SG131950). The ‘Emergency Food Provision in
the UK’ research includes: over eighteen months of
ethnographic research in a Trussell Trust Foodbank;
a national survey of the Trussell Trust Network and
Independent food banks (and other food aid providers);
and in-depth interviews with food bank managers,
volunteers and service-users in London,
Bristol, Leicestershire, South Wales, Devon, and
Cornwall
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Convective self-aggregation in numerical simulations: a review
Organized convection in the Tropics occurs across a range of spatial and temporal scales and strongly influences cloud cover and humidity. One mode of organization found is “self-aggregation”, in which moist convection spontaneously organizes into one or several isolated clusters despite spatially homogeneous boundary conditions and forcing. Self-aggregation is driven by interactions between clouds, moisture, radiation, surface fluxes, and circulation, and occurs in a wide variety of idealized simulations of radiative-convective equilibrium. Here we provide a review of convective self-aggregation in numerical simulations, including its character, causes, and effects. We describe the evolution of self-aggregation including its time and length scales and the physical mechanisms leading to its triggering and maintenance, and we also discuss possible links to climate and climate change
Observing convective aggregation
Convective self-aggregation, the spontaneous organization of initially scattered convection into isolated convective clusters despite spatially homogeneous boundary conditions and forcing, was first recognized and studied in idealized numerical simulations. While there is a rich history of observational work on convective clustering and organization, there have been only a few studies that have analyzed observations to look specifically for processes related to self-aggregation in models. Here we review observational work in both of these categories and motivate the need for more of this work. We acknowledge that self-aggregation may appear to be far-removed from observed convective organization in terms of time scales, initial conditions, initiation processes, and mean state extremes, but we argue that these differences vary greatly across the diverse range of model simulations in the literature and that these comparisons are already offering important insights into real tropical phenomena. Some preliminary new findings are presented, including results showing that a self-aggregation simulation with square geometry has too broad a distribution of humidity and is too dry in the driest regions when compared with radiosonde records from Nauru, while an elongated channel simulation has realistic representations of atmospheric humidity and its variability. We discuss recent work increasing our understanding of how organized convection and climate change may interact, and how model discrepancies related to this question are prompting interest in observational comparisons. We also propose possible future directions for observational work related to convective aggregation, including novel satellite approaches and a ground-based observational network
(Re) Locating community in relationships: questions for public policy
This is the author accepted manuscript. The final version is available from SAGE Publications via the DOI in this record.This paper argues that we should think of community as being about social relationships rather than a ‘thing’ that is ‘lost’, ‘found’ or ‘made’. The paper draws on the philosophy of Roberto Esposito and the sociology of David Studdert to highlight the overlaps in their approaches to community. Both argue that community is ontological, as unavoidably ‘with us’. The paper then draws upon two empirical examples to argue that this approach could enable a different kind of public policy in relation to community. Policy would focus on existing relationships as the starting point for any efforts to effect social change. The implications for contemporary debates about localism are explored at the end of the paper.I am very grateful to David Studdert and Valerie Walkerdine for inviting me to the workshop
on community and localism held at Cardiff University in April 2014 that stimulated this special
issue of Sociological Review. I am also very grateful to the Leverhulme Trust for the research
funding and to Nick Coke, Tessy Britton and Laura Billings for their invaluable contributions to
the arguments made. The comments from three referees, the editors and Patrick Devine-Wright
were extremely helpful in improving the paper
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The implications of rural perceptions of water scarcity on differential adaptation behaviour in Rajasthan, India
Water scarcity is one of the most critical issues facing agriculture today. To understand how people manage the risk of water scarcity and growing pressures of increased climate variability, exploring perceptions of risk and how these perceptions feed into response behaviour and willingness to adapt is critical. This paper revisits existing frameworks that conceptualise perceptions of environmental risk and decision-making, and uses empirical evidence from an in-depth study conducted in Rajasthan, India, to emphasise how individual and collective memories, and experience of past extreme
events shape current definitions and future expectations of climatic risks. In doing so, we demonstrate the value of recognising the role of local perceptions of water scarcity (and how they vary between and within households) in constructing social vulnerability.
We also discuss the implications of these perceptions of risk when understanding and incentivising local adaptation pathways