Fat Chance? Eating well with margarine

Since its invention nearly 150 years ago, margarine has proven itself adaptable to multiple ingredients and techniques whilst continuing to mimic the fatty tastes familiar to eaters in Northern Europe. In this thesis I argue that it this malleability that makes margarine a useful subject with which to explore constructions of eating-well. This thesis examines the ways in which margarine is done, why it is done in the ways that it is, and explores how such doings frame possibilities for eating-together-well. Eating-well has become something of a social obsession in the UK in recent years. Individual eating practices have become framed as a responsibility of care for personal and societal health, for agricultural workers, animal welfare and for the future of the planet. Nonetheless, it is commonly believed that although deeply personal, food habits are culturally and socially engrained, and as such are hard to change. This empirically led thesis, examines the knowledges and practices of producers and consumers, and establishes habit formation as a typical response by both producers and consumers to becoming overwhelmed with incompatible knowledges and information, compelling them to choose, prioritise and juggle ‘moral’ values. Yet, I demonstrate that such habits only remain stable until disrupted by an event which overflows and troubles this settlement. Building on this, this thesis then examines the possibilities offered by the creation of micro-events for encountering, knowing, and relating with, margarine matters anew. In this way, this thesis investigates the values, norms and power relations entangled with the presentation and enactment of margarine and its constituent parts as ‘good’ or ‘bad’ foods, examining both what these framings do, and how they are maintained. In approaching margarine matters in this way, this thesis offers three key contributions to the area of food geographies. Firstly, I demonstrate how commodity frameworks shift political problems in to a technical and administrative realm and close down spaces of critical thought and political intervention. Secondly, I establish that ‘strange encounters’ are events which can add to understandings of the more-than human world-making of food knowledges, practices, and habits. Thirdly, I determine that the novel methodological approach of ‘playing with our food’ is a productive technique with which to prefigure and rehearse more nuanced ethical understandings of eating-well as a relational doing that is excessive to consuming-well.ESR

Fat Chance? Eating well with margarine

Since its invention nearly 150 years ago, margarine has proven itself adaptable to multiple ingredients and techniques whilst continuing to mimic the fatty tastes familiar to eaters in Northern Europe. In this thesis I argue that it this malleability that makes margarine a useful subject with which to explore constructions of eating-well. This thesis examines the ways in which margarine is done, why it is done in the ways that it is, and explores how such doings frame possibilities for eating-together-well. Eating-well has become something of a social obsession in the UK in recent years. Individual eating practices have become framed as a responsibility of care for personal and societal health, for agricultural workers, animal welfare and for the future of the planet. Nonetheless, it is commonly believed that although deeply personal, food habits are culturally and socially engrained, and as such are hard to change. This empirically led thesis, examines the knowledges and practices of producers and consumers, and establishes habit formation as a typical response by both producers and consumers to becoming overwhelmed with incompatible knowledges and information, compelling them to choose, prioritise and juggle ‘moral’ values. Yet, I demonstrate that such habits only remain stable until disrupted by an event which overflows and troubles this settlement. Building on this, this thesis then examines the possibilities offered by the creation of micro-events for encountering, knowing, and relating with, margarine matters anew. In this way, this thesis investigates the values, norms and power relations entangled with the presentation and enactment of margarine and its constituent parts as ‘good’ or ‘bad’ foods, examining both what these framings do, and how they are maintained. In approaching margarine matters in this way, this thesis offers three key contributions to the area of food geographies. Firstly, I demonstrate how commodity frameworks shift political problems in to a technical and administrative realm and close down spaces of critical thought and political intervention. Secondly, I establish that ‘strange encounters’ are events which can add to understandings of the more-than human world-making of food knowledges, practices, and habits. Thirdly, I determine that the novel methodological approach of ‘playing with our food’ is a productive technique with which to prefigure and rehearse more nuanced ethical understandings of eating-well as a relational doing that is excessive to consuming-well.ESR

Experimental analysis of impacts with large elastic deformations. Part 1: linear motion

A measurement system is presented which uses a small number of sensors to capture relevant information by a limited number of measurements during a high-speed impact between two lightweight bodies. Two laser Doppler vibrometers and a piezoelectric accelerometer are arranged to capture data from which the variation of deformations, velocities and forces over time during an impact can be determined. The golf club - ball impact is chosen as an example. Large elastic deformations are measured on the golf ball during the impact and these can be related to the variation of the impact force over time. This information leads to greater understanding of the relationship between two impacting bodies and can be used in the validation of analysis by techniques such as finite element modelling

Developments in laser Doppler accelerometry (LDAc) and comparison with laser Doppler velocimetry

This paper outlines the principles and early development of an interferometric technique for remote measurement of vibration acceleration — laser Doppler accelerometry (LDAc). One of the key advantages of LDAc over laser Doppler velocimetry (LDV) is its ability to measure extremely high vibration accelerations and shocks, effectively without limit, and this point is expanded upon in the paper. Early LDAc development showed how unwanted, velocity-dependent optical beats could occur on the photodetector but novel use of a frequency shifting device, whose primary purpose was for direction discrimination, was successful in isolating the required acceleration-dependent beat. A problem remained in the rate at which the velocity-dependent and acceleration-dependent beats broadened during target motion. In a further development, it was possible to 'select’ a back reflection to produce a velocity-dependent beat that was NOT modulated in the presence of target motion. The acceleration-dependent beat could then be demodulated and preliminary results are given to demonstrate this outcome

Fragmentary embeddedness: Challenges for alternative food networks in Guangzhou, China

Alternative food networks (AFNs) have been viewed as being more deeply embedded in the fabric of places and the social relations of their food systems than conventional food networks, and have been regarded as ‘spaces of hope’ for addressing sustainability challenges associated with global food systems. This paper argues that embeddedness, however, is contingent and shifting rather than an intrinsic quality, and is shaped by the cultures of production, trade, and consumption in particular places. This paper evaluates challenges that emerging AFNs in Guangzhou, China, are confronting relating to their embeddedness in place. The paper is underpinned by research involving interviews and focus groups with key food system actors and stakeholders in Guangzhou, including government officials, organic farmers, retailers, and non-governmental organizations. It demonstrates that AFNs in Guangzhou achieve only ‘fragmentary embeddedness’ in local cultures and systems of production, retail, and consumption. Despite strong social relationships established by a few successful farms and their loyal consumer groups, AFNs more broadly have struggled to embed themselves in the social and cultural fabric of the city and its commercial foodscapes. In terms of territorial embeddedness, the association of AFNs with western values, which do not always translate into Guangzhou's production and retail systems, can limit their embeddedness and scaling up in this context. The split between ‘new’ farmers (i.e., educated and urban-rooted producers ‘returning to the land’) and common farmers (i.e., local peasants) further exacerbates the difficulty of integrating AFNs in rural communities. Regarding social embeddedness, AFNs struggle to meet local consumer preferences regarding food appearances, quality, and taste, and therefore consumer trust in them is limited. In terms of institutional embeddedness, AFNs lack government policy support, despite the alignment of their missions with national strategies. More efforts are needed to deepen the embeddedness of AFNs in Guangzhou's food system and cultures if they are to respond effectively to China's food crisis and wider sustainability issues

Remote vibration measurements: compensation of waveform distortion due to whole body translations

Remote vibration measurements using the laser Doppler technique are a practical and increasingly popular alternative to the use of contacting transducers. This study concerns aspects of non-contact measurements that result when the vibrating target additionally undergoes larger scale whole body translation. The characteristics of a single remote measurement of steady state vibration on a body undergoing whole body translation are investigated in both the time and frequency domains, where waveform distortion and whole body target displacement induced harmonics are observed. A technique which compensates for the relative whole body displacement between the target and a remote transducer is introduced, in which two simultaneous remote measurements are combined to derive a closer estimate of the measurement which would be made by a contacting transducer attached to the target surface. A substantial improvement in the data quality obtainable from a single remote measurement is demonstrated using a numerical simulation and in experimental data captured remotely from a golf club head during and immediately following an impact with a golf ball. Remote measurements are particularly suited to analysis of impacting bodies and the displacement compensation technique is thus developed in this paper to investigate transient pulse propagation effects. The improvement in data quality obtained is demonstrated using data pertaining to the deformation of a golf ball during an impact in which the whole ball accelerates forwards rapidly

Fragmentary embeddedness: Challenges for alternative food networks in Guangzhou, China

Alternative food networks (AFNs) have been viewed as being more deeply embedded in the fabric of places and the social relations of their food systems than conventional food networks, and have been regarded as ‘spaces of hope’ for addressing sustainability challenges associated with global food systems. This paper argues that embeddedness, however, is contingent and shifting rather than an intrinsic quality, and is shaped by the cultures of production, trade, and consumption in particular places. This paper evaluates challenges that emerging AFNs in Guangzhou, China, are confronting relating to their embeddedness in place. The paper is underpinned by research involving interviews and focus groups with key food system actors and stakeholders in Guangzhou, including government officials, organic farmers, retailers, and non-governmental organizations. It demonstrates that AFNs in Guangzhou achieve only ‘fragmentary embeddedness’ in local cultures and systems of production, retail, and consumption. Despite strong social relationships established by a few successful farms and their loyal consumer groups, AFNs more broadly have struggled to embed themselves in the social and cultural fabric of the city and its commercial foodscapes. In terms of territorial embeddedness, the association of AFNs with western values, which do not always translate into Guangzhou’s production and retail systems, can limit their embeddedness and scaling up in this context. The split between ‘new’ farmers (i.e., educated and urban-rooted producers ‘returning to the land’) and common farmers (i.e., local peasants) further exacerbates the difficulty of integrating AFNs in rural communities. Regarding social embeddedness, AFNs struggle to meet local consumer preferences regarding food appearances, quality, and taste, and therefore consumer trust in them is limited. In terms of institutional embeddedness, AFNs lack government policy support, despite the alignment of their missions with national strategies. More efforts are needed to deepen the embeddedness of AFNs in Guangzhou’s food system and cultures if they are to respond effectively to China’s food crisis and wider sustainability issues

Hollow golf club head modal characteristics: determination and impact applications

The design of modern hollow golf club heads is a labor-intensive process involving extensive performance testing both by robotic and real golfers. This paper describes how, by correlating club head mechanical behavior with functional performance, it will become possible to use validated computational models to predict this performance as well as related contributions to the ill-defined concept of "feel." Successful use of experimental modal analysis to validate a hollow golf club head finite element model is reported. Modal tests employing noncontacting, laser-based transducers facilitated identification of the natural frequencies and corresponding modeshapes for the three main surfaces of the club head. The experimental data suggest predominantly different modal characteristics for each surface, and this compares favorably with equivalent data obtained from the finite element model. The modal data are also used to identify surfaces responsible for particular frequency components present in the club head impact sound spectrum. The potential for detailed impact performance prediction using the finite element model is further demonstrated by comparison of computed and experimental club head acceleration measurements recorded during simulated and actual club-ball impacts