VictorJuiz/thesis huggingface dataset:
Ties that bind? Networks and Gender in International Migration 

his thesis examines the roles of migrant networks in the migration and subsequent economic integration of Senegalese men and women in France, Italy and Spain. It challenges the assumption that networks are invariably sources of assistance in the migration process and examines the factors responsible for variations in their influence. In doing so, it uses quantitative methods and analyzes recently collected longitudinal data within the framework of the Migration between Africa and Europe (MAFE) project. Migrant networks -– members of the respondent’s personal circle that have international migration experience – are conceptualized as a form of individual-level social capital that may or may not shape specific outcomes. The thesis contributes to the literature by adopting a longitudinal view of the migration process and considering both migration behaviour and migrants’ labour market trajectories at destination. In doing so, it bridges two areas of research that have mostly developed separately. Second, the intersections between migrant networks and gender, insufficiently studied so far, are here examined in detail. Furthermore, the role of networks in different forms of female mobility – often confounded in previous work - are here analysed separately. Last but not least, the thesis makes a methodological contribution by operationalizing migrant networks in a more dynamic way than previous work.
Findings suggest that migrant social capital has a large influence on migration behaviour, while playing a lower and more ambivalent role in migrants’ labour market outcomes at destination. Furthermore, several dimensions are found to shape the extent and channels of networks’ influence. First, men and women do not rely on the same ties in their migration process. Also, women migrating independently of a partner make a different (and greater) use of their migrant connections than those joining their spouse abroad. Migrant social capital is found to work along gender lines: only access to male migrant networks increases the migration likelihood or the job prospects at destination for prospective male migrants. On the other hand, female networks play a crucial role in independent women’s migration process. However, while they greatly increase women’s likelihood of moving to Europe on their own, they also lead them to lower-status jobs. Last, the context of destination was found to shape the operation of migrant networks. In France, where a socio-economically diverse Senegalese community has long been established, pre-migration ties at destination lead to better economic opportunities. In contrast, migrant networks in Italy or Spain appear to channel male migrants into street-selling activities. Thus, bonding social capital in the form of migrant networks appears to reproduce the ethnic niches developed at destination and the gender-segmented nature of the labour market.

Keywords: gender
migrant networks
international migration
social capital
Senegal
Advisor: Heath, A
Beauchemin, C
Human will and divine will in Roman divination

This thesis examines the relationship between human will and divine will as mediated through state divination in the Roman Middle and Late Republic. The nature of ancient evidence for incidents involving state divination, and for divinatory ‘rules’, is scrutinized: the historicity of many divinatory incidents recorded in Roman tradition is defended, and the existence of a body of basic divinatory ‘rules’ posited. Current models of the relationship between human and divine will in Roman divination are examined; the thesis challenges the ‘alignment’ model wherein the outcomes of state divination are assumed routinely to have aligned with the will of their recipients. Cases where divinatory outcomes do not appear to have aligned with recipients’ will are identified in Cicero, Livy, and Cassius Dio. The modern view that state divinatory techniques (auspication, haruspicy in sacrifice, and prodigy-interpretation) routinely generated desired results is called into question. The thesis then re-evaluates the canon of ancient ‘rule-statements’ generally cited as evidence for augural ‘principles’ that the report of a sign was considered as valid as an actual sign, and that it was acceptable for individuals to fabricate or to reject signs at will. Instead, it is suggested that a real sign was preferable to a reported one, and that the validity of an oblative sign depended on the individual’s awareness of it. Finally, the thesis proposes an alternative to the currently-accepted understanding of the auspicial procedure ‘servare de caelo’, arguing that even this procedure need not be seen as invariably generating signs in alignment with human will and as countenancing sign-falsification. These conclusions are held to encourage a re-consideration of the modern understanding of the nature of Roman state divination and of Roman religion.

Keywords: prodigies
augury
Advisor: Price, SRF
Clark, A
Bispham, E
'The Arada have been eaten': living through marginality in Addis Ababa's inner city

This thesis examines marginality as a regime of interconnectedness. Drawing on the ethnographic material from a 16-month-fieldwork between October 2009 and December 2010 on the street economy and streetlife in Arada, the old city centre of Addis Ababa’s inner city, I argue that marginalized subjects are not to be seen as social actors that inhabit and create alternative and parallel social, political and economic realities away from the mainstream society. Rather, the way the urban poor are connected and integrated in the broader political economy of the Ethiopian urban society frames and defines modalities, forms and experiences of marginality. From this perspective, this thesis focuses on the on-going reconfiguration of the street economy in Addis Ababa’s inner city. Since the early 2000s, the increasing concern with poverty reduction and good governance in the development agenda has concurred with the attempts of the ruling party to expand its machinery of political control and mobilization at the grassroots of urban society. In this context, under the impact of development programs promoting the establishment of small-scale enterprises, the street economy has undergone a pervasive process of formalization and politicization that has come to advance the realization of an authoritarian form of developmental state, while imposing a regime of unskilled and badly paid labour on the street. This thesis examines this process by looking at the history of streetlife in Arada, as a terrain of social, economic and political practice, and it recounts the everyday life and life trajectories of those involved in the street economy. In particular, I look at how the political reconfiguration of the street economy has come to intertwine with the way living through marginality and dealing with forms of social inequality on the street have been historically conceptualized and experienced in Addis Ababa’s inner city.

Keywords: Ethiopia
gangs
Addis Ababa
politics
marginality
youth
Advisor: Pratten, D
Regulation of the pharmaceutical market in the South Korean National Health Insurance

This thesis explores the implications of democratisation on the regulation of health care providers. It examines the reforms in relation to two regulatory policies in the pharmaceutical market of the National Health Insurance (NHI) in South Korea – the separation of prescribing and dispensing (SPD) and the pharmaceutical pricing policy – conducted in two periods – the 1980s under the authoritarian regime and the 1990s under the democratised regime. The misuse and overuse of drugs had long been recognised as a problem for the NHI, and the tight regulation of the SPD and pharmaceutical pricing as potential solutions.
Democratisation seems unlikely to tighten the government’s regulation of the SPD and pharmaceutical prices. On the one hand, the Korean authoritarian regime was known as being capable of conducting top-down regulation of societal groups, and democratisation as having liberalised the government-society relationship. On the other, pharmaceutical regulation is a sophisticated and detached issue, which restricts the ability of laypeople to mobilise and exert bottom-up pressure for regulation. Nevertheless, the authoritarian government failed to tighten, and even loosened these regulations, whereas the democratised government tightened them.
This thesis explains this puzzle by focusing on the features of the agenda-setting process and the articulation of policy issues therein. In the 1980s, the SPD and the pharmaceutical reimbursement pricing policy were administrative issues, discussed exclusively between bureaucrats and the central associations of health care providers, which resulted in loose regulation. In contrast, in the 1990s, reform-oriented professionals and NGOs raised these issues and put them on the political agenda, which motivated the government to conduct tighter regulation.
This thesis suggests some general implications of democratisation on the politics of regulation. The hierarchical and exclusive authoritarian policy network aims to realise policy goals set by ruling elites; however, for other policy issues, societal partners can utilise this network to promote their preferred policies. Democratisation, which promotes competitive elections and political rights, allows previously excluded policy actors to participate in policy-making networks. These new actors include professionals and activists who are able to understand regulatory issues and articulate them in ways that are salient to politicians and the general public, which will motivate the government to tighten the regulation governing its traditional policy partners.

Keywords: pharmaceutical market
policy instruments
regulation
health care providers
national health insurance
agenda-setting
democratisation
Advisor: Ringen, S
Measurement of wind on the surface of Mars

The Martian atmosphere is of great scientific interest, both because of its similarity to Earth’s atmosphere, and because of its relevance to exploration of Mars. Although satellite instruments have provided a wealth of atmospheric data, they have provided little information about the atmospheric boundary layer. Conditions in the lowest few metres of the Martian atmosphere are perhaps the most directly interesting to humans, as this is the portion of our own atmosphere with which we have the most contact.
In this thesis is described the design, calibration and operations planning for a new wind sensor for use on Mars. This sensor is lighter and smaller than previous Mars wind sensors. At the time of writing, the wind sensor is on its way to Mars as part of the science payload of Beagle 2, a small exobiology lander due to arrive in December 2003.
The Beagle 2 wind sensor (B2WS) is a hot-film anemometer. Three platinum films are equally spaced around the surface of a vertical cylinder. A known current is dissipated in each film, heating the film 40-80°C above the ambient gas temperature. The film temperature is obtained by measuring its resistance. An effective heat transfer coefficient is then calculated for each film. A novel scheme has been developed which allows calculation of a wind vector from the differences between these heat transfer coefficients, rather than from their average. This makes the measured wind vector less prone to common-mode errors such as uncertainties in air temperature or sky temperature.
The sensor was calibrated in a low density wind tunnel, optimised to provide stable winds of air or carbon dioxide at Martian pressures (5 – 10 mbar) and speeds (0.5 – 30 m/s). The flow field in the test section was calculated using analytical and finite element modelling techniques, and validated experimentally using a pitot probe. This facility’s stability and accuracy represent a significant improvement over previous calibration facilities.
An analytical model of heat flow in the sensor has been developed in order to permit correction for conditions which may be encountered on Mars, but were not tested for in the wind tunnel. The wind sensor’s performance in a real Martian atmosphere is simulated using wind and temperature data from a previous Mars lander.
The position of the wind sensor position at the end of Beagle 2's motorised arm allows several new possibilities for wind measurement on Mars that were unavailable in previous missions. The height of the wind and air temperature sensors can be adjusted to any height between 20 and 95 cm above the ground. The temperature sensor can be scanned horizontally and vertically above the lander to study convective updrafts above the heated lander. Planned operations sequences on Mars are discussed.

Keywords: wind tunnel
wind sensor
Mars
meteorology
Beagle 2
anemometry
Advisor: Calcutt, SB
Simulation, synthesis, sunlight: enhancing electronic transport in solid-state dye-sensitized solar cells

The solid-state dye sensitized solar cell (SDSC) is an emerging photovoltaic technology which promises inexpensive materials, roll-to-roll processing, and a stable architecture. In this thesis, I seek to enhance electronic transport in order to enable thicker devices and yield higher power conversion efficiencies. I adopt a multipronged approach to advance three aims, employing analytical, computational, and experimental methodologies.
First, I generalize existing models of the dye sensitized solar cell (DSSC) to allow simple parameter fitting of real devices and to account for previously ignored electronic processes. In Chapter 3 and Chapter 4 I present a nondimensional model capable of fitting real devices and simulating transient behavior without extensive material knowledge. Subsequently in Chapter 5, I introduce a novel three-dimensional model which incorporates electronic drift.
Second, in Chapter 4 I critically assess a widespread method of measuring the charge collection efficiency, the summary metric that describes the efficacy of charge transport in the SDSC. I discover that the conventional method is inaccurate for values of the collection efficiency below 90% because of large experimental error and an intrinsic inaccuracy in applying a transient method to measure a steady-state parameter.
Third, I aim to increase the rate of charge transport by employing new materials and nanostructures in the place of conventional nanocrystalline TiO2. In Chapter 5, I present evidence of faster transport and enhanced efficiency in flexible SnO2 nanowire SDSCs, ZnO nanowire SDSCs, and the first viable SnO2/P3HT SDSC, where photoanode and hole transporter have been replaced with higher mobility materials. Finally, in Chapter 6, I investigate use of TiO2 mesoporous single crystals (MSCs) with high surface area and extended crystallinity. After demonstrating the viability of MSCs in SDSCs, I examine enhanced transport caused by the background doping effect of thermal treatment. Together, the progress achieved toward diverse and ambitious goals advances the field and delineates routes to future progress for SDSC development.

Keywords: tio2
sno2
collection efficiency
modeling
solid-state
transport
mesoporous single crystals
msc
dye-sensitized
zno
nanowires
solar panels
mobility
photovoltaic
solar
solar cells
electronic transport
spiro
transient perturbation
Advisor: Snaith, H
Imaging of HIV-1 spread from T cells and Macrophages to Astrocytes

CD4+ T cells and macrophages are the principal targets of HIV-1. They can be productively infected with the virus and transfer virions to contacting bystander cells. It has been suggested that soon after initial infection, free virions and virus-bearing or infected T cells and macrophages can enter the brain, triggering a cascade of inflammatory signals and recruitment of other immune cells. Chronic inflammation and increased viral antigens in the brain lead to HIV-1 associated neuropathy.
Once free virions or infected cells enter the central nervous system, the first type of brain cells that they are likely to encounter are astrocytes, which extend endfeet around the blood vessels. These cells have been observed to contain virions and viral products, but their permissivity to productive infection has not been clearly demonstrated. By contrast, productive infection of resident microglia and perivascular macrophages is well established.
Here, I investigate the permissivity of astrocytes to HIV-1 infection and found no evidence of infection by the free route. However, I found that astrocytes intimately contact HIV-1 infected macrophages and CD4+ T cells and, in some cases, extend filopodial membrane toward the infected cell. In astrocyte-T cell contact sites, termed synapses, virions appear to move along the astrocytic filopodia from the T cell to the astrocyte. In this case, the target cell mediated viral transfer across the intercellular gap.
HIV-1-infected macrophages released virus that associated with astrocytes, remaining either on the surface of the astrocytes or within intracellular compartments. HIV-1 bound to astrocytes could be transmitted efficiently to permissive cells in trans. However, astrocyte-associated virus was sensitive to inhibitors including proteases and neutralizing antibodies, suggesting a surface-accessible compartment. This work provides insight into mechanisms of HIV-1 spread in the brain from infected CD4+ T cells and macrophages to astrocytes and their potential as virus reservoirs.
I also optimized high resolution, correlative focused ion beam scanning electron microscopy technology to answer fundamental biological questions. I demonstrate the application of the technology to study skeletal muscle cell differentiation mechanisms. I combine the power of genetic mapping with structural analysis to qualitatively and quantitatively describe cellular states and functions. Using semi-automatic image processing analysis, I was able to compute high volumes of data and generate statistics that relate quantitative measurements of cellular structures to functions. The toolset developed here will be instrumental in studying cells and tissues in both research and clinical applications.

Keywords: Immunology
Biology
Infectious diseases
HIV/AIDS
Advisor: Sattentau, Q
The British cotton industry and domestic market

The British market has until now received little of the credit due it as the chief support of the cotton industry during the final fifty years of the eighteenth century. The manner in which this support was extended involved a restructuring of the economy, as illustrated by a qualitative change in the consumer habits of the population; the advent of a mass consumer society. The demand for cotton textiles was a distillation of many amorphous desires and aspirations that flourished in eighteenth century Britain. This was not a frivolous whim on the part of a small host of women, but a powerful economic force which might be tapped through the female section of the society, but which involved the entire society on a fundamental level. When the fashionable urge was translated into a demand for inexpensive, attractive cottons the industry was tied to one of the most potent commercial forces of that period.
As a result of recent research, historians are coming to recognize a feature of economic development in the last half of the eighteenth century never before sufficiently acknowledged. This quality in the economic life of the nation set it off from all previous eras. During that time an economy developed and prospered that was geared to the profits of popular fashions, produced cheaply and in quantity for the mass market. Never before had a trade developed so quickly, exclusively on popular demand for mass-produced fashionable textiles. The provision of news on current fashions throughout the nation sparked generalized interest in British manufacturers among the middle and working classes. These classes were the basis of the market on which the cotton. industry depended for its vitality; it was among these sections of society that the creations of the cotton industry found the great new markets of the eighteenth century. Institutionalized dessimination of fashion information in print; a homogeneity of demand throughout the nation and the ranks of the nation; and the diversification and development of cotton products in response to this demand were the principal characteristics of this economic and social phenomenon.
Preclinical comparison of novel rotator cuff repair scaffolds

Background: Rotator cuff tears affect up to 16% of the adult population, but inadequate treatment options are currently available. Our research group has developed a range of degradable scaffolds, manufactured from electrospinning and weaving, designed to assist the tendon repair both biologically and mechanically. The scaffolds have been successfully tested in vitro, however, to further assess the potential of these materials for clinical applications, an in vivo study is necessary.
Aim: The overall aim of this study was to assess the safety and biocompatibility of the scaffolds in vivo. The objectives included optimisation of the weaving process and assessment of the systemic and local host reaction to scaffolds upon implantation.
Methodology: The weaving process was first optimised to achieve satisfactory mechanical properties for the woven components. For the in vivo study, four different scaffolds were implanted into the shoulder of Lewis rats. The infraspinatus was transected and repaired using the scaffolds and at six timepoints up to 5 months, the shoulder joint was dissected for histological assessment. The foreign body response was assessed by hematoxylin and eosin (H&E) staining and by evaluating the presence of foreign body giant cells (FBGCs).
Results and Discussion: The optimisation of the weaving process resulted in the development of scaffolds with improved tensile strength. Upon implantation, most scaffolds did not indicate any severe adverse reaction. However histology revealed that the presence of large quantities of electrospun material elicits a strong foreign body reaction, with significantly more FBGCs in the group which had an electrospun scaffold compared to the positive control.
Conclusion: Scaffolds containing no or moderate electrospun materials seemed to be well tolerated by the rats and appear safe for human use. However, implanting large volumes of electrospun material may elicit an unwanted foreign body reaction and more in vivo work is needed to understand its tissue integration.

Keywords: Polydioxanone
Implant
Electrospinning
Tendon
Tendinopathy
Rotator cuff
Advisor: Carr, A
Mouthuy, P