VictorJuiz/thesis huggingface dataset:
Silk cocoons as composites

This thesis looks at the engineering aspects of silkworm cocoons as a structural biological composite system. A wide range of species of silk cocoons were studied for their morphologies, physical properties and mechanical behaviour. A silk cocoon can be described very broadly as a nonwoven fibre composite made of silk fibres bonded by sericin binder, although the a variety of species can show a diversity of structural features of the layers, porosity, degree of orientation, binding density and presence of crystals etc. These structural differences lead to diverse cocoon mechanical behaviour. Tensile and compressive properties of cocoons are tested and linked to their individual interfibre bonding, connectivity and density. Gas diffusion through the cocoon walls is controlled by the combination of thickness and density.
In addition, a physically realistic quantitative model is developed, which links directly the structure and mechanical properties of silk cocoons. The gradual loss of connectivity of the interfibre bonding is the key mechanism for the deformation of cocoons. It can be quantified as a strain activated function of the bonding up to a failure criterion, where either a percolation threshold of 50% of these bonds or the failure stress of the binder arrives. For Bombyx mori cocoon, which has a graded-layer structure, the model was enhanced to include the contribution of interlayer and intralayer bonding in the system. This model can also be applied to other nonwoven fibre and particulate composites using a small number of physically realistic model parameters, and will be a valuable ‘bioinspired’ tool for the development of new composite systems.
Based on the understanding of structure-mechanical property relationships in silkworm cocoons, an engineering approach was used for examining cocoon as an impact resistant structural material that provides mechanical protection from environmental threats. In addition, silk cocoons were used as a nonwoven reinforcement to develop an engineering composite by increasing the connectivity (more binder) in the cocoon. Using polyurethane or regenerated silk fibroin of medium concentration can increase the toughness of cocoons, and epoxy or regenerated silk fibroin of high concentration binding leads to a brittle system.

Keywords: cocoon
biocomposites
biomaterials
silk
Advisor: Vollrath, F
Porter, D
Inventing the veteran, imagining the state: post-conflict reintegration and state consolidation in Timor-Leste, 1999-2002

Conventional post-conflict state-building models approach disarmament, demobilisation, and reintegration (DDR) programmes as a means for state actors to delegitimise non-state sources of power and centralise control over coercive power with the state. The programmes carry the promise of new lives for conflict actors and a new, modern and technocratic approach to the exercise of force; they are thus central to post-conflict transformation. However, this thesis calls into question the naturalisation of 'state' and 'conflict' actors in DDR models. Instead, it finds that DDR programmes create these categories and, in doing so, serve to mask and facilitate continuities in elite power.
This thesis examines the case of Timor-Leste. In Timor-Leste, the country's new leaders - resistance actors cum state actors - have centralised legitimate power, while, at the same time, incorporated non-state, resistance-era networks and identities upon which their authority depends. The key technology through which this order has been established is a suite of reintegration programmes. In registering over a quarter of a million people and dispersing significant funds, this programme has emerged as a tool of governance. Again challenging the idea of a 'state' acting upon 'veterans', this thesis finds that these programmes constitute these identities. The act of defining non-state conflict actors who may no longer legitimately wield force also necessarily defines the category of state actors who may wield force.
In asking what these programmes 'do,' this thesis rejects conventional readings of reintegration practices as security-driven or processes like registration as purely administrative challenges. As such, this study introduces a critical, new perspective on the political economy of post-conflict reintegration programmes. It supports its findings through a mixed methods approach, combining a robust, representative survey of over 220 former resistance members with ethnographic observation and 90 semi-structured elite interviews. This thesis is thus of relevance to those interested in DDR, conflict networks, and state-building.

Keywords: Timor-Leste
veterans
Post-conflict transitions
pensions
reintegration
Advisor: Caplan, R
Formal principles in the music of Brahms

Part 1 of the succeeding work deals with aspects of form which are neither binary nor ternary In basis, and concerns Itself with the addition of sections of music which are either disparate or basically alike. Multi-movement works in instrumental music have certain conventions with regard to the number of movements and with regard to the sequences in these movements of speeds, tonalities and forms. Pressures for unity within such basically discrete works may manifest themselves by thematic quotation, thematic metamorphosis or motific similarities between movements. Slow introductions are necessarily harmonically wayward and are mostly thematically connected with the subsequent part of the movement... (see thesis for the rest of the abstract)
The Human Rights Act, asylum, and the campaign against Section 55

A major objective of the Human Rights Act (HRA) was to bring about a culture of rights in the UK. Its introduction fore-grounded questions about the use of rights to advance social justice issues and was the impetus for this research. At about the same as the Act came into effect another law, Section 55, an antithesis of what the HRA promised, was passed which forced thousands of asylum-seekers into destitution. Section 55 became a major battleground pitting non-governmental organisations (NGOs) against the Home Office in a three-year long campaign, characterised by rancour and viciousness, unlike any in recent memory. The NGOs, with the new HRA as a key part of their strategy, defeated the legislation. This thesis, a bottom-up case study of rights at work, examines the role of rights in the campaign to assess (1) if rights brought about social changes and (2) is a culture of rights developing in the UK? The paper first considers the various theoretical frameworks on rights and social change and analyses various case studies of rights at work. Context is important; therefore, it also examines how asylum has come to be framed in present-day discourse, with an overview on the evolution of welfare as a coercive measure. The study, framed against current events of the day, concludes that while test-case challenges eventually defeated Section 55 welfare as a coercive measure continues. In short, the HRA has proven to be ineffective against illiberal policies and the development of a culture of rights, insofar as asylum is concerned, has stalled. And it has happened with deliberation by a government determined to be tough on asylum irrespective of the HRA.

Keywords: civil society
social justice
human rights
asylum
law
Advisor: Galligan, D
Charge transport in disordered semiconductors in solid state sensitized solar cells: influence on performance and stability

This thesis studies parameters influencing both the performance and stability of solid state sensitized solar cells (ssSSCs). ssSSCs benefit from their low materials and manufacturing processing costs, a consequence of using solution processed materials. However, solution processed materials are often structurally and electronically disordered. By characterizing fully operational ssSSCs and their charge transport properties, this thesis elucidates the factors limiting charge transport and proposes routes towards both improved photovoltaic conversion efficiency and long-term stability.
Chapter 2 provides an explanation of the operation of ssSSCs, while Chapter 3 discusses the basic methods used in this thesis. Having set this background, Chapter 4 explores the interaction between atmospheric oxygen and charge doping mechanisms in the organic semiconductors used in ssSSCs. To understand the implications of the findings presented in Chapter 4, a new technique, “transient mobility spectroscopy”, was developed to understand the evolution of balanced charge transport behaviour of disordered semiconductors at different operating conditions in ssSSCs. This technique is presented in full in Chapter 5.
The understanding gained in Chapters 4 and 5 suggest that alternative light absorbers with higher extinction coefficients may be beneficial to improving the performance of ssSSCs. Chapter 6 discusses the use of an organometal trihalide perovskite, as light absorber in ssSSCs. Using time resolved techniques, the charge transport and recombination mechanisms in various device architectures are explored, allowing suggestions to be made towards future improvements.
Chapter 7 uses the technique presented in Chapter 5 to understand a rapid degradation mechanism of working ssSSCs. Particular focus is placed on the titanium dioxide charge-transporting layer. Building on this newfound understanding, two methods for attaining stable photovoltaic performance are provided, a great step forward for this technology.

Keywords: charge transport
perovskite solar cells
dye sensitized solar cells
Advisor: Snaith, H
Francis Jeffrey, Samuel Taylor Coleridge's Biographia literaria, and contemporary criticism of William Wordsworth

The thesis examines Coleridge's criticism of Wordsworth in the Biographia Literaria in the context of the contemporary review reaction to Wordsworth's poetry and theory of poetic diction, concentrating throughout on Wordsworth's most representative and persistent critic, Francis Jeffrey.
The thesis is divided into two sections, according to a distinction laid down in the opening pages of the Biographia. The first examines "the long continued controversy concerning the true nature of poetic diction", the second, "the real poetic character" of William Wordsworth.
The first section, on "The Language of Poetry", opens with a discussion of the explicit and implicit aspirations of the Preface to the Lyrical Ballads, relating them to the theory of mind and nature in Wordsworth's poetry, and to Wordsworth's poetic practice. Chapter Two discusses Coleridge's reading of the Preface, its misrepresentation of the Preface's basic assumptions, and the extent to which Coleridge assimilates many of the arguments of the contemporary reviewers, only to move beyond them.
The second section, "The Poet, the People, and the Public", concentrates more closely on the criticism of Francis Jeffrey. Chapter Three deals, briefly, with the prejudices of Jeffrey's criticism - with the Edinburgh Review as an historical enterprise - and then, at length, with the principles of his criticism as revealed in his review of Archibald Alison's Essays on the Nature and Principles of Taste and his reviews of other aesthetic, ethical, and philosophical writings. After establishing the critical ambiguity of Jeffrey's associationist aesthetic, Chapter Four moves to a comparison of Jeffrey's and Coleridge's criticism of Wordsworth, treating their similarities and differences on the subject of poetic sensibility and poetic genius. The final chapter, Chapter Five, looks at the social and political implications of Jeffrey's rejection of Wordsworth, interpreting that rejection as prophesying and enforcing the isolation of the poet from the public.
Throughout, Coleridge's Biographia Literaria is seen as a coherent response to the contemporary reviewers generally, and, more specifically, to Francis Jeffrey's criticism of William Wordsworth.
The political economy of natural gas producer cooperation: cartelisation and market power

In 2001 the Gas Exporting Countries Forum (GECF) was created by some of the world’s leading natural gas producing and exporting countries in order to promote their mutual interests through cooperation, in particular with regard to extracting the maximum value from their natural gas exports.
My core research question is: Does cooperation among GECF member countries explain those exporters’ market power in highly import-dependent natural gas consuming countries? To determine the influence of the GECF’s cooperative actions and policies, I study the GECF’s cooperative behaviour and measure the role of (collusive) producer conduct in terms of its contribution to achieving the main GECF objective: attaining gas prices that are measurably above the cost of production and hence help producers earn significant economic rents. I employ a variety of methods from the international relations literature on cooperation and cartelisation, collective action theory and an economic measurement model in three case studies.
I find that cooperation among GECF members partly explains their market power in a number of import-dependent gas markets. This is so despite the GECF’s weak degree of institutionalisation. The reasons for the GECF’s influence on effective cooperative results are: first, conducive structural conditions in many gas importing markets favouring cartelisation; second, GECF members use methods such as artificial market entry barriers (e.g. long-term term contracts negotiated in a non-transparent way) to secure their market power and third, the GECF faces less severe internal procedural challenges that plague other cartels such as collective action problems, especially cheating.
Cooperation among GECF exporters hence contributes to high(er) prices of natural gas. This causes economic inefficiencies and a transfer of wealth—and political power—from gas consumers to producers. It also hinders climate change mitigation as cleanerburning gas remains too expensive to replace ‘dirty’ coal in power generation.

Keywords: natural gas
natural gas prices
producer conduct
cooperative behaviour
economic cooperation
collective action
LNG
artificial market entry barriers
economic rent
cartel
GECF
Advisor: MacFarlane, N
Translocal identities: an ethnographic account of the political economy of childhood transitions in northern Thailand

This thesis examines Karen childhood transitions in a context of expansion of the cash economy, formal education and modern institutions. Since the 1960s, Thai state development has had a significant impact on the organisation of work and learning among highland populations. Today, household economies largely depend on cash income and children aspire towards an adult life in which paid work is central. Formal education is highly valued as a means to reach this goal. Children often migrate for education to better-resourced locations and access scholarships provided by national and international institutions. On the basis of 12 months of ethnographic fieldwork undertaken between October 2007 and September 2009, the thesis seeks to understand the effects of globalisation on politically and economically marginalized children in northern Thailand through the lens of changing modes of production and learning. Findings indicate that children’s migration for education reflects broad political economic inequalities among Karen households as well as between them and mainstream Thai lowland populations. International dimensions of unequal relations are revealed in local peoples’ collective negotiations with Japanese and Catholic Christian NGOs. Although socio-cultural constructs like ‘gender’, ‘generation’, and ‘ethnicity�� shape Karen childhoods, this study found that their economic and political status are more fundamental in shaping all aspects of their social lives, including their socio-cultural identities. Childhood transitions emerge as multidimensional learning processes towards mastery of ‘translocal identities’, the skill to manage identities and relationships across multiple spaces and institutions. This is a culturally valued skill evidenced when minority children tactfully negotiate differing modes of compliance, resistance, and adaptation, especially in the domains of work and education. Thus, children participate in the moulding of local versions of the modern political economy of northern Thailand.

Keywords: transitions
migration
anthropology
Thailand
childhood
Advisor: Boyden, J
Essays on banking

This work consists of five separate essays that examine the banking industry from a number of viewpoints.
In the first essay, I consider how the ratchet effect interacts with workers' ability to cooperate to determine effort provision in teams. I show how the dominant constraint varies with both the size of the team and the members' ability to monitor each other's effort. Small teams tend to have their effort provision constrained by the ratchet effect; large teams are instead constrained by the inability of the team members to demand effort from each other.
In the second essay, I examine the phenomenon of large team transfers in professional service firms, especially investment banks. I argue that large team moves occur because employees benefit by working with the most talented coworkers. Above-average teams may move together to effectively exclude younger, less-talented workers. These team transfers are optimal when employees are remunerated with team-based bonuses, which may explain their significance in investment banking.
In the third essay, I consider the securitization market. First, I provide an explanation for equilibrium credit ratings inflation that does not require investor irrationality. Second, I argue that moral hazard in securitization results in banks either selling the entirety of securitized products, or none at all. Finally, I consider a number of possible government interventions in the market and conclude that many proposed interventions are either ineffectual or counterproductive.
In the fourth essay, we design an improved LIBOR reporting mechanism. This mechanism, which we name the "whistleblower mechanism," uses the revealed preference of other banks to determine the borrowing rate of a given bank. Truthful reporting is the sole equilibrium of the mechanism that we design; the mechanism is budget-balanced.
In the fifth essay, we consider the analogy between systemic risk and pollution. We argue that an ex post tax cannot replicate capital regulation because of a 'polluter cannot pay' problem. Secondly, we show an equivalency result between ex ante taxation and capital regulation. We then show that unless the ex ante tax is levied in capital, however, it may perversely increase the amount of debt in the financial system. We argue for further capital regulation.

Keywords: banking
economics
finance
banking regulation
Advisor: Morrison, A
Shapiro, J
Clefts, relatives, and language dynamics: the case of Japanese

The goal of this thesis is to develop a grammar model of Japanese within the framework of Dynamic Syntax (Cann et al. 2005, Kempson et al. 2001), with special reference to constructions that involve the nominaliser no: clefts and certain kinds of relatives. The more general theoretical position which it aims to defend is that an account of these constructions in terms of ‘language dynamics’ is preferable to other ‘static’ approaches currently available. What is here meant by ‘language dynamics,’ in a nutshell, is the time-linear processing of a string and attendant growth of an interpretation.
First, I shall motivate, and articulate, an integrated account of the two types of no- nominalisation. These two classes are uniformly modelled as an outcome of incremental semantic-tree growth. The analysis is corroborated by naturally-occurring data extracted from the Corpus of Spontaneous Japanese (CSJ). Moreover, novel data with regard to coordination are accounted for without losing uniformity.
Second, the composite entry of no and the topic marker wa handles the two types of clefts uniformly. This account fits well with the CSJ findings. New data concerning case-marking of foci are explained in terms of whether an unfixed relation in a semantic tree is resolvable in incremental processing. The account also solves the island-puzzle without abandoning uniformity. As a further confirmation, the analysis is extendable to stripping/sluicing, making some novel predictions on case-marking patterns.
Third, the entry of no characterises free relatives and change relatives in a unitary manner. Furthermore, the composite entry of no and a case particle predicts a vast range of properties of head-internal relatives, including new data (e.g., negation in the relative clause, locality restriction on the Relevancy Condition).
In sum, the thesis presents a realistic, integrated, and empirically preferable model of Japanese. Some consequences stand out. The various new data reported are beneficial theory-neutrally. Formal aspects of Dynamic Syntax are advanced. The insights brought by a language dynamics account challenge the standard, static conception of grammar.

Keywords: relative clause constructions
cleft constructions
dynamic syntax
Japanese
nominalisations
Advisor: Kiaer, J
Cram, D
Antiviral mechanisms of small molecules targeting the endoplasmic reticulum and Golgi apparatus

N-linked glycosylation is the most common form of post-translational modification in nature and is essential to almost all enveloped viruses, including members of the Flaviviridae family. The host cell N-linked glycoprotein processing pathway is utilised by these viruses and as such has long been identified as a potential target for the development of antiviral drugs. Here, the antiviral mechanisms of three classes of small molecules targeting the secretory pathway and altering viral envelope glycosylation are investigated, using the HCV surrogate model, BVDV. The antiviral activity of imino sugars, principally through α-glucosidase inhibition, is well-characterised and here, a group of novel adamantyl coupled imino sugars are investigated and demonstrated to inhibit ER α glucosidases, which correlates with their antiviral activity against BVDV. Additionally, BVDV is used to study the antiviral mechanism of action of nitazoxanide. Nitazoxanide, the parent compound of the thiazolide class of structures, is a broadly antimicrobial compound with antiviral activity against HBV, HCV, influenza, JEV and others. Here, nitazoxanide is shown to be antiviral against BVDV by inducing Ca2+ release from ATP-sensitive intracellular calcium stores, disrupting ER-Golgi trafficking and inhibiting complex glycan formation. Finally, the potential of Golgi endo-α-mannosidase as an antiviral target is explored, using the endomannosidase inhibitor glucose-isofagomine in conjunction with the imino sugar α-glucosidase inhibitor NAP-DNJ. Endomannosidase is shown to be a valid antiviral target for BVDV, both alone and in combination with α-glucosidase inhibition, and is utilised by viral glycoproteins to acquire complex glycan structure, even in the absence of α-glucosidase inhibition. Altogether, this work furthers our understanding of the varied antiviral mechanisms of small molecules targeting the secretory pathway, enhancing the search for novel antiviral drugs directed against host cell machinery.

Keywords: Glycobiology
Antiviral mechanisms
Glycosidase Inhibitors
Biochemistry
Advisor: Wormald, M
Butters, T