VictorJuiz/thesis huggingface dataset:
Chiral cation-directed asymmetric 5-endo-trig cyclizations
Keywords: catalysis
phase-transfer catalysis
asymmetric
cyclization
Baldwin's rules
indanes
organic chemistry

The primary objective of this research project was to develop a novel protocol for the synthesis of densely functionalized optically enriched indanes through a chiral cation directed 5-endo-trig ring closure. In chapter two, a convergent strategy for the construction of the cyclization precursors is reported, which employs two easily adapted fragments. In chapter three, a range of quaternary ammonium salts are screened to establish the optimal phase-transfer conditions for this system. A variety of substrates were evaluated to probe the scope and limitations of this methodology. Finally, two potential mechanistic pathways for this enigmatic process are outlined and discussed in chapter four.
Barriers to the consolidation of peace: the political economy of post-conflict violence in Indonesia
Keywords: civil war
riots
Southeast Asia
violence
mixed methods
political economy
state-building
Indonesia
conflict

What causes post-conflict violence to occur in some places emerging from extended violent conflict and not in others? Why does episodic post-conflict violence take different forms? And what causes episodic violence to escalate into larger renewed extended violence? This thesis contributes towards answers to these questions by examining the experience of Indonesia.
Six provinces saw civil war or large-scale inter-communal unrest around the turn of the century. In each, war ended. Yet levels and forms of post-conflict violence vary significantly between areas. The Indonesian cases are used to build a theory of the sources of spatial and temporal variance in post-conflict violence.
Multiple methods are employed. A new dataset, containing over 158,000 coded incidents, maps patterns of extended and post-conflict violence. Six districts in three provinces are then studied in depth. Comparative analysis of districts and provinces—drawing on over 300 field interviews—identifies the determinants of variations in post-conflict violence levels and forms.
Adopting a political economy approach, the thesis develops a novel actor-based theory of post-conflict violence. Violence is not the result of failed elite bargains, dysfunctional inter-group relations, enduring grievances, or weak states. Instead, it flows from the incentives that three sets of actors—local elites, local violence specialists, and national elites—have to use violence for accumulation. Violence is used when it is beneficial, non-costly, and when other opportunities for getting ahead do not exist. How post-conflict resources are deployed, the degree to which those who use violence face sanctions, and the availability of peaceful means to achieve goals shape incentives and hence patterns of violence. Where only violence specialists support violence, post-conflict violence will take small-scale forms. Where local elites also support violence, escalation to frequent large episodic violence occurs. Extended violence only occurs where national elites also have reason to use violence for purposes of accumulation.
Social explanations for ethnic differences in education
Keywords: education
UK
youth
contextual effects
children
ethnicity

This thesis investigates how variations in individual social contexts account for the existence of ethnic differences in educational outcomes. Four questions are answered. First, how are school ethnic and poverty compositions associated with ethnic differences in educational progress? Second, how are individual and school cohort level religious attitudes and behaviours associated with ethnic differences in the likelihood of aspiring to university? Third, how are parenting behaviours and closed parental networks at the individual and school cohort levels associated with ethnic differences in positive schoolwork attitudes and behaviours? Fourth, how are variations in the duration of residence in England and in additional language use, at the individual and school cohort levels, associated with ethnic differences in English language proficiency?
English data from wave 1 of the Children of Immigrants Longitudinal Survey in Four European Countries (CILS4EU) and from the National Pupil Database (NPD) matched to the Pupil Level Annual School Census (PLASC) are used to answer these questions. Both datasets are used to analyse outcomes for a sample of the school cohort that turned 14 in the academic year 2009/10.
The key findings are as follows. First, increases in school ethnic minority density are associated with increased progress; increases in school average poverty are associated with decreased progress. Second, individual level religiosity is positively associated with university aspirations, but cohort level religiosity has no association. Third, positive parenting behaviours are associated with improved schoolwork attitudes, whilst parental closure has positive effects at the individual level but not at the cohort level. Fourth, the duration of residence in England is a positive predictor of English language proficiency, whilst there is no effect of using an additional language. This thesis addresses a highly relevant social issue from a novel perspective, and has important implications for both policy and future research on this topic.
Continuity and change in international institutions: the case of the United Nations environment regime
Keywords: Brundtland commission
international institutions
global environmental governance
Stockholm conference
Rio earth summit

Analysts have had a long fascination with moments of significant change and discontinuity in political relations. Studies of “exogenous shocks,” “critical junctures,” “historical events,” “policy windows,” and “punctuated equilibria” have occupied a prominent place in qualitative assessments of policy and institutional change. Yet, despite analysts’ interest, these turning points remain poorly understood. Leading theoretical treatments are overwhelmingly descriptive, offering little in the way of explanatory capacity.
Introducing the concept of Temporal Focal Points, my thesis provides a temporal extension to Thomas C. Schelling’s focal point hypothesis. Temporal Focal Points—definite, exceptional phases along the temporal continuum—precipitate a convergence of expectations among actors in time that heightens the likelihood of agreement. Convergent expectations are a crucial means of overcoming temporal coordination problems among actors. By facilitating a spike in analytical activity, political entrepreneurship, and bargaining intensity, actors are able realize joint gains opened up by past shifts in key parameters. Prominent temporal signposts allow actors to recognize that existing institutional arrangements are not an equilibrium. I test the plausibility of this theory through an analysis of the record of change at four distinct phases of the history of the United Nations environment regime from 1962-1992, including the 1972 Stockholm conference, the 1982 Nairobi conference, the UN General Assembly’s response to the Brundtland report, and the 1992 Rio Earth Summit.
Search orders and Anton Piller relief: past, present, and future
Keywords: search order
Anton Piller order

The need to tackle infringement of intellectual property rights prompted judges to develop a remedy that allowed rightholders to enter the infringers’ premises for the purpose of retrieving and preserving evidence. This remedy was called the ‘Anton Piller’ order, after the first case that allowed it in a higher court. Very soon, this remedy became popular and started being used as a means to obtain evidence in many different types of proceedings outside of the scope of intellectual property (IP) and in other common law jurisdictions which followed the English practice. It then received a statutory form under the Civil Procedure Act 1997 and was renamed a ‘search order’ by CPR 25.1(1)(h). In general, such an order is available to an applicant who has a cause of action against another person in possession of vital evidence which substantiates the applicant’s cause of action, and there is good reason to assume that such evidence may be destroyed if the other person becomes aware of any legal action against him. Nevertheless, the order has been notoriously known for its oppressive nature, and was in fact characterised by Donaldson LJ in Bank Mellat v Nikpour as one of the law’s two nuclear weapons, the other one being the Mareva injunction. This thesis first discusses the basic features and origin of the Anton Piller jurisdiction. It then examines the conditions to be satisfied for a search order to be granted under the current legal framework in England and Wales, and asks whether these conditions are adequate for the protection of the parties. Emphasis is also given to the execution of a search order, which is another very controversial issue.
Utility and limitations of cardiac tissue slices for the study of cardiac electrophysiology 
Keywords: Cardiac Electrophysiology
Intracellular Calcium Transient
Cardiac Slices
Optical Mapping

Cardiac tissue slices, a rarely used pseudo two-dimensional preparation, have gained increasing popularity for applications such as drug testing over the last ten years as they combine ease of handling with patho-physiologically relevant cell-type representation, distribution and inter-connection.
The most well-established methods to measure electrophysiology in cardiac tissue are sharp electrodes and multi-electrode-arrays, techniques which are limited in spatial resolution or signal content. In this work, we have applied dual voltage Ca2+ optical mapping on cardiac slices, allowing us to record these two key parameters simultaneously at high spatio-temporal resolution, yielding better visualisation of conduction waves, spatial dispersion in action potential (AP) characteristics, and intracellular Ca2+ transient (CaT). The slice preparation method and the measurement protocols were refined to yield good reproducibility. Data analysis routines were developed to extract relevant parameters reliably.
Despite being a promising candidate for drug testing, little is known about how slice and intact whole-heart AP properties are interrelated, and how to scale-up from observations in two dimensions (2D) to the three dimensional (3D) heart. In this thesis, we present a method to compare directly AP properties of intact whole-heart and tissue slices, and show the extent to which slices preserve AP characteristics.
We have explored the suitability of tissue slices as an experimental model to study stretch induced changes in AP and CaT. During axial stretch, a dynamic profile of both AP and CaT was observed with an initial shortening of both AP and CaT duration, followed by a gradual recovery/prolongation.
We have also used tissue slices to study spatial heterogeneity of AP and CaT properties in the rabbit left ventricular free wall. A transmural gradient can be captured in CaT and AP (with the longest APD and CaT durations being captured in the subendocardium). No large AP prolongation was found in the mid-myocardium.
We conclude that the cardiac tissue slice preparation preserves some key functional parameters of the whole heart and is a promising model to study cardiac electrophysiology.
Absolute distance metrology using frequency swept lasers
Keywords: dimensional metrology
metrology
interferometry

This thesis describes and evaluates two new interferometric distance measurement methods based upon the well known method of Frequency Scanning Interferometry (FSI). These new methods are known as Dynamic FSI and Cascaded FSI.
Dynamic FSI addresses the two problems, commonly seen in previous FSI implementations, of not being able to measure a moving target and having a slow measurement rate. This method measures stationary and moving targets equally well, and can determine the distance to the target at all times during the measurement, in contrast to previous methods, which obtain only a single measured length from a measurement process which can take up to a second to make.
Cascaded FSI was developed with the aim of increasing the accuracy and precision of FSI. This method allows for measurements with precision equal to that of displacement interferometry, and also provides a way of measuring length relative to the frequencies of atomic absorption lines, which are inherently more stable length references than a physical length artefact.
Calculus of variations and its application to liquid crystals
Keywords: Modelling
Calculus
Cholesteric
Variations
Crystal
Bounded
Variation
Liquid

The thesis concerns the mathematical study of the calculus of variations and its application to liquid crystals.Throughout the thesis we will be looking to minimise integral functionals of the form
I(n) = ∫Ω F(x,n,∇n)dx.
In the first chapter we examine vectorial problems in the calculus of variations with an additional pointwise constraint so that any admissible function n ε W1,1(ΩM), and M is a manifold of suitable regularity. We formulate necessary and sufficient conditions for any given state n to be a strong or weak local minimiser of I. This is achieved using a nearest point projection mapping in order to use the more classical results which apply in the absence of a constraint. In the subsequent chapters we study various static continuum theories of liquid crystals. More specifically we look to explain a particular cholesteric fingerprint pattern observed by HP Labs. We begin in Chapter 2 by focusing on a specific cholesteric liquid crystal problem using the theory originally derived by Oseen and Frank. We find the global minimisers for general elastic constants amongst admissible functions which only depend on a single variable. Using the one-constant approximation for the Oseen-Frank free energy, we then show that these states are global minimisers of the three-dimensional problem if the pitch of the cholesteric liquid crystal is sufficiently long. Chapter 3 concerns the application of the results from the first chapter to the situations investigated in the second. The local stability of the one-dimensional states are quantified, analytically and numerically, and in doing so we unearth potential shortcomings of the classical Oseen-Frank theory.
In Chapter 4, we ascertain some equivalence results between the continuum theories of Oseen and Frank, Ericksen, and Landau and de Gennes. We do so by proving lifting results, building on the work of Ball and Zarnescu, which relate the regularity of line and vector fields. The results prove to be interesting as they show that for a director theory to respect the head to tail symmetry of the liquid crystal molecules, the appropriate function space for the director field is S BV2 (Ω,𝕊2). We take this idea and in the final chapter we propose a mathematical model of liquid crystals based upon the Oseen-Frank free energy but using special functions of bounded variation. We establish the existence of a minimiser, forms of the Euler-Lagrange equation, and find solutions of the Euler-Lagrange equation in some simple cases. Finally we use our proposed model to re-examine the same problems from Chapter 2. By doing so we extend the analysis we were able to achieve using Sobolev spaces and predict the existence of multi-dimensional minimisers consistent with the known experimental properties of high-chirality cholesteric liquid crystals.
Buying a balance: The 'individual-collective' and the commercial new age practices of yoga and Sufi dance
Keywords: practice
dance
Yoga
Sufi
commercialisation
collectivism
Spirituality
New Age
individualism
Sufism
commodification
Individual
Collective

The individual's experience of inner authority takes centre stage in the majority of scholarship on New Ageism, with many writers highlighting this theme as a defnitive characteristic of the spiritual culture. The aim of this thesis is to explore this topic and to ascertain the place of the individual and the collective within two commercial New Age feld sites in London. The qualitative data which lead this investigation were collected from a yoga centre called Shanti and a Suf dance organisation called the Suf Order. From this data, the thesis identifes an individual-collective dialectic, one which manifests in particular forms and with divergent orientations; the result is a multiplicity of types of individualisms which include collective forces. The study makes the case for this argument by focusing on four modes in which, at both sites, the individual and the collective co-produce each other. One, the (collective) class culture of the practitioners informs and is informed by the (individual) ideologies of self that the informants assert. Two, the (collective) capitalist context of the organisations infuence and are perpetuated by the ways the (individual) representatives of those organisations express themselves. Three, (collective) shared principles regarding 'positivity' and 'energy' enforce and are sustained by the (individual) feelings of the student. Four, the (collective) communities of practitioners depend on and contribute to the (individual) set apart status of the teacher. These four manifestations of the individual-collective dynamic appear with different orientations in each feld context; in all versions and in both settings, individual and collective are both present and mutually- constituting forces, but at Shanti the dialectics lean more towards the personal and at the Suf Order, the 'same' dialectics lean more towards the social. Each organisation refects and adds to the intersections, both in their forms and their orientations. In so doing, the two New Age centres present divergent balances of the individual-collective dynamic that correlate with the personal and social dispositions of their respective student bodies.
Control, ideology and identity in civil war: the Angolan Central Highlands 1965-2002
Keywords: MPLA
politics
Angola
civil war
UNITA
political identity
Africa

This thesis examines the relationship between political movements and people during the civil war between Angola’s MPLA government and the UNITA rebels in the Central Highlands region. It shows how conflicting ideas about political legitimacy originating in anticolonial struggle informed leaders’ decisions and formed the basis of their efforts to politicise people.
Much existing literature sees civil conflict in terms of rebellion against a state, motivated by grievance or by the desire for loot. I argue against such an approach in the Angolan case, since the MPLA and UNITA originated from different strands of nationalism, and neither achieved complete control over Angola’s territory and people. Instead, I draw on constructivist approaches to statehood in analysing the war as a contest in which both sides invoked ideas of the state in asserting their legitimacy.
The MPLA state controlled the cities while UNITA established rural bases and a bush capital, Jamba. Violence, often involving the capture of people, occurred at the margins of the areas of influence. Within each zone, each movement controlled public discourse to make its control hegemonic. Each presented itself as the authentic representative of the Angolan nation and condemned the other movement as the agent of foreign interests. These nationalist claims were given substance by processes of state building, more fully realised by the MPLA than by UNITA. Each movement’s claim to statehood served to legitimise its own violence while criminalising the violence of the other side.
Public dissent was prohibited in either zone, but people’s responses to politicisation ranged from genuine support, to co-operating only as necessary to avoid punishment, depending largely on their degree of involvement in the state building process. War itself was central to constituting perceptions of common interest, and political actors’ capacity to manipulate perceptions depended largely on military control.
The language of humour
Keywords: humour recognition
humour research
computational humour

Humour is one of the most interesting and puzzling aspects of human behaviour. Despite the attention it has received from fields such as philosophy, linguistics, and psychology, there have been only few attempts to create computational models for humour recognition and analysis. In this thesis, I use corpus-based approaches to formulate and test hypotheses concerned with the processing of verbal humour. The thesis makes two important contributions. First, it brings empirical evidence that computational approaches can be successfully applied to the task of humour recognition. Through experiments performed on very large data sets, I show that automatic classification techniques can be effectively used to distinguish between humorous and non-humorous texts, using content-based features or models of incongruity. Moreover, using a method for measuring feature saliency, I identify and validate several dominant word classes that can be used to characterize humorous text. Second, the thesis provides corpus-based support toward the validity of previously formulated linguistic theories, indicating that humour is primarily due to incongruity and humour-specific language. Experiments performed on collections of verbal humour show that both incongruity and content-based features can be successfully used to model humour, and that these features are even more effective when used in tandem.
Defining hunger, redefining food: humanitarianism in the twentieth century
Keywords: Food Aid
Humanitarianism
Hunger
Food
NGOs
History of Development
Emergencies
Anthropometry
Famine
Nutrition
Relief

This thesis concerns the history of humanitarian nutrition and its political implications. Drawing on aid agency archives and other historical sources, it examines how food has been delivered in emergencies, from the First World War to the present day. The approach is ethnographic: this is a study of the micro-level practices of relief, examining the objects distributed, the plans made, the techniques used. It is also historical: examining how such practices have changed over time.
This thesis makes five interlocking arguments. First, I make a political point: that humanitarian action is always political, and that it is impossible to adhere to ‘classical’ humanitarian principles such as neutrality, impartiality and independence. Second, I make a sociological argument: that the activities of humanitarian nutrition have been shaped by a number of themes, which include militarism, medicine, modernity, and markets. Third, I make a historical argument: that the main features of humanitarian nutrition were solidified between the 1930s and the 1970s, and were largely in place by the time of the Biafran war. Fourth, I make a sociological argument: that these mid-century changes involved a profound redefinition of hunger and food (with hunger conceived as a biochemical deficiency, and food as a collection of nutrients). Finally, I make a normative argument, suggesting that this redefinition has not necessarily benefited the starving: the provision of food in emergencies, I argue, is often concerned with control and efficiency rather than the suffering individuals themselves.