VictorJuiz/thesis huggingface dataset:
Towards understanding Internet loyalty through customer preference structures
Keywords: on-line business
e-commerce
e-business
loyalty
Internet
consumer behaviour
retailing
structural equation modeling
choice based conjoint
marketing
on-line retailing
preference structures

This research is an exploration of how the capabilities of the Internet may have influenced customer preference structures and how these influences may, in turn, have affected loyalty behaviours. These relationships are explored from both customers’ and companies’ perspectives.
A theoretical model is developed which comprises four main components. These are (1) pre-purchase preference structures; (2) post-purchase preference structures (3) the Internet channel and (4) loyalty behaviours. The Internet channel is shown as having a modifying effect on pre- and post-purchase preference structures, which in turn relate to influences in loyalty behaviours.
From the customer’s perspective the theoretical model was quantitatively tested by developing pre- and post-purchase preference structures from a choice-based conjoint experiment on a sample of online and offline grocery shoppers. The results showed that these preference structures differed significantly on a number of attributes. The theoretical model was further tested by linking the utility values from the choice-based conjoint experiment to loyalty variables in a structural equation model. The results showed that the theoretical model needed adjustment to fit the underlying data. The offline shoppers’ group model had a better fit to the data than did the online group.
The company perspective was developed through a longitudinal study of four U.K. companies in different industries. The qualitative data collected in these studies was compared and contrasted with the theoretical model. The emergent pattern within this analysis showed that companies with a strong understanding of customer preference structures in a traditional marketing channel, was no guarantee that the capabilities of the Internet would be used to strengthen performance on those preferences. One common theme that emerged from interviews with companies was that those who rapidly developed new levels of performance on customer preferences using the capabilities of the Internet had made the Internet a major component of their business model. The qualitative data showed companies as either adopting a transactional or an informational approach to their Internet channel strategy with radically different implications for their business models.
Macroeconomic policy in resource-rich economies
Keywords: oil
news shock
monetary policy
sovereign wealth funds
Natural resources
fiscal policy

This thesis considers how fiscal and monetary policy should be conducted in resourcerich economies. It consists of three papers addressing: whether governments should spend, save or invest volatile oil income; the assets they should save in; and how monetary policy should respond.
The first, “Eight principles for managing resource wealth”, shows that capital-scarce countries should save relatively less against oil price volatility, and invest more in domestic capital. They also should prepare for volatility in advance, and treat savings as a source of income rather than a temporary buffer. To show this the paper develops a framework that nests a variety of existing results, which are presented in eight principles.
The second, “The Elephant in the Ground: Oil extraction and asset allocation in sovereign wealth funds”, shows that governments should use sovereign wealth funds to offset oil price risk, extract oil faster if its price is pro-cyclical, and use precautionary savings to manage any residual volatility. To do this it combines three strands of literature for the first time: on continuous-time portfolio theory, oil extraction and precautionary savings.
The third, “Optimal monetary responses to oil discoveries”, addresses the anticipation effects around an oil discovery. It shows that the terms of trade will need to appreciate twice: once when oil is discovered and consumers anticipate future revenues; and again when the government begins spending the revenues. Oil wealth will give the monetary authority an incentive to appreciate the terms of trade, in addition to stabilising domestic inflation and the output gap. Optimal policy is well-approximated by a standard monetary rule that also responds to expected changes in the natural level of output.
English Romantic theatre during the Peninsular War
Keywords: political prints
theatre
national identity
Peninsular War
nineteenth century
Iberian Peninsula

Between 1808 and 1814 England was committed to an expensive and bloody campaign against the French invasion of the Iberian Peninsula. The Peninsular War, as it came to be known, was initially celebrated as a war of national independence that attracted widespread support. Soon after, it was characterised by political scandal and public controversy.
Literary scholars have devoted much attention to the political, social and cultural effects of the French Revolution, but have written surprisingly little about the later years of the campaign against Napoleonic France. The principle objective of this thesis is to offer the first in-depth study of English theatre during the Peninsular War. It considers the most popular plays in performance, and asks what their staging, publication, and reception history reveal about a nation’s literary tastes and its political self-awareness.
Sheridan’s Pizarro, a play about the Spanish conquest of Peru, was one of the most successful plays on the Romantic stage. A close analysis of this play considers its popularity between 1799 and 1815, and what it suggests about the flexibility of the contemporary repertoire system. Audiences’ ability to ascribe topical inflections to old plays helps explain the demand for Shakespeare and the bard’s political import to wartime audiences. This thesis explores the London patent stages and popular minor theatres, where programmes were restricted to song, dance, and spectacle. It also offers a case study of provincial theatre in Bristol, underscoring the significant limitations in assumptions that the metropolitan stage was representative of national trends.
Archival research on the London and Bristol stages has been crucial to this study, which is based on an examination of playbills, memoranda, letters, playtexts, and prints. The newsprint and cartoons discussed offer an important political and historical framework, suggestive of the cultural expectations likely to have influenced contemporary playgoers.
Taste, ethics and the market in Guatemalan coffee. An ethnographic study
Keywords: affect
STS
ethnography
quality
coffee
Guatemala
fair trade
ethical coffee
taste

For more than two decades there has been a growing niche for ethically sourced coffees, at the same time as a revitalisation and development of sourcing models focused on indicators of coffee quality and measures of taste. Small independent and multinational buyers and roasters have become progressively interested in sourcing coffee in a way that privileges sustainable and/or high quality indicators, and are increasingly engaged in debates about solidarity versus mainstreaming, quantity versus quality, and provider of caffeine versus taste. Research on one coffee producing country, Guatemala, suggests how these debates have affected the historical evolution of the coffee market. This ethnographic study traces the qualifications of Guatemalan coffee and argues that responses to both the enactment of the technologies, as well as the perceived limitations of sourcing models have produced new articulations of ethics and taste. Producers and small entrepreneurs located in Guatemala reconfigure the practices of cultivation, processing, and selling/buying in relation to circulating market indicators. They create locally situated attachments to the coffee through skill transfer and knowledge exchange and in this way they imitate and also transform international valuations of taste, ethics and quality. This thesis works to make visible the range and diversity of processes and agencies involved in the production of markets for ethical coffee and considers coffee as vital and mobile; an active producer of public effects rather than a passive object moved through a commodity network. This view enables a more open, relational and mobile account of both coffee and of ethics, one which is capable of making clear the important and emerging role of taste. This thesis extends the qualifications of coffee to the daily enactments of cultivation and the skills and techniques that work to reveal taste. On this view, taste mediates the agency of the materials in both high quality and sustainable coffees and this expands and extends ethics to interpersonal, material and bodily relations that link producers and consumers in multiple ways.
Constitutive modelling of composite materials under impact loading
Keywords: composites
impact
finite elements

In this thesis a constitutive model is developed for the numerical prediction of UD composite material behaviour under impact loading. Impact induced loading usually results in three dimensional stress states which significantly influences the failure behaviour. The heterogeneous nature of composite materials, in particular, results in a complex failure behaviour which manifests itself in various failure modes. Predicting the onset and evolution of these failure modes requires the use of physically based three dimensional theories for the prediction of the onset of damage and subsequent damage evolution. Furthermore, the use of polymeric matrices in continuous fibre reinforced composites results in a distinct directional strain rate dependent material behaviour which needs to be incorporated in constitutive models for the numerical simulation of impact events. The developed constitutive model relies on the prediction of the onset of damage evolution by the use of physically based three dimensional stress based failure criteria. A special feature of the proposed model is the identification of potential fracture planes. Numerically efficient algorithms for finding such planes are developed thus enabling the implementation into an explicit FE environment which was prohibitive so far. Damage evolution is simulated by degrading the tractions which are acting on the failure mode dependent fracture planes. The damage evolution and consequent energy dissipation is thereby driven by physically based dissipation potentials which consider only stresses which contribute to damage growth. The well known mesh dependent energy dissipation in Continuum Damage Mechanics is reduced by the introduction of an element size dependent parameter into the constitutive equations. An experimental program is conducted to investigate the compressive behaviour of composites. The focus of the study is on the rate dependent failure behaviour. The experiments are designed such that the failure mechanisms can be studied at varying strain rates with identical boundary conditions. This allows for direct conclusions about the strain rate dependent material behaviour. Novel optical measurement techniques are applied across all investigated strain rates thus ensuring an improved observation of the failure modes. The proposed constitutive model is finally verified by modelling of three point beam bending experiments which were performed quasi-statically and at impact velocities. The experimental technique for beam bending at impact loading was therefore improved thus yielding significantly more accurate experimental data.
Structure and function of bacterial proteins secreted by the type three secretion and twin arginine translocation pathways
Keywords: Protein Crystallography
Electron Paramagnetic Resonance
Bacterial secretion
Type Three Secretion
Twin Arginine Translocation

The Type Three Secretion Systems (T3SSs) of Gram-negative bacteria, including Shigella, Salmonella, and Enteropathogenic/Enterohaemorrhagic Escherichia coli (EPEC/EHEC), pass virulence factors directly into the host to mediate invasion. Prior to secretion down the narrow T3SS channel, effector proteins associate with chaperone proteins. The binding enables the T3SS to keep effectors soluble and partially unfolded for secretion. In the first part of this thesis, the association of one promiscuous chaperone, Spa15 of Shigella flexneri, with three of its cognate effectors has been studied. In addition to the role this plays in secretion, the binding of one particular substrate leads to Spa15 being involved in the regulation of the T3SS. The oligomerisation and impact of substrate binding upon Spa15 has been determined by crystallography and EPR. Once secreted, T3SS effectors subvert the host cytoskeleton for the benefit of the bacteria. Soluble homologues of Spa15 effectors from EHEC and Salmonella have been purified, and their interactions with host GTPases which lead to stress fibre phenotypes observed.
The Twin Arginine Translocation (Tat) pathway provides a contrasting view of bacterial secretion. Instead of preventing folding in the cytoplasm, it is a criterion of transport that the protein be folded. One of the reasons for internal folding is the necessity to insert cofactors which could not be incorporated externally. In the second part of this thesis, a protein which exemplifies this necessity is studied. This is PhoD, the model protein for Tat export from Bacillus subtilis. PhoD is an alkaline phosphodiesterase expressed to scavenge phosphate in times of phosphate deficiency. The structure of PhoD has been solved, and the protein is shown to be able to cleave a component of its own cell wall. It uses an unusual catalytic site more reminiscent of the eukaryotic purple acid phosphatases than of other currently known alkaline phosphatases. Furthermore this site appears to require metal binding before export from the bacterial cytoplasm.
The ecology and conservation of the Adonis Blue (Polyommatus bellargus) and the Chalkhill Blue (Polyommatus coridon) butterflies in the UK
Keywords: Myrmecophily
Polyommatus coridon
Conservation
Habitat
Ecology
Population Genetics
Climate Change
Polyommatus bellargus

A combination of habitat loss, degradation and fragmentation are causing declines in butterfly species across Europe, with habitat specialists more vulnerable than generalists. The influence of climate change is serving to complicate matters, particularly at the edge of geographic ranges. Improving the quality of habitats is a key tool for the conservation of threatened species at both a local and landscape scale and this requires a thorough understanding of the ecology and habitat requirements of species. From this perspective this thesis examines and compares the ecology of two closely butterfly species, Polyommatus bellargus (the Adonis Blue) and Polyommatus coridon (the Chalkhill Blue) in southern England; calcareous grassland specialists, found in a highly fragmented ecosystem at the northern most edge of their geographic range.
Chapter 2 explores whether there has been an expansion in the larval niche of P. bellargus due to a warming climate in recent decades, and finds no indication of change once concurrent local habitat change has been accounted for. Chapter 3 examines the role that differences in microhabitat requirements play in differentiating the larval niche of P. bellargus and P. coridon, showing P. coridon has broader microhabitat requirements. Chapter 4 experimentally examines the specificity of mutualistic interactions between the larvae of each butterfly species with the ants Myrmica sabuleti and Lasius niger. Chapter 5 uses microsatellites to explore the genetic structure of both P. bellargus and P. coridon, showing (as predicted) that P. coridon has a less fragmented population structure than P. bellargus, but both species have high levels of inbreeding.
Control of typhoid fever: evaluating herd protection through public health use of typhoid VI polysaccharide vaccine
Keywords: Vaccine
Epidemiology
Typhoid fever

Typhoid fever remains an important public health problem globally. Cluster randomized effectiveness trials with typhoid Vi polysaccharide vaccine were conducted in Kolkata, India and Karachi, Pakistan, to provide evidence for vaccine introduction. While efficacy trials are limited to estimate vaccine's performance on the vaccine recipients, effectiveness trials consider the public health impact, notably the herd protection, or indirect effect, which can only be seen when vaccines are administered to groups rather than to individuals.
The observed total protection by the Vi polysaccharide vaccine in school-aged children was consistent in Kolkata and Karachi (61% and 56%, respectively), and was associated with minimal side-effects. The total protection in young children, however, was different (80% in Kolkata and no protection in Karachi). The Kolkata trial demonstrated significant herd protective effects, as demonstrated by indirect protection of non-vaccinees (45%), which was not shown in the Karachi trial. The difference in the effectiveness estimates between the trials may be due to the difference in study design and the population characteristics.
Immunogenicity studies were undertaken for randomly selected persons from both sites at pre-vaccination, 6 weeks, and 2 years post-vaccination. Serum Vi antibody titres (IgG) were measured through ELISA. At baseline, the GMTs were below the protective level for both sites. At six weeks after vaccination, though there is a significant increase in the GMTs in children from both site, the level of GMTs were significantly lower from those in Karachi (2,307.0 ELU vs. 1,189.1 ELU). GMT declined from 6 week to 2 year testing points for both sites but maintained the protective level.
These effectiveness trials gave a conclusive evidence of the protection conferred by the Vi polysaccharide vaccine in children older than 5 years of age. Targeted vaccination programme in high endemic areas, as stipulated in the WHO Position Paper, suggest the potential for effective control of typhoid fever in places like India and Pakistan with the school-based Vi vaccination.
Mnemonic functions in the macaque monkey: further insight into the role of the fornix
Keywords: behavioural neuroscience
learning
memory

The fornical tract, a major input-output pathway of the hippocampus, of the primate brain makes crucial contributions to visual memory, as effects after surgical or aetiological lesions of this tract are widely documented in the monkey and human literature. Here, a series of experiments sought to further elucidate the functions of this structure with a battery of novel tasks in macaque monkeys, conducted either on a touchscreen or in an ambulatory chamber, so as to offer a more global view of the mnemonic role accomplished by it. After receiving bilateral transection of the fornix, monkeys are impeded in the 'fast learning' phase of a large number of new visuospatial conditional problems, with major impairments seen in eliminating non-perseverative errors. These fornix transected monkeys are however facilitated in the initial acquisition of a visuovisual conditional task, with facilitation seen in their improved ability in eliminating perseverative errors. It is also demonstrated in an ambulatory apparatus, in comparison to control monkeys, these monkeys are impaired in the new learning of visuospatial context of environments, albeit still displaying intact locomotor and exploratory behaviour patterns. Contrary to the relatively clear role in new learning, the involvement of the fornix in memory retention over the very long-term is unknown. It is shown here that once some visuospatial information is learnt; the fornix is no longer implicated in the retention of the material. The effects of fornix transection are also found to be detrimental on a spatial recognition task, with impairments observed in acquisition of the more demanding stages of the task. The overall results covered in this thesis support previous work suggesting that the fornix mediates the new learning of visual information, and I further propose that this fornical involvement lies primarily in the learning of spatio-temporal contexts, particularly during 'fast learning', as well as in task-sets acquisition. I also argue for dissociation in the contributions of the fornix and hippocampus to some memory processes in the macaque.
Slavery in Early Mesopotamia from Late Uruk until the Fall of Babylon in the Longue Durée
Keywords: social status
flight
slavery

This dissertation looks at slavery in early Mesopotamia (ca. 3200-1595 BC) in the longue durée and establishes theoretical foundations for interpreting the data preserved in the extant sources. Rather than attempting to define slavery, the forms the social institution took from proto-history into the historical era of early Mesopotamia are contextualised, while identifying the broader social changes which might explain the non-linear evolution of the practice.
After considering the difficulty of defining the term ‘slave’ in relation to early Mesopotamia in general and numerous attempts to approach the problem, this work moves beyond definition, attempting to historicise slavery. To achieve this, slavery in early Mesopotamia is considered in the high points of the record in relation to key diagnostic features. The acquisition of slaves is studied alongside the release of slaves, demonstrating the numerous ways people in early Mesopotamia could be reduced to some form of bondage or slavery, while there remained relatively few means by which a person could experience upward movement out of slavery, opportunities which were reduced further for foreign and houseborn slaves.
The following discussion of the economics of slavery seeks to place the question in an historical context of modern scholarship before assessing the motivations, benefits, and risks of owning slaves in early Mesopotamia. After this chapter which looks at slavery from the perspectives of the elite, the subsequent chapter attempts to move beyond the elite bias of the documentation to understand history from the bottom, by studying flight and the related means of coercion. By considering the ways in which runaways were pursued and the risks members of the lower stratum community were willing to take for a change in status, the discussion presents a way forward to understanding slavery in early Mesopotamia. These diagnostic features of slavery reveal a traceable non-linear evolution of slavery in early Mesopotamia.