Showing papers by "University of Westminster published in 2011"

Generational Differences in Work Values: A Review of Theory and Evidence

Abstract: This paper presents a critical review of the theoretical basis and empirical evidence for the popular practitioner idea that there are generational differences in work values. The concept of generations has a strong basis in sociological theory, but the academic empirical evidence for generational differences in work values is, at best, mixed. Many studies are unable to find the predicted differences in work values, and those that do often fail to distinguish between ‘generation’ and ‘age’ as possible drivers of such observed differences. In addition, the empirical literature is fraught with methodological limitations through the use of cross-sectional research designs in most studies, confusion about the definition of a generation as opposed to a cohort, and a lack of consideration for differences in national context, gender and ethnicity. Given the multitude of problems inherent in the evidence on generational differences in work values, it is not clear what value the notion of generations has for practitioners, and this may suggest that the concept be ignored. Ultimately, it may not matter to practitioners whether differences in the values of different birth cohorts reflect true generational effects, provided one can reliably demonstrate that these differences do exist. However, at present this is not the case, and therefore significant research is required first to disentangle cohort and generational effects from those caused by age or period. The suggestion that different groups of employees have different values and preferences, based on both age and other factors such as gender, remains a useful idea for managers; but a convincing case for consideration of generation as an additional distinguishing factor has yet to be made.

Reliability and Comparability of Psychosis Patients’ Retrospective Reports of Childhood Abuse

Abstract: An increasing number of studies are demonstrating an association between childhood abuse and psychosis. However, the majority of these rely on retrospective self-reports in adulthood that may be unduly influenced by current psychopathology. We therefore set out to explore the reliability and comparability of first-presentation psychosis patients’ reports of childhood abuse. Psychosis case subjects were drawn from the Aetiology and Ethnicity of Schizophrenia and Other Psychoses (AESOP) epidemiological study and completed the Childhood Experience of Care and Abuse Questionnaire to elicit abusive experiences that occurred prior to 16 years of age. High levels of concurrent validity were demonstrated with the Parental Bonding Instrument (antipathy: rs = 0.350–0.737, P < .001; neglect: rs = 0.688–0.715, P < .001), and good convergent validity was shown with clinical case notes (sexual abuse: κ = 0.526, P < .001; physical abuse: κ = 0.394, P < .001). Psychosis patients’ reports were also reasonably stable over a 7-year period (sexual abuse: κ = 0.590, P < .01; physical abuse: κ = 0.634, P < .001; antipathy: κ = 0.492, P < .01; neglect: κ = 0.432, P < .05). Additionally, their reports of childhood abuse were not associated with current severity of psychotic symptoms (sexual abuse: U = 1768.5, P = .998; physical abuse: U = 2167.5, P = .815; antipathy: U = 2216.5, P = .988; neglect: U = 1906.0, P = .835) or depressed mood (sexual abuse: χ2 = 0.634, P = .277; physical abuse: χ2 = 0.159, P = .419; antipathy: χ2 = 0.868, P = .229; neglect: χ2 = 0.639, P = .274). These findings provide justification for the use in future studies of retrospective reports of childhood abuse obtained from individuals with psychotic disorders.

Conspiracist ideation in Britain and Austria: Evidence of a monological belief system and associations between individual psychological differences and real-world and fictitious conspiracy theories

Abstract: Despite evidence of widespread belief in conspiracy theories, there remains a dearth of research on the individual difference correlates of conspiracist ideation. In two studies, we sought to overcome this limitation by examining correlations between conspiracist ideation and a range of individual psychological factors. In Study 1, 817 Britons indicated their agreement with conspiracist ideation concerning the July 7, 2005 (7/7), London bombings, and completed a battery of individual difference scales. Results showed that stronger belief in 7/7 conspiracy theories was predicted by stronger belief in other real-world conspiracy theories, greater exposure to conspiracist ideation, higher political cynicism, greater support for democratic principles, more negative attitudes to authority, lower self-esteem, and lower Agreeableness. In Study 2, 281 Austrians indicated their agreement with an entirely fictitious conspiracy theory and completed a battery of individual difference measures not examined in Study 1. Results showed that belief in the entirely fictitious conspiracy theory was significantly associated with stronger belief in other real-world conspiracy theories, stronger paranormal beliefs, and lower crystallized intelligence. These results are discussed in terms of the potential of identifying individual difference constellations among conspiracy theorists.

Medium chain length polyhydroxyalkanoates, promising new biomedical materials for the future

Abstract: Medium chain length polyhydroxyalkanoates, mcl-PHAs (C6–C14 carbon atoms), are polyesters of hydroxyalkanoates produced mainly by fluorescent Pseudomonads under unbalanced growth conditions. These mcl-PHAs which can be produced using renewable resources are biocompatible, biodegradable and thermoprocessable. They have low crystallinity, low glass transition temperature, low tensile strength and high elongation to break, making them elastomeric polymers. Mcl-PHAs and their copolymers are suitable for a range of biomedical applications where flexible biomaterials are required, such as heart valves and other cardiovascular applications as well as matrices for controlled drug delivery. Mcl-PHAs are more structurally diverse than short chain length PHAs and hence can be more readily tailored for specific applications. Composites have also been fabricated using mcl-PHAs and their copolymers, such as poly (3-hydroxyoctanoate) [P(3HO)] combined with single walled carbon nanotubes and poly(3-hydroxbutyrate-co-3-hydroxyhexanoate) [P(3HB-co-3HHx)] combined with hydroxyapatite. Because of these attractive properties of biodegradability, biocompatibility and tailorability, Mcl-PHAs and their composites are being increasingly used for biomedical applications. However, studies remain limited mainly to P(3HO) and the copolymer P(3HB-co-3HHx), which are the only mcl-PHAs available in large quantities. In this review we have consolidated current knowledge on the properties and biomedical applications of these elastomeric mcl-PHAs, their copolymers and their composites.

Antecedents of luxury brand purchase intention

Abstract: Purpose – There has been considerable research into the global phenomenon of luxury brand consumption, but relatively few studies have empirically explored key relationships influencing purchase intention. This research aims to consider the respective roles of social context, individual perception, and vanity, and to set these relationships within a broader theoretical context of the literature on possession and consumer identity. Design/methodology/approach – The empirical study consisted of a large-scale survey conducted among Chinese luxury brand consumers in Taiwan. The data were analyzed using exploratory factor analysis and multiple regression. Findings – The findings support the influence of the social context on purchase intention for luxury brands. There was weaker support for the role of perception. The experiential and functional aspects of luxury brand purchase were positively correlated with purchase intention, but symbolic value was not. Physical and achievement vanity had a positive impact on purchase intention while only achievement vanity had a moderating effect on perception. Practical implications – This study offers new empirical support for the proposition that vanity has a role in luxury brand purchase intention and thereby shades both theoretical and managerial understanding of luxury brand consumption. It also suggests that symbolic value, which is highly influential in western conceptualizations of luxury brand meaning, needs to be re-evaluated in the context of Chinese consumers. Originality/value – This study offers new empirical findings which contribute to a re-conceptualization of the antecedents of purchase intention in the area of luxury brand consumption. In particular, the study provides evidence of the roles of social context, perception and vanity in a Chinese consumption context to inform the primarily western models of luxury brand purchase intention.

Development of Transgenic Fungi That Kill Human Malaria Parasites in Mosquitoes

Abstract: Metarhizium anisopliae infects mosquitoes through the cuticle and proliferates in the hemolymph. To allow M. anisopliae to combat malaria in mosquitoes with advanced malaria infections, we produced recombinant strains expressing molecules that target sporozoites as they travel through the hemolymph to the salivary glands. Eleven days after a Plasmodium-infected blood meal, mosquitoes were treated with M. anisopliae expressing salivary gland and midgut peptide 1 (SM1), which blocks attachment of sporozoites to salivary glands; a single-chain antibody that agglutinates sporozoites; or scorpine, which is an antimicrobial toxin. These reduced sporozoite counts by 71%, 85%, and 90%, respectively. M. anisopliae expressing scorpine and an [SM1]8:scorpine fusion protein reduced sporozoite counts by 98%, suggesting that Metarhizium-mediated inhibition of Plasmodium development could be a powerful weapon for combating malaria.

Qualitative research in nutrition and dietetics: data collection issues.

Abstract: The wide scope of qualitative enquiry presents the researcher with a number of choices regarding data collection and sampling. Selecting data collection and sampling techniques can therefore be somewhat daunting, particularly because, often, there is no single, universally accepted 'correct' option. Appropriate research methods are, however, crucial to ensure high-quality research. This review, the second in the series, provides an overview of the principal techniques of data collection and sampling that may be used for qualitative research in nutrition and dietetics. In addition, it describes a process for choosing appropriate data collection and sampling methods that considers the extent to which they provide data that answers the research question(s) and are compatible with the philosophical assumptions about ontology, epistemology and methodology that underpin the overall design of a study. Finally, it discusses the central role that the researcher plays in qualitative data collection and encourages researchers to acknowledge and reflect upon their impact on the data. Other reviews in this series provide a model for embarking on a qualitative research project in nutrition and dietetics, an overview of the principal techniques of data analysis and quality assessment of this kind of research, and some practical advice relevant to nutrition and dietetics, along with glossaries of key terms.

Sugar-Sweetened Beverage, Sugar Intake of Individuals, and Their Blood Pressure: International Study of Macro/Micronutrients and Blood Pressure

Abstract: The obesity epidemic has focused attention on relationships of sugars and sugar-sweetened beverages (SSBs) to cardiovascular risk factors. Here we report cross-sectional associations of SSBs, diet beverages, and sugars with blood pressure (BP) for United Kingdom and US participants of the International Study of Macro/Micronutrients and Blood Pressure. Data collected include four 24-hour dietary recalls, two 24-hour urine collections, 8 BP readings, and questionnaire data for 2696 people ages 40 to 59 years of age from 10 US/United Kingdom population samples. Associations of SSBs, diet beverages, and sugars (fructose, glucose, and sucrose) with BP were assessed by multiple linear regression. SSB intake related directly to BP, with P values of 0.005 to <0.001 (systolic BP) and 0.14 to <0.001 (diastolic BP). SSB intake higher by 1 serving per day (355 mL/24 hours) was associated with systolic/diastolic BP differences of +1.6/+0.8 mm Hg (both P<0.001) and +1.1/+0.4 mm Hg (P<0.001/<0.05) with adjustment for weight and height. Diet beverage intake was inversely associated with BP (P 0.41 to 0.003). Fructose- and glucose-BP associations were direct, with significant sugar-sodium interactions: for individuals with above-median 24-hour urinary sodium excretion, fructose intake higher by 2 SD (5.6% kcal) was associated with systolic/diastolic BP differences of +3.4/+2.2 mm Hg (both P<0.001) and +2.5/+1.7 mm Hg (both P=0.002) with adjustment for weight and height. Observed independent, direct associations of SSB intake and BP are consistent with recent trial data. These findings, plus adverse nutrient intakes among SSB consumers, and greater sugar-BP differences for persons with higher sodium excretion lend support to recommendations that intake of SSBs, sugars, and salt be substantially reduced.

Evaluating the use of an urban consolidation centre and electric vehicles in central London

Abstract: The paper focuses on the role that can be played by urban consolidation centres (UCCs) in reducing freight traffic and its environmental impacts in towns and cities. It is based on the before and after evaluation of a trial led by a major stationery and office supplies company in which urban freight deliveries in central London made from a depot in the suburbs using diesel vehicles were replaced with the use of an urban micro-consolidation centre located in the delivery area together with the use of electrically-assisted cargo tricycles and electric vans. The results show that the total distance travelled and the CO2eq emissions per parcel delivered fell by 20% and 54% respectively as a result of this delivery system. However, the evaluation has also indicated that the distance travelled per parcel rose substantially in the City of London delivery area as a result of the electric vehicles having far smaller load limits in both weight and volume compared with diesel vans. But, at the same time, the trial system was able to virtually eliminate CO2eq emissions per parcel delivered in the City of London. The trial proved successful from the company's perspective in transport, environmental and financial terms. The company therefore decided to continue the operation beyond the end of the trial with it being officially launched during 2010.

European airline delay cost reference values

Abstract: The objective of this report is to provide users with updated reference values for the cost of delay to European airlines. It updates previous reporting (appended herewith) based on 2010 as the reference year. This new report presents costs for the reference year 2014 and extends the range of aircraft covered from 12 to 15, generated by a fully updated version of the model.

Flour and breads and their fortification in health and disease prevention

Abstract: Bread and flour-based foods are an important part of the diet for millions of people worldwide. Their complex nature provides energy, protein, minerals and many other macro- and micronutrients. However, consideration must be taken of three major aspects related to flour and bread. The first is that not all cultures consume bread made from wheat flour. There are literally dozens of flour types, each with their distinctive heritage, cultural roles and nutritive contents. Second, not all flours are used to make leavened bread in the traditional (i.e., Western) loaf form. There are many different ways that flours are used in the production of staple foods. Third, flour and breads provide a suitable means for fortification: either to add components that are removed in the milling and purification process or to add components that will increase palatability or promote health and reduce disease per se. Flour and Breads and their Fortification in Health and Disease Prevention provides a single-volume reference to the healthful benefits of a variety of flours and flour products, and guides the reader in identifying options and opportunities for improving health through flour and fortified flour products. Examines those flour and bread related agents that affect metabolism and other health-related conditions. Explores the impact of compositional differences between flours, including differences based on country of origin and processing technique. Includes methods for analysis of flours and bread-related compounds in other foods.

A twenty-first century assessment of values across the global workforce

Abstract: This article provides current Schwartz Values Survey (SVS) data from samples of business managers and professionals across 50 societies that are culturally and socioeconomically diverse. We report the society scores for SVS values dimensions for both individual- and societal-level analyses. At the individual-level, we report on the ten circumplex values sub-dimensions and two sets of values dimensions (collectivism and individualism; openness to change, conservation, self-enhancement, and self-transcendence). At the societal-level, we report on the values dimensions of embeddedness, hierarchy, mastery, affective autonomy, intellectual autonomy, egalitarianism, and harmony. For each society, we report the Cronbach’s α statistics for each values dimension scale to assess their internal consistency (reliability) as well as report interrater agreement (IRA) analyses to assess the acceptability of using aggregated individual level values scores to represent country values. We also examined whether societal development level is related to systematic variation in the measurement and importance of values. Thus, the contributions of our evaluation of the SVS values dimensions are two-fold. First, we identify the SVS dimensions that have cross-culturally internally reliable structures and within-society agreement for business professionals. Second, we report the society cultural values scores developed from the twenty-first century data that can be used as macro-level predictors in multilevel and single-level international business research.

Social enterprise and social entrepreneurship research and theory: a bibliometric analysis

Abstract: Purpose – The purpose of this paper is to present a detailed analysis of the social enterprises (SE) and social entrepreneurship (SEship) literature that has been published in international journals from 1991 to 2010, determining the intellectual structure of both fields and their maturity as academic fields of study. Design/methodology/approach – Using a quantitative methodology for literature study, named bibliometric analysis, relevant papers were obtained from three important international databases, and SE and SEship journals. An initial number of 1,343 records were identified and, after applying various filters, a total of 286 papers were studied for bibliometric indicators and epistemological orientation. Findings – The study identified a significant increase in the scholarly investigation of SE and SEship in recent years, together with greater collaboration and international research. It was demonstrated that some countries are dominating the SE and SEship research area, such as the UK and the USA, whereas institutional and individual research output is spread more equally. Currently, no author or institution dominates the SE and SEship literature. The epistemological orientation suggests that the published literature is largely of a theoretical and descriptive nature in both fields, with only a small number of predictive papers. Originality/value – This paper provides important contributions. First, it presents an intellectual structure of SE and SEship as a discipline. Second, it determines the current maturity of the field based on its epistemological orientation, concluding that SE and SEship are maturing, with theory development followed by empirical testing and validation generating an increase in consensus on the boundaries of the field.

An Introduction to Communities of Practice

Abstract: This article looks at the concept of communities of practice (CoPs) in the workplace. The theories surrounding these types of communities are still very new and in the process of development. The practice and the importance of these communities for knowledge transfer are also still to be explored as to the best methods for establishing such communities and how to support and encourage them but we show ideas for potential in our discussion. Below we discuss the background and main threads of theory that are under development. This is very much a short introduction to the concept. Further discussions can be found in Coakes (2004), Coakes and Clarke (2005), and Lehaney, Clarke, Coakes, and Jack (2003).

Understanding how men experience, express and cope with mental distress: where next?

Abstract: In line with the shift towards prioritising lay accounts and narratives of chronic illness in sociology, there is an emerging literature on men, their subjectivities and experiences of mental distress. We argue in this paper that subjectivities and distress among men are an important area for critical sociological research. Very little is known about men's subjectivities or the meanings they give to - and how they cope with or seek help for - distress. At the same time, current theories of gender relations, performativity and wellbeing as they pertain to men are likely to shed further light on subjectivity and distress. However, current theories (and qualitative research involving men and women) are pointing to considerable complexity. In this paper, we outline what is known about distress and men, and consider the utility of gender relations, performativity, subjectivities and wellbeing for a better understanding of distress. We also ask: What other factors influence distress, and how should these be considered in relation to men and masculinities? What are the implications for research and policy?

Daylighting: Architecture and Lighting Design

Abstract: Acknowledgements How to use this book 1. Criteria of good daylighting 2. What light does 3. The daylight climate 4. Daylight and the form of buildings 5. Energy and control 6. Standards, design guidance and development control 7. Daylight factors 8. Daylight illuminance 9. Collecting daylight: windows, light pipes and other devices 10. Daylight coefficients and numerical models 11. Notes and References Worksheets Algorithms and equations Index

Isolation of fluoroquinolone-resistant O25b:H4-ST131 Escherichia coli with CTX-M-14 extended-spectrum β-lactamase from UK river water

Abstract: Objectives We analysed water sampled from the River Thames in London for Escherichia coli resistant to oxyimino-cephalosporins and/or fluoroquinolones, particularly seeking isolates with CTX-M extended-spectrum s-lactamases (ESBLs) and members of the clinically important O25b:H4-ST131 lineage. Methods River water was collected from three urban sites on the River Thames by the City of London Port Health Authority on two occasions 1 week apart. Coliforms and E. coli were identified by the Quanti-Tray™ method. Disc susceptibility tests were performed and MICs were determined for E. coli isolates resistant to either ciprofloxacin or cefpodoxime and genetic relatedness was determined by PFGE and real-time PCR. PCR was used for phylogenetic and plasmid typing, to detect antibiotic resistance genes and to detect ISEcp1 upstream of blaCTX-M genes. blaCTX-M alleles were identified by sequencing. Results The mean E. coli count, as the most probable number, from the first river samples, taken on a falling tide on 23 March 2010, was 4.7?×?104/100 mL and 30 ciprofloxacin-resistant colonies were isolated. Twenty of the 30 colonies belonged to clone ST131; 10 of these had blaCTX-M-14 whereas the remaining 10 lacked ESBLs. The ST131 isolates represented two different PFGE types. No ciprofloxacin- or cefpodoxime-resistant E. coli were isolated from the second river sample taken at low tide. CTX-M-15, the most common ESBL in clinical E. coli, was not detected in the river samples. Conclusions Water from the River Thames in West London is contaminated, perhaps transiently, with antibiotic-resistant E. coli belonging to the clinically important O25b:H4-ST131 lineage.

Reservoir operating rules to sustain environmental flows in regulated rivers

Abstract: Sustainable water resource developments require reservoir operations that provide environmental flows (e-flows) to support the downstream riverine ecosystem by minimizing the degree of hydrologic alteration under given water supply constraints. The effective management of e-flows below dams was explored by combining three e-flow management strategies for “normal,” wet, and dry year situations, delivering a range of e-flow regimes for different reservoir storage levels and different natural flow (reservoir inflow) conditions. We combined these into a single combined e-flow strategy and coupled this with reservoir operating rule curves to form a reservoir operating approach that optimized e-flow provision under given water supply constraints. We also explored constraints imposed by the dam's valve release capacity. To investigate the capability of the approach to minimize the degree of hydrologic alteration downstream from a reservoir, we presented a case study of the Tanghe Reservoir in China's Tang river basin. The approach triggered a preferred e-flow strategy when the reservoir water level was high to better maintain the ecological functions within downstream riverine ecosystems, a basic e-flow strategy when the water level was low to reduce the water supply risk, and an acceptable strategy under intermediate conditions. The approach effectively balanced human and ecosystem needs and demonstrated the minimum levels of flow regime alteration achievable within the regulated river.

Mobile Augmented Reality for Cultural Heritage

Abstract: This paper introduces an approach of using mobile Augmented Reality (mobile-AR) in cultural organisations, such as museums and archaeological sites, for information provision and enhancing the visiting experience. We demonstrate our approach by presenting a mobile-AR educational game for iPhones that has been developed for the archaeological site and the exhibition area at Sutton Hoo. This pilot aids visitors’ understanding of the site and its history via an engaging and playful game that connects the site with the British Museum where the objects that have been excavated from the site are exhibited. The paper discusses stakeholders’ requirements, the system architecture and concludes with lessons learned and future work.

The Acceptance of Cosmetic Surgery Scale: initial examination of its factor structure and correlates among Brazilian adults.

Abstract: The present study conducted a preliminary examination of the psychometric properties of a recently developed Portuguese translation of the Acceptance of Cosmetic Surgery Scale (ACSS; Henderson-King & Henderson-King, 2005). A total of 311 Brazilian adults completed the ACSS along with Portuguese translations of measures of actual–ideal body weight discrepancy, body appreciation, sociocultural attitudes toward appearance, and demographics. Results showed that the Portuguese ACSS reduced to a three-factor solution consisting of the Intrapersonal, Social, and Consider factors uncovered in the original work using the ACSS. Moreover, there were only small sex differences on these subscales. In addition, the Portuguese ACSS showed a good pattern of convergent validity. The availability of the Portuguese ACSS is expected to stimulate more in-depth, quantitative research on attitudes toward cosmetic surgery within the Brazilian context.

What is social tourism

Abstract: This article examines the definitions and implementations of the concept of ‘social tourism’ that are in use in Europe today. Examples show that the concept has been implemented in many different ways to suit national contexts and that the justifications and goals of social tourism can differ greatly. The question arises how one can define the boundaries of this versatile and complex concept. This article proposes a model to clarify the interrelationships between the different interpretations: it highlights where common ground exists, but also where contradictions are apparent. The model consists of four main categories: the participation model, the inclusion model, the adaptation model and the stimulation model. The model draws on the historical development of social tourism and the ethical foundations for provision, and it is supported by a range of examples of European practice. Through this sub-categorisation of the concept, it is argued that a ‘scientification’ of the concept of social tourism can take place, so that the term does not lose its academic and political value. This article concludes by proposing a definition for social tourism that can effectively set the concept apart from other forms of tourism with attached social benefits.