Showing papers by "Bournemouth University published in 2011"

Restoration of ecosystem services and biodiversity: conflicts and opportunities

Abstract: Ecological restoration is becoming regarded as a major strategy for increasing the provision of ecosystem services as well as reversing biodiversity losses. Here, we show that restoration projects can be effective in enhancing both, but that conflicts can arise, especially if single services are targeted in isolation. Furthermore, recovery of biodiversity and services can be slow and incomplete. Despite this uncertainty, new methods of ecosystem service valuation are suggesting that the economic benefits of restoration can outweigh costs. Payment for Ecosystem Service schemes could therefore provide incentives for restoration, but require development to ensure biodiversity and multiple services are enhanced and the needs of different stakeholders are met. Such approaches must be implemented widely if new global restoration targets are to be achieved.

An Exploratory Study into the Factors Impeding Ethical Consumption

Abstract: Although consumers are increasingly engaged with ethical factors when forming opinions about products and making purchase decisions, recent studies have highlighted significant differences between consumers’ intentions to consume ethically, and their actual purchase behaviour. This article contributes to an understanding of this ‘Ethical Purchasing Gap’ through a review of existing literature, and the inductive analysis of focus group discussions. A model is suggested which includes exogenous variables such as moral maturity and age which have been well covered in the literature, together with further impeding factors identified from the focus group discussions. For some consumers, inertia in purchasing behaviour was such that the decision-making process was devoid of ethical considerations. Several consumers manifested their ethical views through post-purchase dissonance and retrospective feelings of guilt. Others displayed a reluctance to consume ethically due to personal constraints, a perceived negative impact on image or quality, or an outright negation of responsibility. Those who expressed a desire to consume ethically often seemed deterred by cynicism, which caused them to question the impact they, as an individual, could achieve. These findings enhance the understanding of ethical consumption decisions and provide a platform for future research in this area.

Ecological Impacts of Nonnative Freshwater Fishes

Abstract: There is a long history of introduction of non-native fishes in fresh waters and the introduction rate has accelerated greatly over time. Although not all introduced fishes have appreciable effects on their new ecosystems, many exert significant ecological, evolutionary, and economic impacts. For researchers, managers, and policy makers interested in conserving freshwater diversity, understanding the magnitude and array of potential impacts of non-native fish species is of utmost importance. The present study provides an illustrative conspectus of the most recent literature reporting ecological impacts of non-native freshwater fishes from a wide range of species and geographic locations and concludes with a prospectus of needed areas of scientific inquiry. Both directly and indirectly, invasive fishes affect a wide range of native organisms from zooplankton to mammals across multiple levels of biological organizations ranging from the genome to the ecosystem. Although a great deal of knowledge ha...

Crowding out intrinsic motivation in the public sector

Abstract: Employing intrinsically motivated individuals has been proposed as a means of improving public sector performance. In this article, we investigate whether intrinsic motivation affects the sorting of employees between the private and the public sectors, paying particular attention to whether extrinsic rewards crowd out intrinsic motivation. Using British longitudinal data, we find that individuals are attracted to the public sector by the intrinsic rather than the extrinsic rewards that the sector offers. We also find evidence supporting the intrinsic motivation crowding out hypothesis, in that, higher extrinsic rewards reduce the propensity of intrinsically motivated individuals to accept public sector employment. This is, however, only true for two segments of the UK public sector: the higher education sector and the National Health Service. Although our findings inform the literature on public service motivation, they also pose the question whether lower extrinsic rewards could increase the average quality of job matches in the public sector, thus improving performance without the need for high-powered incentives.

Microblogging, Constituency Service and Impression Management: UK MPs and the Use of Twitter

Abstract: Twitter, a microblogging site which allows users to deliver statements, thoughts and links in 140 characters to followers as well as a wider Internet audience, is the latest online communications technology adopted by MPs. Assessing the use by early adopters, this article considers which MPs are most likely to use Twitter (for example, tweeting), and how. Content analysis of MPs' Twitter feeds was conducted, and personal and political characteristics identified which may influence use. The data suggested that of the six characteristics tested, gender, party and seniority had most impact on adoption. Applying Jones and Pittman's 1982 typology, there is clear evidence that MPs use Twitter as a tool of impression management. Constituency service is a secondary function of the use of Twitter by MPs. Where MPs use Twitter as part of their constituency role it is to promote their local activity. This article notes that a small group of MPs use Twitter as a regular communication channel, but most are only occasi...

Intermittent versus continuous oxaliplatin and fluoropyrimidine combination chemotherapy for first-line treatment of advanced colorectal cancer: results of the randomised phase 3 MRC COIN trial

Abstract: Background: When cure is impossible, cancer treatment should focus on both length and quality of life. Maximisation of time without toxic effects could be one effective strategy to achieve both of these goals. The COIN trial assessed preplanned treatment holidays in advanced colorectal cancer to achieve this aim. Methods: COIN was a randomised controlled trial in patients with previously untreated advanced colorectal cancer. Patients received either continuous oxaliplatin and fluoropyrimidine combination (arm A), continuous chemotherapy plus cetuximab (arm B), or intermittent (arm C) chemotherapy. In arms A and B, treatment continued until development of progressive disease, cumulative toxic effects, or the patient chose to stop. In arm C, patients who had not progressed at their 12-week scan started a chemotherapy-free interval until evidence of disease progression, when the same treatment was restarted. Randomisation was done centrally (via telephone) by the MRC Clinical Trials Unit using minimisation. Treatment allocation was not masked. The comparison of arms A and B is described in a companion paper. Here, we compare arms A and C, with the primary objective of establishing whether overall survival on intermittent therapy was non-inferior to that on continuous therapy, with a predefined non-inferiority boundary of 1·162. Intention-to-treat (ITT) and per-protocol analyses were done. This trial is registered, ISRCTN27286448. Findings: 1630 patients were randomly assigned to treatment groups (815 to continuous and 815 to intermittent therapy). Median survival in the ITT population (n=815 in both groups) was 15·8 months (IQR 9·4–26·1) in arm A and 14·4 months (8·0–24·7) in arm C (hazard ratio [HR] 1·084, 80% CI 1·008–1·165). In the per-protocol population (arm A, n=467; arm C, n=511), median survival was 19·6 months (13·0–28·1) in arm A and 18·0 months (12·1–29·3) in arm C (HR 1·087, 0·986–1·198). The upper limits of CIs for HRs in both analyses were greater than the predefined non-inferiority boundary. Preplanned subgroup analyses in the per-protocol population showed that a raised baseline platelet count, defined as 400 000 per μL or higher (271 [28%] of 978 patients), was associated with poor survival with intermittent chemotherapy: the HR for comparison of arm C and arm A in patients with a normal platelet count was 0·96 (95% CI 0·80–1·15, p=0·66), versus 1·54 (1·17–2·03, p=0·0018) in patients with a raised platelet count (p=0·0027 for interaction). In the per-protocol population, more patients on continuous than on intermittent treatment had grade 3 or worse haematological toxic effects (72 [15%] vs 60 [12%]), whereas nausea and vomiting were more common on intermittent treatment (11 [2%] vs 43 [8%]). Grade 3 or worse peripheral neuropathy (126 [27%] vs 25 [5%]) and hand–foot syndrome (21 [4%] vs 15 [3%]) were more frequent on continuous than on intermittent treatment. Interpretation: Although this trial did not show non-inferiority of intermittent compared with continuous chemotherapy for advanced colorectal cancer in terms of overall survival, chemotherapy-free intervals remain a treatment option for some patients with advanced colorectal cancer, offering reduced time on chemotherapy, reduced cumulative toxic effects, and improved quality of life. Subgroup analyses suggest that patients with normal baseline platelet counts could gain the benefits of intermittent chemotherapy without detriment in survival, whereas those with raised baseline platelet counts have impaired survival and quality of life with intermittent chemotherapy and should not receive a treatment break. Funding: Cancer Research UK.

Managing non‐native fish in the environment

Abstract: Non-native fishes are frequently used to enhance aquaculture and fisheries; if introduced into the wider environment, then the majority will have negligible effects on native biodiversity. However, a minority will become invasive, causing adverse ecological effects, and so management actions may be needed to minimize their dispersal and impacts. These actions include eradication attempts from specific waters or well-defined spatial areas, population control by suppression (e.g. through removal programmes) and containment of existing populations to prevent their further spread. These remedial actions have generally only been undertaken across large spatial areas in developed countries; experience suggests a fundamental constraint is a lack of selective removal methods that target the non-native fish species only. For example, eradication methods tend to be limited to low technology, ‘scorched-earth’ techniques (e.g. biocide chemicals) whose use is generally constrained to relatively small and enclosed water bodies. Risk management of non-native fishes should ensure that actions taken are commensurate with the level of risk posed by that species in the environment; although pre-introduction risk assessment schemes have been developed, there remains a lack of decision support tools for post-introduction situations. Although this inhibits the management of non-native fishes in the environment, control programmes such as those against common carp Cyprinus carpio in Australia and topmouth gudgeon Pseudorasbora parva in England and Wales suggest there is potential for invasions to be managed and controlled within large spatial areas, even if their eradication may not be feasible.

Food security in South Africa: a review of national surveys

Abstract: OBJECTIVE: To assess the status of food security - i.e. access to food, food availability and food utilization - in South Africa. METHODS: A systematic search of national surveys that used the Community Childhood Hunger Identification Project (CCHIP) index to measure food security in South Africa over a period of 10 years (1999-2008) was conducted. Anthropometric data for children aged 1-9 years were used to assess food utilization, and household food inventory data were used to assess food availability. FINDINGS: Only three national surveys had used the CCHIP index, namely, the 1999 and 2005 National Food Consumption Surveys (NFCS) and the 2008 South African Social Attitudes Survey. These surveys showed a relatively large decrease in food insecurity between 1999 and 2008. However, the consistent emerging trend indicated that in poorer households women were either feeding their children a poor diet or skipping meals so their children could eat. In terms of food access and availability, the 1999 NFCS showed that households that enjoyed food security consumed an average of 16 different food items over 24 hours, whereas poorer households spent less money on food and consumed fewer than 8 different food items. Moreover, children had low mean scores for dietary diversity (3.58; standard deviation, SD: ± 1.37) and dietary variety (5.52; SD: ± 2.54) scores. In terms of food utilization, the NFCS showed that stunting in children decreased from 21.6% in 1999 to 18% in 2005. CONCLUSION: The South African government must implement measures to improve the undesirably high level of food insecurity in poorer households.

Being a Qualitative Researcher

Abstract: This article, from a keynote address, is the result of some of the things which I learned about qualitative research during my many years of doing and teaching it. The main point I make is that qualitative researchers should present a good story which is based on evidence but focused on meaning rather than measurement. In qualitative inquiry, the researchers' selves are involved, their experiences become a resource. Researchers cannot distance themselves from the other participants, although they cannot fully present their meaning and experience. I also discuss voice, paradigm, and innovation as potentially problematic issues in qualitative research. These are terms often used but not always examined for their meaning in qualitative inquiry. If researchers are aware and sensitive, rather than overemotional or self-absorbed, qualitative research can be enlightening, person-centered, and humanistic.

Informing, engaging, mobilizing or interacting: Searching for a European model of web campaigning:

Abstract: This study presents data from content analyses of the websites of all parties that stood in the 2009 European parliamentary elections in France, Germany, Great Britain and Poland. It cross-nationally examines the main functions of the websites, the adoption of Web 1.0 and Web 2.0 features, and the political and cultural factors that determine parties’ online communication. The findings show that while the main website function varies across countries, Web 1.0 is still the dominant mode of campaigning. Moreover, offline inequalities within and between nations determine differences in parties’ individual online strategies: specifically, major parties in states with long histories of democracy and EU membership lead the way and offer more interactive and innovative modes of campaigning. On the other hand, minor parties, particularly in Poland, remain in a more Web 1.0, information-heavy mode of communication. This supports the so-called normalization thesis on both the meso and the macro level.

Slow travel: issues for tourism and climate change

Abstract: This paper analyses the eclectic evolution of slow travel, examines key features and interpretations, and develops a slow travel framework as an alternative way of conceptualising holidays in the future. The paper focuses on slow travel's potential to respond to the challenges of climatic change: travel currently accounts for 50–97.5% of the overall emissions impact of most tourism trips. In-depth interviews with self-identified slow travellers illustrate and underpin the concept and note that slow travellers form a continuum from “soft” to “hard” slow travellers. The paper explores time as a social institution, timeless time and fragmented time, travel as an integral part of the tourist experience, and the links between tourism and the travellers’ self-identity and lifestyles. Special attention is given to people and place engagement, to behavioural choice and decision-making psychology, and to the role and growth of web communities. Slow travel is shown to require both holiday type/style choices and tra...

Social Media Impact on Holiday Travel Planning: The Case of the Russian and the FSU Markets

Abstract: The impact of social media on the travel industry is predicted to be tremendous, especially on its holiday travel segment. Although there is a plethora of studies concentrating on the role and impact of social media in travel related decisions, most of them are medium and community specific, or focus on a specific stage of the decision making or the travel planning process. This paper presents a comprehensive view of the role and impact of social media on the travel planning process: before, during and after the trip, providing insights on usage levels, scope of use, level of influence, and trust. The study was conducted through an online structured questionnaire on a sample of 346 members of an online panel of internet users from Russia and the other Former Soviet Union (FSU) Republics who had been on holidays in the previous 12 months. Findings reveal that social media are predominantly used after holidays for experience sharing. It is also shown that there is a strong correlation between level of influence from social media and changes made to holiday plans. Moreover, it is revealed that user-generated content is more trusted than official tourism websites, travel agents, and mass media advertising.

Non-native aquatic animals introductions have driven disease emergence in Europe

Abstract: In this paper it is argued, using examples of disease emergence in aquatic animals in Europe, that the introduction of non-native species drives disease emergence by both extending the geographic range of parasites and pathogens and facilitating host-switching. Enteric red mouth disease and infectious haematopoietic necrosis of salmonids have extended their geographic range from North America to Europe with the import of live fish (Pimephales promelas) and rainbow trout eggs, respectively. Host-switching results in disease emergence when previously unidentified commensal organisms or known pathogen switch to new naive hosts. The most serious endemic diseases of wild aquatic animals in Europe in recent years can be traced to the introduction of non-native species. Across Europe dramatic populations declines have occurred in native crayfish (e.g. Astacus astacus), oysters (Ostrea edulis) and eels (Anguilla anguilla), all which can be attributed, in varying degrees, to diseases (crayfish plague, Bonamia ostreae and Anguillicoloides crassus, respectively) introduced with non-native species. The severe adverse effects at a population level can be attributed to the lack of immunity in the new hosts. The impact of parasites more recently introduced to Europe, Sphaerothecum destruens (the rosette agent), and Batrachochytrium dendrobatidis, have yet to be fully determined. Both are generalists, with wide host ranges, and may present serious threats to native species. Aquaculture is the key driver for the introduction of non-native species. Most farming systems allow pathogen exchange between farmed and wild populations which underpins host-switching. Subsequently movements of animals between farms may result in the spread of newly emerged diseases. The introduction of non-native aquatic animals drives disease emergence, thus the ex-ante assessment of these hazards is severely limited. Generic risk mitigation measures (e.g. movement of disinfected eggs in place of live animals) and improved methods for rapid detection of new diseases are vital.

Local learning‐based adaptive soft sensor for catalyst activation prediction

Abstract: This work presents an algorithm for the development of adaptive soft sensors. The method is based on the local learning framework, where locally valid models are built and maintained. In this framework, it is possible to model nonlinear relationship between the input and output data by the means of a combination of linear models. The method provides the possibility to perform adaptation at two levels: (i) recursive adaptation of the local models and (ii) the adaptation of the combination weights. The dataset used for evaluation of the algorithm describes a polymerization reactor where the target value is a simulated catalyst activity in the reactor. This dataset is also used to evaluate the performance of the proposed algorithm. The results show that the traditional recursive partial least squares algorithm struggles to deliver accurate predictions. In contrast to this, by exploiting the two-level adaptation scheme, the proposed algorithm delivers more accurate results. © 2010 American Institute of Chemical Engineers AIChE J, 57, 2011

Handling Conditional Discrimination

Abstract: Historical data used for supervised learning may contain discrimination. We study how to train classifiers on such data, so that they are discrimination free with respect to a given sensitive attribute, e.g., gender. Existing techniques that deal with this problem aim at removing all discrimination and do not take into account that part of the discrimination may be explainable by other attributes, such as, e.g., education level. In this context, we introduce and analyze the issue of conditional non-discrimination in classifier design. We show that some of the differences in decisions across the sensitive groups can be explainable and hence tolerable. We observe that in such cases, the existing discrimination aware techniques will introduce a reverse discrimination, which is undesirable as well. Therefore, we develop local techniques for handling conditional discrimination when one of the attributes is considered to be explanatory. Experimental evaluation demonstrates that the new local techniques remove exactly the bad discrimination, allowing differences in decisions as long as they are explainable.

Information-enabled tourism destination marketing: addressing the accessibility market

Abstract: This paper demonstrates that the accessibility market is not homogenous, but it entails different sub-segments with distinct needs and requirements Ultimately each person is unique in his/her abilities and preferences and this is more evident in this market Secondary research revealed the size of the accessibility market in Europe to be 127 million people Extensive qualitative research through 16 focus groups has demonstrated that the main requirements of these segments focus on three interlinked elements, namely accessible built environment, information regarding accessibility and accessible information online Traditional segmentation contradicts the central concept of participation, as directed by the social model of disability, and it entails assumptions regarding the requirements of the market segments Information communication technologies (ICTs) can assist destinations to effectively address the particular requirements of these market segments through the use of profiling and personalisation fe

Procedural function-based modelling of volumetric microstructures

Abstract: We propose a new approach to modelling heterogeneous objects containing internal volumetric structures with size of details orders of magnitude smaller than the overall size of the object. The proposed function-based procedural representation provides compact, precise, and arbitrarily parametrized models of coherent microstructures, which can undergo blending, deformations, and other geometric operations, and can be directly rendered and fabricated without generating any auxiliary representations (such as polygonal meshes and voxel arrays). In particular, modelling of regular lattices and cellular microstructures as well as irregular porous media is discussed and illustrated. We also present a method to estimate parameters of the given model by fitting it to microstructure data obtained with magnetic resonance imaging and other measurements of natural and artificial objects. Examples of rendering and digital fabrication of microstructure models are presented.

An Evaluation of Students' Perceptions and Engagement with E-Learning Components in a Campus Based University

Abstract: This article explores the pattern of use of a typical e-learning system by students in a campus based university. Whilst numerous studies of e-learning have provided fascinating insights into its potential benefits, a common concern is that mainstream studies in this area have focused largely on staff experience with limited attention paid to students’ perceptions and engagement. This study goes some way in bridging this gap by exploring students’ perceptions and patterns of use of a typical e-learning system. The findings suggest that a large percentage of the students had very positive perceptions and the frequency of usage of the e-learning system was also very high, with the vast majority using it frequently to supplement the traditional face-to-face classroom method. These results were irrespective of gender, age and nationality. Some of the implications of the findings are discussed.

Trading frequency and asset pricing on the London Stock Exchange: Evidence from a new price impact ratio

Abstract: This study proposes a new price impact ratio as an alternative to the widely used Amihud’s (2002) Return-to-Volume ratio. We demonstrate that the new price impact ratio, which is deemed Return-to-Turnover ratio , has a number of appealing features. Using daily data from all stocks listed on the London Stock Exchange over the period 1991–2008, we provide overwhelming evidence that this ratio, while being unequivocal to construct and interpret, is also free of a size bias. More importantly, it encapsulates the stocks’ cross-sectional variability in trading frequency, a relatively neglected but possibly important determinant of stock returns given the recently observed trends in financial markets. Overall, our findings argue against the conventional wisdom that there is a simple direct link between trading costs and stock returns by strongly suggesting that it is the compound effect of trading frequency and transaction costs that matters for asset pricing, not each aspect in isolation.

An Analysis of Cause-Related Marketing Implementation Strategies Through Social Alliance: Partnership Conditions and Strategic Objectives

Abstract: Cause-related marketing (CRM) is an effective marketing tool for promoting corporate social responsibility (CSR) activities and the bulk of campaigns are designed and delivered through collaborative ‘social’ alliances with non-profit organisations (NPOs). The authors seek to uncover some of the factors that explain how firms and NPOs choose their potential partners in the development of their CRM strategy. The rationales for the observed patterns are investigated through semi-structured interviews conducted with managers employed by the UK-based firms and NPOs. The authors find that each party has specific preferences when choosing the particular CRM implementation strategies in different situations, as well as different initial positions when negotiating the formation of the social alliance. This article contributes to our understanding of the CRM implementation strategies and both the company’s and the NPO’s behaviours toward each of the strategies.