Showing papers by "Cranfield University published in 2006"

Giant Electrocaloric Effect in Thin-Film PbZr0.95Ti0.05O3

Abstract: An applied electric field can reversibly change the temperature of an electrocaloric material under adiabatic conditions, and the effect is strongest near phase transitions. We demonstrate a giant electrocaloric effect (0.48 kelvin per volt) in 350-nanometer PbZr 0.95 Ti 0.05 O 3 films near the ferroelectric Curie temperature of 222°C. A large electrocaloric effect may find application in electrical refrigeration.

Innovation management measurement: A review

Abstract: Measurement of the process of innovation is critical for both practitioners and academics, yet the literature is characterized by a diversity of approaches, prescriptions and practices that can be confusing and contradictory. Conceptualized as a process, innovation measurement lends itself to disaggregation into a series of separate studies. The consequence of this is the absence of a holistic framework covering the range of activities required to turn ideas into useful and marketable products. We attempt to address this gap by reviewing the literature pertaining to the measurement of innovation management at the level of the firm. Drawing on a wide body of literature, we first develop a synthesized framework of the innovation management process consisting of seven categories: inputs management, knowledge management, innovation strategy, organizational culture and structure, portfolio management, project management and commercialization. Second, we populate each category of the framework with factors empirically demonstrated to be significant in the innovation process, and illustrative measures to map the territory of innovation management measurement. The review makes two important contributions. First, it takes the difficult step of incorporating a vastly diverse literature into a single framework. Second, it provides a framework against which managers can evaluate their own innovation activity, explore the extent to which their organization is nominally innovative or whether or not innovation is embedded throughout their organization, and identify areas for improvement.

Critical success factors for lean implementation within SMEs

Abstract: Purpose – The aim of this research paper is to present the critical factors that constitute a successful implementation of lean manufacturing within manufacturing SMEs.Design/methodology/approach – A combination of comprehensive literature review and visits to ten SMEs based in the East of the UK were employed in the study. The companies' practices were observed to highlight the degree of lean manufacturing utilisation within these companies. This was followed by interviewing of the relevant and key personnel involved in lean implementation. Results were analysed and validated through workshops, case studies and Delphi techniques.Findings – Several critical factors that determine the success of implementing the concept of lean manufacturing within SMEs are identified. Leadership, management, finance organisational culture and skills and expertise, amongst other factors; are classified as the most pertinent issues critical for the successful adoption of lean manufacturing within SMEs environment.Research l...

Ecological Restoration and Global Climate Change

Abstract: There is an increasing consensus that global climate change occurs and that potential changes in climate are likely to have important regional consequences for biota and ecosystems. Ecological restoration, including (re)afforestation and rehabilitation of degraded land, is included in the array of potential human responses to climate change. However, the implications of climate change for the broader practice of ecological restoration must be considered. In particular, the usefulness of historical ecosystem conditions as targets and references must be set against the likelihood that restoring these historic ecosystems is unlikely to be easy, or even possible, in the changed biophysical conditions of the future. We suggest that more consideration and debate needs to be directed at the implications of climate change for restoration practice.

Fishing, Trophic Cascades, and the Process of Grazing on Coral Reefs

Abstract: Since the mass mortality of the urchin Diadema antillarum in 1983, parrotfishes have become the dominant grazer on Caribbean reefs. The grazing capacity of these fishes could be impaired if marine reserves achieve their long-term goal of restoring large consumers, several of which prey on parrotfishes. Here we compare the negative impacts of enhanced predation with the positive impacts of reduced fishing mortality on parrotfishes inside reserves. Because large-bodied parrotfishes escape the risk of predation from a large piscivore (the Nassau grouper), the predation effect reduced grazing by only 4 to 8%. This impact was overwhelmed by the increase in density of large parrotfishes, resulting in a net doubling of grazing. Increased grazing caused a fourfold reduction in the cover of macroalgae, which, because they are the principal competitors of corals, highlights the potential importance of reserves for coral reef resilience.

Thirty Years of Mergers and Acquisitions Research: Recent Advances and Future Opportunities

Abstract: The complex phenomenon that mergers and acquisitions (M&As) represent has attracted substantial interest from a variety of management disciplines over the past 30 years. Three primary streams of enquiry can be identified within the strategic and behavioural literature, which focus on the issues of strategic fit, organizational fit and the acquisition process itself. The recent achievements within each of these research streams are briefly reviewed. However, in parallel to these research advances, the failure rates of mergers and acquisitions have remained consistently high. Possible reasons for this dichotomy are discussed, which in turn highlight the significant opportunities that remain for future M&A research.

Converting Ceria Polyhedral Nanoparticles into Single-Crystal Nanospheres

Abstract: Ceria nanoparticles are one of the key abrasive materials for chemical-mechanical planarization of advanced integrated circuits. However, ceria nanoparticles synthesized by existing techniques are irregularly faceted, and they scratch the silicon wafers and increase defect concentrations. We developed an approach for large-scale synthesis of single-crystal ceria nanospheres that can reduce the polishing defects by 80% and increase the silica removal rate by 50%, facilitating precise and reliable mass-manufacturing of chips for nanoelectronics. We doped the ceria system with titanium, using flame temperatures that facilitate crystallization of the ceria yet retain the titania in a molten state. In conjunction with molecular dynamics simulation, we show that under these conditions, the inner ceria core evolves in a single-crystal spherical shape without faceting, because throughout the crystallization it is completely encapsulated by a molten 1- to 2-nanometer shell of titania that, in liquid state, minimizes the surface energy. The principle demonstrated here could be applied to other oxide systems.

A taxonomy for selecting global supply chain strategies

Abstract: Purpose – The purpose of this paper is to address the increasingly important question of supply chain design for global operations. With the rise of off-shore sourcing and the simultaneous need for improved responsiveness to customer demand, the choice of supply chain strategy is critical. Design/methodology/approach – The paper draws its conclusions from case-based research supported by survey data. Findings – The paper provides evidence that the choice of supply chain strategy should be based upon a careful analysis of the demand/supply characteristics of the various product/markets served by a company. It presents the basis for a taxonomy of appropriate supply chain strategies. Research limitations/implications – The case studies and empirical research reported in this paper are specific to the clothing manufacturing and fashion industries and there would be benefit in extending the research into other sectors. Practical implications – Given the increasing trend to out-sourcing and off-shore sourcing, the choice of supply chain strategy is of some significance and clearly impacts competitive performance. Originality/value – Whilst there is a growing recognition of the need to match the supply chain to the market, there is still limited research into what criteria should be utilised to aid the choice of supply chain strategy. This paper attempts to extend our understanding of the issues.

Distributed situation awareness in dynamic systems: theoretical development and application of an ergonomics methodology

Abstract: The purpose of this paper is to propose foundations for a theory of situation awareness based on the analysis of interactions between agents (i.e. both human and non-human) in subsystems. This approach may help to promote a better understanding of technology-mediated interaction in systems, as well as helping in the formulation of hypotheses and predictions concerning distributed situation awareness. It is proposed that agents within a system each hold their own situation awareness, which may be very different from (although compatible with) that of other agents. It is argued that we should not always hope for, or indeed want, sharing of this awareness, as different system agents have different purposes. This view marks situation awareness as a dynamic and collaborative process binding agents together on tasks on a moment-by-moment basis. Implications of this viewpoint for the development of a new theory of, and accompanying methodology for, distributed situation awareness are offered.

Customer Relationship Management: from Strategy to Implementation

Abstract: This article examines Customer Relationship Management, or CRM, from the perspective of strategy formulation and implementation. We commence by reviewing the origins and role of CRM and highlighting the importance of adopting a cross-functional approach to CRM strategy formulation. We examine alternative approaches to CRM strategy development and, using an 'interaction research' approach, propose a model that addresses both CRM strategy and implementation. We identify four critical implementation components of a successful CRM programme and examine these in the context of five key cross-functional CRM processes. The model structure is used to help identify a research agenda

Reconciling supply chain vulnerability, risk and supply chain management

Abstract: Supply chain vulnerability has become a fashionable area of management research. The purpose of this paper is to provide a critique of the extant canon and to review of the positioning of research in the field, together with literature drawn from several relevant and overlapping fields of research and practice. The aim is to foster a more explicit understanding of the relationships between supply chain vulnerability, risk and supply chain management, and in turn their relevance to related fields such as corporate governance, business continuity management, security and emergency planning. The ultimate objective is to clarify the agenda for further research. The paper begins with an examination of the concept of a “supply chain” and the scope and nature of supply chain management (SCM), then the fusion of SCM with the many and varied interpretations of “risk” and its faltering relationship to risk management. It is argued that attitudes to risk and approaches to risk management vary greatly within SCM and ...

From 3D to 2D: a review of the molecular imprinting of proteins.

Abstract: Molecular imprinting is a generic technology that allows for the introduction of sites of specific molecular affinity into otherwise homogeneous polymeric matrices. Commonly this technique has been shown to be effective when targeting small molecules of molecular weight <1500, while extending the technique to larger molecules such as proteins has proven difficult. A number of key inherent problems in protein imprinting have been identified, including permanent entrapment, poor mass transfer, denaturation, and heterogeneity in binding pocket affinity, which have been addressed using a variety of approaches. This review focuses on protein imprinting in its various forms, ranging from conventional bulk techniques to novel thin film and monolayer surface imprinting approaches.

Polyhedral Oligomeric Silsesquioxanes (POSS)-Containing Nanohybrid Polymers

Abstract: Polyhedral oligosilsesquioxane (POSS)-based hybrid polymers have generated much interest recently, both from the academic and industrial points of view. POSS are completely defined molecules of nanoscale dimensions that may be functionalized with reactive groups suitable for the synthesis of new organic–inorganic hybrids, thus providing the opportunity to design and build materials with extremely well-defined dimensions possessing nanophase behavior. POSS have been successfully incorporated into common polymers via copolymerization, grafting or blending. A variety of POSS-containing copolymers have been prepared and they have displayed great potential in the development of a wide range of hybrid nanomaterials with diverse properties. This work has critically evaluated the recent developments in syntheses of POSS polymer materials leading to POSS nanocomposites. The syntheses of POSS cages, monomers containing POSS cages, POSS-dendrimers' cores, POSS-containing polymers (nanobuilding blocks) and POSS nanocomposites are described in detail. This work also assesses the properties of POSS nanobuilding blocks that can be otherwise used for developing nanocomposites. Such properties include mechanical, thermal, flame-retardant and viscoelastic properties. Investigations into the structure, morphology and compatibility of POSS nanobuilding blocks have been reviewed. Other properties covered include the ion-mobility and swelling characteristics as well as porosity of POSS nanobuilding blocks. Lastly, existing and possible future applications are highlighted and final conclusions are drawn.

Corporate Social Responsibility in Supply Chains of Global Brands: A Boundaryless Responsibility? Clarifications, Exceptions and Implications

Abstract: Corporate social responsibility (CSR) is increasingly becoming a popular business concept in developed economies. As typical of other business concepts, it is on its way to globalization through practices and structures of the globalized capitalist world order, typified in Multinational Corporations (MNCs). However, CSR often sits uncomfortably in this capitalist world order, as MNCs are often challenged by the global reach of their supply chains and the possible irresponsible practices inherent along these chains. The possibility of irresponsible practices puts global firms under pressure to protect their brands even if it means assuming responsibilities for the practices of their suppliers. Pressure groups understand this burden on firms and try to take advantage of the situation. This paper seeks to challenge the often taken-for-granted-assumption that firms should be accountable for the practices of their suppliers by espousing the moral (and sometimes legal) underpinnings of the concept of responsibility. Except where corporate control and or corporate grouping exist, it identifies the use of power as a critical factor to be considered in allocating responsibility in firm-supplier relationship; and suggests that the more powerful in this relationship has a responsibility to exert some moral influence on the weaker party. The paper highlights the use of code of conducts, corporate culture, anti-pressure group campaigns, personnel training and value reorientation as possible sources of wielding positive moral influence along supply chains.

Using qualitative research synthesis to build an actionable knowledge base

Abstract: Purpose – The purpose of this paper is to address the qualitative synthesis and use of existing management research to inform management practice.Design/methodology/approach – Three methods of qualitative synthesis, each with contrasting methodologies, are presented and their potential contribution in the management field explored.Findings – Professional practice could be improved if practitioners had better access to the products of a large body of management research. Evidence‐based reviews of the literature in the management field could form a crucial bridge between research and practice. The task of reviewing and synthesising qualitative studies comprises a key challenge.Research limitations/implications – The key issues in conducting qualitative synthesis are highlighted and the barriers and enablers to the application of the product of qualitative synthesis in practice are discussed.Originality/value – The paper stimulates debate about what counts as an effective synthesis of qualitative research an...

Supply chain management: theory, practice and future challenges

Abstract: Purpose – The purpose of this paper is to critically assess current developments in the theory and practice of supply management and through such an assessment to identify barriers, possibilities and key trends.Design/methodology/approach – The paper is based on a three‐year detailed study of six supply chains which encompassed 72 companies in Europe. The focal firms in each instance were sophisticated, blue‐chip corporations operating on an international scale. Managers across at least four echelons of the supply chain were interviewed and the supply chains were traced and observed.Findings – The paper reveals that supply management is, at best, still emergent in terms of both theory and practice. Few practitioners were able – or even seriously aspired – to extend their reach across the supply chain in the manner prescribed in much modern theory. The paper identifies the range of key barriers and enablers to supply management and it concludes with an assessment of the main trends.Research limitations/imp...

Corporate Social Responsibility in Nigeria: Western Mimicry Or Indigenous Influences?

Abstract: Drawing empirical evidence from indigenous firms, this study explores the meaning and practice of CSR in Nigeria. It was found that indigenous firms perceive and practise CSR as corporate philanthropy aimed at addressing socio-economic development challenges in Nigeria. This finding confirms that CSR is a localised and socially embedded construct, as the 'waves', 'issues' and 'modes' of CSR practices identified amongst indigenous firms in Nigeria reflect the firms' responses to their socio-economic context. It is anticipated that this paper will add to the body of knowledge on CSR, especially as it relates to Africa, which has a relatively dearth of literature on CSR; and provide some insights to multinational firms operating in Nigeria.

A review of residential water conservation tool performance and influences on implementation effectiveness

Abstract: Water scarcity and household water consumption has received increasing attention on national public agendas in recent years. At the same time a number of important demand-side management (DSM) studies have been reported on by non-academic institutions, and there is a need for a comprehensive, up to date review of the impacts of DSM tools and the factors which influence their effectiveness. This paper aims to address an apparent lack of coverage in the academic literature by presenting a review of residential DSM tools using reports of recent DSM campaigns in the western (developed) world. The central objectives are to understand the potential for residential DSM tools to save water in different types of household under varying conditions and to identify influences on implementation effectiveness. In the discussion, we explore causes of uncertainty in DSM planning including the non-transferability of trends and existing methods of evaluation, and describe some of the resulting problems. The conclusions off...

Measuring the Performance of Corporate Acquisitions: An Empirical Comparison of Alternative Metrics*

Abstract: The choice of performance measure has long been a difficult issue facing researchers. This article investigates the comparability of four common measures of acquisition performance: cumulative abnormal returns, managers' assessments, divestment data and expert informants' assessments. Independently each of these measures indicated a mean acquisition success rate of between 44–56%, within a sample of British cross-border acquisitions. However, with the exception of a positive relationship between managers' and expert informants' subjective assessments, no significant correlation was found between the performance data generated by the alternative metrics. In particular, ex-ante capital market reactions to an acquisition announcement exhibited little relation to corporate managers' ex-post assessment. This is seen to reflect the information asymmetry that can exist between investors and company management, particularly regarding implementation aspects. Overall, the results suggest that future acquisitions studies should consider employing multiple performance measures in order to gain a holistic view of outcome, while in the longer term, opportunities remain to identify and refine improved metrics.

Three-dimensional Microorganization of the Soil–Root–Microbe System

Abstract: Soils contain the greatest reservoir of biodiversity on Earth, and the functionality of the soil ecosystem sustains the rest of the terrestrial biosphere. This functionality results from complex interactions between biological and physical processes that are strongly modulated by the soil physical structure. Using a novel combination of biochemical and biophysical indicators and synchrotron microtomography, we have discovered that soil microbes and plant roots microengineer their habitats by changing the porosity and clustering properties (i.e., spatial correlation) of the soil pores. Our results indicate that biota act to significantly alter their habitat toward a more porous, ordered, and aggregated structure that has important consequences for functional properties, including transport processes. These observations support the hypothesis that the soil–plant–microbe complex is self-organized.