Recent Submissions

  • Measuring operational excellence: an operational excellence profitability (OEP) approach.

    Gólcher-Barguil, L.A.; Nadeem, S.P.; Garza-Reyes, J.A.; University of Derby (Taylor & Francis, 2019-03-08)
    The pursuit of operational excellence in the manufacturing industry is at rise, but its measurement still lacks of appropriate indicators to determine its financial benefits. The ambiguity is due to the impact arisen from manufacturing fluctuations such as price and cost, production mix, and direct and indirect parameters variations. Manufacturing fluctuations distort the cost benefit of operational excellence. This paper therefore proposes the OEP (Operational Excellence Profitability) indicators to isolate the impact of manufacturing fluctuation, and distinctly identify the payback of operational excellence strategies and initiatives through cost benefits of achieving higher efficiency and yield. The paper presents the conceptual and mathematical development of the proposed OEP indicators and the formulas used for their calculation. Hypothetical and industrial-based investigations and applications of the OEP indicators are conducted for their validation. The results obtained from the hypothetical exercise and industrial case suggest that OEP indicators can provide an effective cost benefit analysis of operational excellence. This would contribute in providing manufacturing organisations with more complete information regarding the performance of their processes, which will allow their directors and managers to take better decisions related to the management and improvement of their processes.
  • Building routines for non-routine events: Supply chain resilience learning mechanisms and their antecedents.

    Scholten, Kirstin; Sharkey Scott, Pamela; Fynes, Brian; University College Dublin; University of Groningen; Dublin City University (Emerald., 2019)
    Organisations must build resilience to be able to deal with disruptions or non-routine events in their supply chains. While learning is implicit in definitions of supply chain resilience, there is little understanding of how exactly organisations can adapt their routines to build resilience. The aim of this study is to address this gap. An in-depth qualitative case study based on 28 interviews across five companies exploring learning to build supply chain resilience. This study uncovers six learning mechanisms and their antecedents that foster supply chain resilience. The learning mechanisms identified suggest that, through knowledge creation within an organisation and knowledge transfer across the supply chain and broader network of stakeholders, operating routines are built and/ or adapted both intentionally and unintentionally during three stages of a supply chain disruption: preparation, response and recovery. This study shows how the impact of a supply chain disruption may be reduced by intentional and unintentional learning in all three disruption phases. By being aware of the antecedents of unintentional learning organisations can more consciously adapt routines. Furthermore, findings highlight the potential value of additional attention to knowledge transfer, particularly in relation to collaborative and vicarious learning across the supply chain and broader network of stakeholders not only in preparation for, but also in response to and recovery from disruptions. This study contributes novel insights about how learning leads both directly and indirectly to the evolution of operating routines that help an organisation and its supply chains to deal with disruptions. Results detail six specific learning mechanisms for knowledge creation and knowledge transfer and their antecedents for building supply chain resilience. In doing so, this study provides new fine grained theoretical insights about how supply chain resilience can be improved through all three phases of a disruption. Propositions are developed for theory development.
  • Prediction of financial distress for multinational corporations: Panel estimations across countries.

    Apergis, Nicholas; Bhattacharya, Mita; Inekwe, John; University of Piraeus; Monash University; Macquarie University (Taylor & Francis, 2019-03-21)
    This research predicts ex-ante financial distress and analyses the link between financial distress, performance, employment, and research and development (R&D) investment in the case of multinational companies (MNCs). The conditional logit and hazard models are employed to predict financial distress, while a conditional mixed process model is employed to obtain consistent and efficient estimates. Financial distress generates contractions in performance, employment, and R&D investment. Hedging against risk mitigates the effect of financial distress on R&D. Our findings vary across countries, for example, we find MNCs in Canada, Israel and the U.S. benefit from hedging against risk. The findings also indicate that ex-ante financial distress is detrimental to employment for Canada, the U.K., the Netherlands and the U.S. The findings indicate the MNCs play different roles across countries in contributing jobs, investment in R&D during the distress period.
  • Horizons

    Hall, Mark; University of Derby (SACI Florence, 2016-06-04)
  • Application of ultrasound in the assessment of plantar fascia in patients with plantar fasciitis: a systematic review

    Mohseni-Bandpei, Mohammad Ali; Nakhaee, Masoomeh; Mousavi, Mohammad Ebrahim; Shakourirad, Ali; Safari, Mohammad Reza; Vahab Kashani, Reza; University of Social Welfare and Rehabilitation Sciences (Elsevier, 2014-05-03)
    Plantar fasciitis (PFS) is one of the most common causes of heel pain, estimated to affect 10% of the general population during their lifetime. Ultrasound (US) imaging technique is increasingly being used to assess plantar fascia (PF) thickness, monitor the effect of different interventions and guide therapeutic interventions in patients with PFS. The purpose of the present study was to systematically review previously published studies concerning the application of US in the assessment of PF in patients with PFS. A literature search was performed for the period 2000-2012 using the Science Direct, Scopus, PubMed, CINAHL, Medline, Embase and Springer databases. The key words used were: ultrasound, sonography, imaging techniques, ultrasonography, interventional ultrasonography, plantar fascia and plantar fasciitis. The literature search yielded 34 relevant studies. Sixteen studies evaluated the effect of different interventions on PF thickness in patients with PFS using US; 12 studies compared PF thickness between patients with and without PFS using US; 6 studies investigated the application of US as a guide for therapeutic intervention in patients with PFS. There were variations among studies in terms of methodology used. The results indicated that US can be considered a reliable imaging technique for assessing PF thickness, monitoring the effect of different interventions and guiding therapeutic interventions in patients with PFS.
  • The prototype of a thermoregulatory system for measurement and control of temperature inside prosthetic socket

    Ghoseiri, Kamiar; Zheng, Yong Ping; Hing, Louis Lee Tat; Safari, Mohammad Reza; Leung, Aaron KL; University of Social Welfare and Rehabilitation Sciences (SAGE, 2015-06-11)
    Thermal related problems with prostheses are common complaints of amputee people. This article aims to introduce a thermoregulatory technique as a potential solution for those problems in prostheses wearers. A smart thermoregulatory system was designed, manufactured, and installed on a phantom model of a prosthetic socket. It captured temperature data from 16 sensors positioned at the interface between the phantom model and a silicone liner and used their average for comparison with a defined set temperature to select required heating or cooling functions for thermal equilibrium. A thin layer of Aluminum was used to transfer temperature between thermal pump and different sites around the phantom model. The feasibility of this thermoregulatory technique was confirmed by its ability to provide thermal equilibrium. Further investigations to improve the design of thermoregulatory system are necessary including temperature transfer element and power consumption based on thermal capacity and thermal inertia of the residual limb. The smart thermoregulatory system by providing thermal equilibrium between two sides of a prosthetic silicone liner can control residual limb skin temperature and sweating. Consequently, it can improve quality of life in amputee people.
  • Challenges to recruitment for the career development sector

    Neary, Siobhan; International Centre for Guidance Studies (iCeGS) (Career Development Institute, 2018-10)
    In spring 2018 the Career Development Institute (CDI) together with the International Centre for Guidance Studies (iCeGS) at the University of Derby undertook research with employers in the career development sector to assess current workforce needs. This was prompted by anecdotal evidence suggesting a shortage of careers professionals and challenges to recruitment in many areas of the UK. This research suggests that pay and conditions, geography and access to affordable training are impacting on the skills and capability of the sector.
  • Yaoundé-like virus in resident wild bird, Ghana

    Williams, Richard A. J.; Vázquez, Ana; Asante, Ivy; Bonney, Kofi; Odoom, Shirley; Puplampu, Naiki; Ampofo, William; Sánchez-Seco, María Paz; Tenorio, Antonio; Peterson, A. Townsend; University of Kansas Biodiversity Institute, 1345 Jayhawk Blvd, Lawrence, Kansas, USA; Departamento de Zoología y Antropología Física, Complutense Universidad, Madrid 28040, Spain; Centro Nacional de Microbiología, Institute of Health Carlos III, Majadahonda, Spain; Noguchi Memorial Institute for Medical Research, Accra, Ghana (Academic journals, 2012-03-09)
    Tissue and swab samples from 551 wild birds collected in Ghana (October-November 2007) were assayed for alphaviruses, flaviviruses, and influenza A viruses using polymerase chain (PCR) techniques. One pool sample tested positive for Flavivirus RNA; further testing revealed that the amplified sequence was Yaoundé virus (YAOV), or closely related to it. YAOV is an apparently rare Flavivirus closely related to medically important human pathogens Japanese Encephalitis virus and West Nile virus. It is known only from West Africa. This is the first detection from Ghana, and only the second detection from a bird. Samples were negative for alphaviruses and Influenza A virus.
  • Avian influenza infections in non-migratant land birds in Andean Peru

    Williams, Richard A. J.; Segovia-Hinostroza, Karen; Ghersi, Bruno M.; Gonzaga, Victor; Peterson, A. Townsend; Montgomery, Joel M.; Biodiversity Institute, 1345 Jayhawk Blvd., University of Kansas, Lawrence, Kansas 66045, USA; Departamento de Zoologı´a y Antropologıa Fısica, Universidad Complutense de Madrid, C/Jose Antonio Novais, 2 Ciudad Universitaria, 28040 Madrid, Spain; Facultad de Medicina Veterinaria de Universidad Nacional Mayor de San Marcos, Av. Circunvalacion Cdra. 28 San Borja, Lima, Peru; United States Naval Medical Research Center Detachment, Unit 6, Av. Venezuela Cdra. 36, Callao 2, Lima, Peru (Wildlife Disease Association, 2012-06-13)
    As part of ongoing surveillance for avian influenza viruses (AIV) in Peruvian birds, in June 2008, we sampled 600 land birds of 177 species, using real-time reverse-transcription PCR. We addressed the assumption that AIV prevalence is low or nil among land birds, a hypothesis that was not supported by the results—rather, we found AIV infections at relatively high prevalences in birds of the orders Apodiformes (hummingbirds) and Passeriformes (songbirds). Surveillance programs for monitoring spread and identification of AIV should thus not focus solely on water birds.
  • Are shocks to natural gas consumption temporary or permanent? Evidence from a panel of U.S. states

    Apergis, Nicholas; Loomis, David; Payne, James; University of Piraeus; Illinois State University; Illinois State University (Elsevier, 2010-08)
    This short communication examines whether or not U.S. natural gas consumption follows a stationary process. Unlike previous research that has focused on regional country or industrial sector-based panel studies, this study undertakes a sub-national investigation of natural gas consumption for the 50 U.S. states. Levin et al. (2002), Im et al. (2003), Maddala and Wu (1999), and Hadri (2000) panel unit root and stationarity tests reveal that natural gas consumption is integrated of order one. However, once allowance is made for endogenously determined structural breaks, the Carrion-i-Silvestre et al. (2005), Im et al. (2005), and Westerlund (2005) panel unit root and stationarity tests indicate that natural gas consumption is integrated of order zero. Discussion of the structural breaks is briefly surveyed in relation to the natural gas industry’s response to legislative actions.
  • 'An Asseblage of Habits' : D.J. Waldie and Neil Campbell - A Suburban Conversation

    Neil Campbell; University of Derby (2011)
    I edited this special edition on western suburbia, selected the images and interviewed the writer D.J. Waldie for the journal.
  • Food price volatility and macroeconomic factor volatility: 'heat waves' or 'meteor showers'?

    Apergis, Nicholas; Rezitis, Antonios; University of Ioannina; University of Ioannina (Taylor & Francis, 2010-10-06)
    This paper investigates volatility spillover effects between relative food prices and explicit macroeconomic fundamentals, i.e. exchange rates, money balances, inflation, and the deficit to income ratio, through the methodology of GARCH models. The findings showed that significant and positive macroeconomic volatility effects influence the volatility of relative food prices. Moreover, the volatility of relative food prices exerts a positive and statistically significant impact on its own volatility. The results imply that the participation of Greece in EMU will diminish the volatility of those macroeconomic factors, implying lower volatility in food prices and thus higher benefits for both producers and consumers.
  • International technology spillovers, human capital and productivity linkages: evidence from the industrial sector

    Apergis, Nicholas; Economidou, Claire; Filippidis, Ioannis; University of Piraeus; University of Utrecht; Aristotelian University of Thessaloniki (Springer, 2009-11)
    The paper estimates an empirical model that is consistent with a variety of Research and Development (R&D)-driven models of growth where technology is transmitted via trade to other industries, both domestically and internationally, by being embodied in differentiated intermediate goods. The evidence is based on data from 21 manufacturing industries in six European Union countries for the period 1980–1997. The contribution of the paper lies in showing how by including human capital in the model and employing suitable econometric procedures the magnitude of R&D spillovers reported in the existing literature can be affected, while pointing to a major role of human capital in economic growth process.
  • The emissions, energy consumption, and growth nexus: Evidence from the commonwealth of independent states

    Apergis, Nicholas; Payne, James; University of Piraeus; Illinois State University (Elsevier, 2010-01)
    This study examines the causal relationship between carbon dioxide emissions, energy consumption, and real output within a panel vector error correction model for eleven countries of the Commonwealth of Independent States over the period 1992–2004. In the long-run, energy consumption has a positive and statistically significant impact on carbon dioxide emissions while real output follows an inverted U-shape pattern associated with the Environmental Kuznets Curve (EKC) hypothesis. The short-run dynamics indicate unidirectional causality from energy consumption and real output, respectively, to carbon dioxide emissions along with bidirectional causality between energy consumption and real output. In the long-run there appears to be bidirectional causality between energy consumption and carbon dioxide emissions.
  • Financial Deepening and Economic Growth Linkages: A Panel Data Analysis

    Apergis, Nicholas; Fillipidis, Ioannis; Economidou, Claire; University of Piraeus; University of Piraeus; University of Utrecht (Springer, 2007-04)
    The paper examines whether a long-run relationship between financial development and economic growth exists employing panel integration and cointegration techniques for a dynamic heterogeneous panel of 15 OECD and 50 non-OECD countries over the period 1975–2000. Three different measures of financial deepening are used to capture the variety of different channels through which financial development can affect growth. Our findings support the existence of a single long-run equilibrium relation between financial deepening, economic growth and a set of control variables. Further, the evidence points to a bi-directional causality between financial deepening and growth.
  • Total Factor Productivity and Monetary Policy: Evidence from Conditional Volatility

    Apergis, Nicholas; Miller, Stephen; University of Piraeus; University of Nevada Las Vegas (Wiley, 2007-08-14)
    This paper empirically assesses whether monetary policy and its volatility affect real economic activity through their effect on the aggregate supply side of the macroeconomy. Analysts typically argue that monetary policy either does not affect the real economy (the classical dichotomy) or only affects the real economy in the short run through aggregate demand (new Keynesian or new classical theories). Real business cycle theorists try to explain the business cycle with supply‐side productivity shocks. We provide some preliminary evidence about how monetary policy and its volatility affect the aggregate supply side of the macroeconomy through their effect on total factor productivity and its volatility. Total factor productivity provides an important measure of supply‐side performance. The results show that monetary policy and its volatility exert a positive and statistically significant effect on the supply side of the macroeconomy. Moreover, the findings buttress the importance of reducing short‐run swings in monetary policy variables as well as support the adoption of an optimal money supply rule. Our results also prove consistent with the effective role of monetary policy during the so‐called ‘Great Moderation’ in US gross domestic product volatility beginning in the early 1980s.
  • Renewable energy consumption and economic growth: Evidence from a panel of OECD countries

    Apergis, Nicholas; Payne, James; University of Piraeus; Illinois State University (Elsevier, 2010-01)
    This study examines the relationship between renewable energy consumption and economic growth for a panel of twenty OECD countries over the period 1985–2005 within a multivariate framework. Given the relatively short span of the time series data, a panel cointegration and error correction model is employed to infer the causal relationship. The heterogeneous panel cointegration test reveals a long-run equilibrium relationship between real GDP, renewable energy consumption, real gross fixed capital formation, and the labor force with the respective coefficients positive and statistically significant. The Granger-causality results indicate bidirectional causality between renewable energy consumption and economic growth in both the short- and long-run.
  • Testing Purchasing Power Parity: results from a new foreign exchange market

    Apergis, Nicholas; University of Ioannina (Taylor & Francis, 2010-10-06)
    This study examines whether the Purchasing Power Parity hypothesis holds in the foreign exchange market of Armenia, following the initiation of an independent foreign exchange market, after the country seceded from the Soviet Union and the rouble zone in 1993. OLS and highly efficient unit root tests provide results suggesting that PPP fails to hold both in the short-run and in the long-run, respectively. In addition, variance decompositions justify - in terms of the Balassa-Samuelson effect - why in the long-run the PPP is rejected by identifying real shocks as the main determinant of the Dram real exchange rate.
  • FINANCIAL STRUCTURE AND INDUSTRIAL STRUCTURE

    Apergis, Nicholas; Antzoulatos, Angelos; Tsoumas, Chris; University of Piraeus; University of Piraeus; University of Piraeus (Wiley, 2010-10-12)
    This paper explores the relationship between financial structure and industrial structure in a panel cointegration framework, using annual data for 29 countries and 28 industrial sectors for the period 1990–2001. The results indicate that financial structure is to a significant extent related to industrial structure in the long run, yet their relationship is partly consistent with the industrial sectors' technological orientation postulated by the theoretical literature. It is in line, however, with the so‐called ‘financial services view’ that stresses the importance of a well developed financial system for growth, irrespective of its structure. In addition, the results indicate that financial structure does not seem to play a role in a sector’s performance relative to GDP.
  • Integration properties of disaggregated solar, geothermal and biomass energy consumption in the U.S.

    Apergis, Nicholas; Tsoumas, Chris; University of Piraeus; University of Piraeus (Elsevier, 2011-09)
    This paper investigates the integration properties of disaggregated solar, geothermal and biomass energy consumption in the U.S. The analysis is performed for the 1989–2009 period and covers all sectors which use these types of energy, i.e., transportation, residence, industrial, electric power and commercial. The results suggest that there are differences in the order of integration depending on both the type of energy and the sector involved. Moreover, the inclusion of structural breaks traced from the regulatory changes for these energy types seem to affect the order of integration for each series.

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