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The purpose of this paper is to describe how a discrete element model is used to predict the penetration depth and the perforation caused by a non‐deformable missile against a thin reinforced concrete slab.

Initial calibration of the model was done with a series of flat‐nose missile tests. Additional simulations were performed with varying the percentage of reinforcement. The present numerical model is compared to experimental test data provided by the French Atomic Energy Agency (CEA) and the French Electrical Power Company (EDF).

For thin concrete slabs, the evolution of the penetration depth in terms of percentage of reinforcement was compared with experimental results: quantitatively the results are very coherent.

The modeling scale is higher than the heterogeneity scale, so the model may be used to simulate real structures, which means that the discrete element method is mainly used here for its ability to account for discontinuities; an identification process based on quasi‐static tests is used, so the quasi‐static behavior of concrete is reproduced. This identification process is the key point, to allow a complete predictive computation for complex impact configurations, especially when the missile diameter and the thickness of the concrete slab are on the same order in size.

This research explores to answer the question: What accounts for the substantial underwriting losses in the Ghanaian insurance industry?

Thirty-four (34) insurers' audited financial reports covering the period of 2007 to 2017 were analysed through dynamic panel regression to uncover the underlying causes of high underwriting losses in the Ghanaian insurance industry.

The findings indicate that efforts at increasing market share by overtrading add no value to insurers underwriting profitability. The underwriting risk suggests that the industry charges disproportionately too small premiums for the risks it underwrites. This may indicate under-pricing by some insurers to grow their customer base.

The findings have implications for managerial efficiency and risk management structures that align compensation with underwriting efficiency.

The association between managerial preference and the underwriting performance of insurers in emerging markets has rarely been researched. This study responds to this knowledge challenge.

The importance of the market for corporate control as a disciplining device has received considerable research interest in recent years. Since the advent of event study methodology pioneered by Fama, Fisher, Jensen and Roll (1969), and the availability of machine readable returns data from the Center of Research on Security Prices, the effects of various control related corporate events have been well documented. Jensen and Ruback (1983) in their review of the empirical literature on the market for corporate control report that the findings in general support the hypothesis that outside takeover mechanisms do act efficiently to limit managerial departures from the objective of maximising the economic well‐being of its shareholders. They further point out that studies using the event study methodology cannot distinguish between the different sources of gains in the takeover process, namely those due to synergies, or those due to lack of efficient management in the acquired firm.

This study aims to examine the asymmetric effects of energy efficiency on employment in India. Instead of relying on partial factor energy efficiency measures, this study uses a total factor energy efficiency (TFE) measure to estimate sector-specific energy efficiency for empirical investigation.

Multi-sectoral panel data for India from 2000 to 2014 are considered for empirical estimation. The sector-specific energy efficiency estimates (using the TFE measure) are estimated in the initial stage using the stochastic frontier approach (SFA). Then the asymmetric effect of energy efficiency on employment is investigated by using a non-linear panel autoregressive distributed lag model.

The estimates of energy efficiency display that there is not much significant change in the trend of average energy efficiency over the period. The negative and statistically significant value of the error-correction term confirms the existence of asymmetric cointegrating relationship between energy efficiency and employment in India. Moreover, in the empirical findings, the positive and negative shocks in energy efficiency provide a long-run asymmetric and short-run symmetric effect on employment in India.

Rather than depending on the absolute measure of energy efficiency (energy to output ratio), this study estimates the sector-specific energy efficiency for India using panel SFA, which provides a relative measure of energy efficiency. Moreover, to the best of the authors’ knowledge, it is the first empirical study investigating the asymmetric impact of energy efficiency on employment at an aggregate level in developing countries like India. By contrast, previous studies have either concentrated on the symmetric effect of energy efficiency on employment or primarily restricted to developed countries.

As part of Quartet, a research project funded by the British Library, University College London (UCL) has been investigating the use of digital telephone networks for document delivery. The system will facilitate the transmission of electronically encoded documents, such as scientific journal articles, usually in facsimile image format, from a central archive to a requesting client, and the intention is to investigate the technical and economic viability of basing such a system on ISDN (Integrated Services Digital Network). Present experiments involve the use of Group IV Telefax across IDA, British Telecom's prototype ISDN network, and Megastream links between UCL and the British Library's Document Supply Centre at Boston Spa (near York). This paper is based on a talk given to the UK Online Users Group at Aslib, London, in November 1987.

Libraries need to develop information processing systems for evaluation, budgeting, planning, and operations. Electronic spreadsheets lend themselves to a variety of applications, but are time‐consuming to create. A model template and macros that can be used in many different types of library data analysis have been developed here. The procedures demonstrated here can build an essential set of tools for meeting fundamental goals of administrative efficiency, effective use of library resources, staff motivation, and rational policy making.

This paper aims to build a novel model and approach that assist an aircraft MRO procurement and overhaul management problems from the perspective of aircraft maintenance service provider, in order to ensure its smoothness maintenance activities implementation. The mathematical model utilizes the data related to warehouse inventory management, incoming customer service planning as well as risk forecast and control management at the decision-making stage, which facilitates to alleviate the negative impact of the uncertain maintenance demands on the MRO spare parts inventory management operations.

A stochastic model is proposed to formulate the problem to minimize the impact of uncertain maintenance demands, which provides flexible procurement and overhaul strategies. A Benders decomposition algorithm is proposed to solve large-scale problem instances given the structure of the mathematical model.

Compared with the default branch-and-bound algorithm, the computational results suggest that the proposed Benders decomposition algorithm increases convergence speed.

The results among the same group of problem instances suggest the robustness of Benders decomposition in tackling instances with different number of stochastic scenarios involved.

Extending the proposed model and algorithm to a decision support system is possible, which utilizes the databases from enterprise's service planning and management information systems.

A novel decision-making model for the integrated rotable and expendable MRO spare parts planning problem under uncertain environment is developed, which is formulated as a two-stage stochastic programming model.

This study aims to explore how two Norwegian national online newspapers, Dagbladet and Aftenposten, have framed halal food in the past 6 years (2008-2014), a period conflating with a rise in Muslim demographics in Norway.

A mixed-methods approach is used. Employing among others a Hallidayan transitivity analysis and other approaches from critical discourse analysis (CDA), clausal semantic structures, collocations and nominalizations were explored with a view toward fleshing out ideological significance. Particular attention was given to the neologism – “covert-Islamization” – popularized by the populist right-wing Progress Party.

The findings reveal that Dagbladet refracts halal food through a discourse of crime and other dubious frames tapping into topoi of Islamophobia. Halal is, in this manner, transformed into a synecdoche for deviance. This is contrasted with Aftenposten’s more “halal-friendly” gaze which inter alia is attributed to greater access for Muslim contributors (over 40 per cent), with nearly all authorship penned in the aftermath of the Breivik massacre of July 22, 2011.

As a comparative research that explores two newspapers – albeit with substantial national circulation – there are obvious limitations. Future research could explore the contents of Verdens Gang, the biggest newspaper in Norway, and perhaps incorporate iconic semiotic content.

The prevalent media discourse on halal in Norway casts a shadow over a fundamental aspect of the identity construction of Norwegians who adhere to Islam, thus highlighting issues of belonging and citizenry in the “new” Norway. National discourses of identity and belonging impact upon the Muslim consumer’s perception of self and ethnicity, and how these perceptions are negotiated in the interstices of a skewed media coverage of halal certainly serves to undermine this self-perception.

Several recent studies have broached the subject of the manifold representations of Muslims and Islam in the media using a CDA, but there is a dearth in studies with a specific focus on halal food. This study contributes to the lacuna in the literature in an area of growing importance, not just as a socio-political and religious phenomenon, but a lucrative commercial project in a Scandinavian context.

This paper attempts to examine which theory is best at explaining the geographic concentration in Java, an island in which most of the Indonesia’s large and medium manufacturing industries have located overwhelmingly. Our previous studies on Java have found that there was a stable – albeit increasing trend – and persistent geographic concentration in Java over the period 1976‐1995. Yet some critical questions exist: Why geographic concentration in Java persisted during this period? To what extent relevant theories and empirical literature can be used as an explicit test of competing theories on agglomeration forces? In answering those questions, we compare the three major grand theories of geographic concentration: Neo‐Classical Theory (NCT), New Trade Theory (NTT) and New Economic Geography (NEG). Using the regional specialization index as a measure of geographic concentration of manufacturing industry and pooling data over the period 1991‐002, our econometric analysis integrates the perspectives of industry, region (space) and time. We further explore the nature and dynamics of agglomeration forces underpinning the industrial agglomeration in Java by testing some key variables. Our econometric results rejected the NCT hypotheses and showed that the NTT and NEG can better explain the phenomena. It’s apparent that manufacturing firms in Java seek to locate in more populous and densely populated areas in order to enjoy both localization economies and urbanization economies, as shown by the significance of scale economies and income per capita. The former is associated with the size of a particular industry, while the latter reflects the size of a market in a particular urban area. More importantly, the results suggest that there is a synergy between thickness of market and agglomeration forces. The interplay of agglomeration economies is intensified by the imperfect competition of Java’s market structure. We find that Java’s market structure may restrict competition so that firms tend to concentrate geographically. Instead of providing some important recommendations for local and central governments and practical implications for investors and manufacturing firms, this paper gives empirical evidence with respect to path dependency hypothesis. The finding supports the NEG’s belief that history matters: older firms tend to enhance regional specialization.

This study aims to conceptually propose and empirically validate a path perspective on the servitization process of manufacturing firms. It identifies a customer and an outcome path to servitization, sheds light on the pivotal role of digital technology usage for both value-creating paths and explores their financial and relational performance outcomes.

The authors use a mixed-method approach, combining a qualitative study with a cross-sectional survey in the USA, the UK and Germany.

Manufacturing firms choose between two generic paths to servitization, a customer and an outcome path. Digital technology usage is equally important for both value-creating paths. Progress on the outcome path has a positive effect on firms’ financial performance, whereas the customer path has an indirect effect only, fully mediated by firms’ relational performance. Customer tenure and customer’s open-mindedness are contingency variables in the digital technology usage – servitization path – firm performance framework.

A path perspective is useful to conceptualize the servitization processes in manufacturing industries. Future research should investigate the sequential choice of servitization paths and explore its drivers and performance outcomes.

To create and claim superior value for their customers, managers can choose between two servitization paths, leading to differential performance outcomes. While digital technology usage is key to progress on both paths, it is particularly effective for newly acquired customers on the customer path. Suppliers should target their value-creating service offerings at open-minded customer firms to reap their full performance potential.

Propose and empirically validate a path-perspective on servitization. Understand the pivotal importance of digital technology usage for both servitization paths.