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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.

Although most aetiological theories of crime assume that offenders are a distinct subset of the population, there is evidence that many illegal acts are committed by people who have no convictions and are therefore not regarded as criminals. The question consequently arises as to whether there are aspects of illegal actions that set convicted offenders apart. The paper aims to discuss these issues.

To answer this, a 45-item self-report questionnaire was administered to two samples (males 15-29 years): 185 prisoners and 80 young men without convictions.

The results draw attention to a distinguishing psychological dimension of instrumentality operating across the range of offence forms. Convicted offenders are more likely to commit crimes for direct gratification with intent when compared with the sorts of illegal activities that non-convicted respondents report they have done.

Careful matching of convicted criminals and those without convictions is extremely difficult. Future research that explores other non-criminal samples would therefore be of value.

Interventions with people who commit crimes need to carefully distinguish between those who are determined criminals and those whose activities are more likely to be part of an opportunistic culture.

The results challenge conceptualisation of criminals and criminality as something always distinct from those without convictions. It thus has implications for what theories of crime should seek to explain. The significance of instrumentality also give further force to the legal emphasis on men's area.

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.

The purpose of this paper is to examine knowledge-creating interaction in developing an innovation in a multidisciplinary research community with hermeneutic phenomenology, to understand how previous experiences and future prospects shape the process and to examine the circumstances, which support or limit knowledge creation.

The approach of this study is phenomenological and the empirical case study has been conducted using ethnography. The data consist of field notes, videos, interviews and documents of a BCDC energy consortium, developing energy weather forecast (EWF) in a new type of research environment.

The results indicate that the role of actual interactive events was crucial in the development of EWF. Hermeneutic approach illustrated that the roots of that event were in the past experiences of the participants and the circumstances, which promoted the development of the innovation, but the acknowledgment of the future prospects was crucial in finalizing the process. The role of a leader organizing the interaction and collaborative work was also substantial.

The results of this study could be used to plan and organize knowledge creation processes in organizations, especially in universities and research communities, striving to create multidisciplinary research environments and practices.

This study proposes a new approach based on hermeneutic phenomenology to examine it in a unified way, by focusing on the key aspects of elements affecting knowledge-creating interaction.

The purpose of this paper is to study an innovative rice value chain financing system (VCFS) established in Benin, to identify the determinants of producers and processors access to formal credit, both at intensive and extensive margins. It focuses on multi-stakeholder platforms (MSP) which connect producers and processors in need of credit to potential financial lenders.

The empirical analysis uses rich cross-sectional survey data collected in Northern Benin in 2018. The sample consists of 215 rice producers and 217 rice processors randomly selected through a multi-stage sampling and interviewed with structured questionnaires. The empirical models analyze the determinants of the likelihood to receive a credit and the amount of credit received. To account for the sample selection and censored nature of the main outcome variable, the study considers a Heckman two-stage model coupled with a Tobit model for robustness checks.

The study finds that the MSP are effective in increasing access to formal credit and the amount borrowed. Producers and processors who are members of the MSP are more likely to receive credit and, conditional on being approved for credit borrower, a larger amount. Other key factors that significantly explain access to credit include the use of soft guarantee for securing a loan, the degree of participation in the platform and demographic characteristics. These findings are consistent across the Heckman and Tobit models.

The study attempts to rigorously analyze the factors explaining producers and processors access to credit using cross-sectional survey data. But it has some limitations. The main limitation is the type of data used. Ideally, one would like to run a randomized control trial (RCT) to randomly assign participation in the MSP to causally estimate its impact of access to credit. The second-best option would be to have a panel data covering the period before and after the establishment of the platform. However, in the absence of an RCT or panel data, the study resorts to cross-sectional data and empirical models that account for sample selection bias and the censored nature of the credit received.

One of the key findings of the study is that participation in the MSP (through different value chain stages associations) increases access to formal credit. This highlights an important and effective mechanism, a well-coordinated value chains that integrated lenders, that policymakers can leverage to facilitate access to credit in the agricultural sector.

Access to credit is important to boost agricultural productivity and income. Hence, the findings of the study have social implications in terms of poverty reduction in rural areas.

The study contributes to earlier theories and empirical studies on the demand for credit. It focuses on an innovative VCFS, increasingly adopted in many developing countries, adds originality and value to the understanding of mechanisms to unlock agricultural actors’ access to credit in low-income countries.

The objective of software development is to produce accurate, efficient, easily maintainable systems which perform reliably and meet the users' needs as effectively as possible. However, this objective is still not being achieved in most installations. During the last ten years many good methodologies for programming have been introduced and it is generally agreed that the use of almost any of these solves most, if not all, of the problems encountered during programming. But methodologies for commercial systems design have not become so well established, although it is generally recognised that many systems are poorly designed and that this causes problems in later development stages and subsequent maintenance. The design problem has been highlighted since programming has improved so much through the use of new techniques.

We theoretically identify two levels of agency conflicts related to foreign direct investment (FDI): within a parent firm and between parent(s) and an affiliated firm. For a sample of 182 firms that announced U.S.‐related FDIs in 1995, we examine the effects of agency conflicts on the choice between a wholly owned subsidiary (WOS) and a joint venture (JV), and the relative share ownership of a parent. Firms with higher management ownership, especially the firms that made related FDIs, and firms with higher foreign affiliate monitoring efficiency are more likely to choose a WOS. Differences between U.S. and non‐U.S. parents are also examined.

Twenty years before Sherlock Holmes donned his deerstalker and informed Watson that “the game's a‐foot!” an American woman, Seely Regester, pub‐lished a mystery entitled The Dead Letter (1867).

THIS report gives a general solution of the problem of the calculation of the Glauert loading of wings with discontinuities of incidence. The three existing variations of the original theory, the Glauert solution, the Gates' least squares solution, and the Lotz' solution, are not entirely satisfactory and may involve a considerable amount of labour. The present solution divides the Fourier series representing the circulation into two parts: (a) a standard solution representing the discontinuities, which includes the slowly convergent part of the solution, and which is expressible as a precise infinite series dependent only upon the position of discontinuities along the span, and (b) a secondary solution due to plan form, aspect ratio, slope of section lift curve, and so on, which is the quickly convergent part of the solution and usually requires a terminated scries of only from four to six terms. Once the standard solution has been computed, the remaining work is little more than for the standard Glauert solution for a flat wing.

Managers are constantly making decisions that affect profit. One of the decision‐making areas which is crucial to all managers concerns profit planning. Attempts to show how cost‐volume‐profit (CVP) analysis, aided by the computer spreadsheet, can be applied to the practical profit planning situation in the hospitality industry. Paradoxically, CVP analysis is one of the most widely referred to techniques in managerial accounting, but all too often it is not used to its full potential in the operating environment. Aims at encouraging greater use of the CVP approach to hospitality profit planning.