A model for projecting flight delays during irregular operation conditions

On-time performance of airlines schedule is key factor in maintaining current customer satisfaction and attracting new ones. This requires management of the different operation resources (crew/aircraft) to ensure their on-time readiness for each flight in the planned schedule. However, flight schedules are often subjected to irregularity. In particular, weather accounts for nearly 75% of system delays. Due to the tight connection among airlines resources, these delays could dramatically propagate over time and space unless the proper recovery actions are taken. This paper presents a model which projects flight delays and alerts for possible future breaks during irregular operation conditions. The results of applying the model at the operation control center of a major airlines company in the US are presented.     

The decision to finance account receivables: the factoring option

Factoring is a financial service enabling enterprises to sell their accounts receivable to a factoring company in exchange for cash. The market for factoring in the UK has been growing at substantial rates and most banking institutions are now actively involved in providing this service. Little research on the factoring market currently exists and so this paper'seeks to profile the determinants influencing decision making in the UK factoring industry. Using data from an interview‐based survey, this paper establishes that the decision to purchase an enterprise's accounts receivable is influenced by the enterprise's size, type of product or service it offers, industry, sector, age, type of customers, financial statement, the management team, operational suitability, collectability and credit notes. Copyright © 2002 John Wiley & Sons, Ltd.     

Fast‐Expanding Markets: The Revolution of the Microeconomy

Where will we find growth opportunities ? the kind that will take our businesses to the next level? The usual and popular choice of terms we use when looking at current markets and potential ones often include developed markets and emerging economies. These terms have inspired a new golden age of racing to the new treasure hidden in the capacities of these markets. Based on the seminal concept of “fast‐expanding markets,” this article discovers growth as residing at a new level, capable of redefining geographies and territories, often untapped or unnoticed by the most conventional macroeconomic analysis. © 2015 Wiley Periodicals, Inc.     

The value of rents and the likelihood of conflicts

This paper extends the prey–predator model of Grossman and Kim (J Political Econ 103:1275–1288, 1995) to analyze the relation between the value of a contested rent and the emergence of conflict. We show that an increase in the value of the rent makes a conflict equilibrium more likely. We also analyze the case where the valuation of the rent is different for the two players. We find, for example, that a conflict equilibrium may occur even though the predator has an important disadvantage in warfare. That is when his valuation of the rent is sufficiently high compared to that of the prey.

An Agreement Index with Respect to a Consensus Preorder

In this paper, we propose an index to measure the agreement level of an individual preorder with respect to a collective preorder (or reference preorder). The originality of the proposed index consists in the two following facts: (i) it quantifies the agreement level between two preorders which are not necessarily complete (i.e. they may include the incomparability relation), a preference system rarely tackled in the literature and (ii) it takes into account the positions of the alternatives in the individual preorder. The proposed index is then used to compute, within the framework of a consensus preorder research, the agreement level of all group’s members with respect to a collective preorder.     

How strong is the global integration of emerging market regions? An empirical assessment

This paper attempts to evaluate the time-varying integration of emerging markets from a regional perspective based on a conditional version of the International Capital Asset Pricing Model (ICAPM) with DCC-GARCH parameters that allows for dynamic changes in the degree of market integration, global market risk premium, regional exchange-rate risk premium, and local market risk premium. Our findings reveal several interesting facts. First, the time-varying degree of integration of four emerging regions under consideration, satisfactorily explained by the regional level of trade openness and the term premium of US interest rates, has recently tended to increase, but these markets still remain substantially segmented from the world market. Second, the local market risk premium is found to explain more than 50% of the total risk premium for emerging market returns. Finally, we show that conditional correlations usually underestimate and overstate the measure of time-varying market integration. The empirical results of this study have some important implications for both global investors and policymakers with respect to dedicated portfolio investments in emerging markets and policy adjustments.     

Hedging and diversification across commodity assets

ABSTRACT

We investigate the conditional cross effects and volatility spillover between equity markets and commodity markets (oil and gold), Fama and French HML and SMB factors, volatility index (VIX) and bonds using different multivariate GARCH specifications considering the potential asymmetry and persistence behaviours. We analyse the dynamic conditional correlation between the US equity market and a set of commodity prices and risk factors to forecast the transmission of shock to the equity market firstly, and to determine and compare the optimal hedge ratios from the different models based on the hedging effectiveness of each model. Our findings suggest that all models confirm the significant returns and volatility spillovers. More importantly, we find that GO-GARCH is the best-fit model for modelling the joint dynamics of different financial variables. The results of the current study have implications for investors: (i) the equity market displays inverted dynamics with the volatility index suggesting strong evidence of diversification benefit; (ii) of the hedging assets gold appears the best hedge for the US equity market as it has a higher hedge effectiveness than oil and bonds over time; and (iii) despite these important results, a better hedge may be obtained by using well-selected firm sized and profitability-based portfolios.     

Stressors,Coping Mechanisms,Perceived Supervisory Support,and Well-Being Among Nurses During Accreditation Surveys: a Study from UAE

Employee Responsibilities and Rights Journal - Organizational psychology applies psychological theories to improve the physical and mental well-being of employees, increase productivity, and...     

Disclosure quality vis-à-vis disclosure quantity: Does audit committee matter in Omani financial institutions?

Review of Quantitative Finance and Accounting - We examine the impact of audit committee (AC) characteristics (e.g. AC foreign members, AC female members, AC members with multiple directorships, AC...     

Regulatory Policy and the Efficiency of the Banking Sector in Australia

This paper examines the technical efficiency of Australian banks during the post‐Wallis period (1997–2005). The results based on data envelopment analysis reveal that the extent of technical efficiency varies across the banks and over the years. The National Australia Bank, Commonwealth Bank and Macquarie Bank are found to be technically efficient, whereas Adelaide Bank, the Bank of Queensland and Westpac Bank are found to be prominently inefficient. Technical efficiency is the lowest among small banks and has declined over time largely due to deterioration in scale efficiency. Medium‐sized banks have outperformed both the small and large banks in terms of efficiency improvements. Some insights into the debate over the removal of the ‘four‐pillar’ policy are provided.