Transportation in disaster response operations

Disasters are extraordinary situations that require significant logistical deployment to transport equipment and humanitarian goods in order to help and provide relief to victims. An efficient response helps to reduce the social, economic and environmental impacts. In this paper, we define and formulate a practical transportation problem often encountered by crisis managers in emergency situations. Since optimal solutions to such a formulation may be achieved only for very small-size instances, we developed an efficient genetic algorithm to deal with realistic situations. This algorithm produces near optimal solutions in relatively short computation times and is fast enough to be used interactively in a decision-support system, providing high-quality transportation plans to emergency managers.     

The post-war American technological development as a military enterprise

This paper argues that the basic industrial innovations thatshaped the modern American technology was conceptualised anddeveloped as a military enterprise. The ‘military–industrial–academic’complex created a scientific-driven process of innovation aimedsimultaneously to win the cold war against the Soviet Union,to push the science frontier and to consolidate the Americanleadership in the world. After the collapse of the Soviet Unionnew initiatives and conceptions about future wars were formulated.The terrorist attack of September 11 gave a special momentumto new military questions that seem to be pushing again theAmerican science for a new wave of industrial innovations     

The quality of service desired by public transport users

This article describes the methodology used to study the quality of service desired by users of a public transport system. The desired quality is different from the perceived quality because it does not represent the daily experiences of the users, but rather what they desire, hope for or expect from their public transport system. This is why it is important to study the desired quality, knowledge of which gives local authorities the background information for personalised marketing policies based on the user’s requirements rather than their daily perceptions. The methodology goes through several stages, such as the use of focus groups to choose the most important variables for the users, the design and use of unlabelled stated preferences surveys and the calibration of discrete choice models. All of these help determine the weight of the most relevant variables. The analysis is carried out with different categories of users and potential users (those people not currently using public transport).Waiting time, cleanliness and comfort are shown to be the public transport variables that users most valued, but the degree to which they are valued varies according to the category of user. Variables such as driver kindness, bus occupancy and journey time are generally given less weight. The first two vary little by user category, but some variability appears for journey time.For potential users the more important variables when defining expected quality from public transport are waiting time, journey time and above all, level of occupancy. They consider the other variables to be of little importance when defining an efficient public transport service.In order to improve service quality and attract more passengers to public transport in general, the application of this methodology provides the authorities and operating companies with useful information to plan personalised marketing policies specifically directed at different categories of users and potential users of public transport.     

The Dynamics of Labour Flexibility: Relationships between Employment Type and Innovativeness

This paper investigates the relationship between flexible human resource (HR) practices and innovativeness. Testing the research model in a sample of first‐tier automotive suppliers indicates that internal flexibility practices are positively related to innovativeness. Regarding external flexibility, the association depends on the type of contingent employee: negative association for ‘short‐term hires’ and positive association for ‘consulting/contracting firms’. The relationships to innovativeness for practices associated with knowledge transfer are moderated by environmental dynamism, but the non‐knowledge related practices are not. Firms in highly dynamic environments can benefit more from flexible HR practices than firms in less dynamic environments.     

An Analysis of Country Image of Brazil and Its Fresh Fruits: A Two Scales Comparison

The ever-increasing trade openness has raised the importance of the country image construct. Despite the number of articles published on the image of many countries worldwide, little focus has been paid to Brazil so far. The present study is aimed at measuring the country image of Brazil and its fresh fruits by comparing two different scales, one developed by Pisharodi and Parameswaran (1992) and the other by Nebenzahl, Jaffe, and Usunier (2003). The method used was a cross-sectional one, with the survey being characterized as quantitative and involving the application of questionnaires to 223 students of the Royal Agricultural College in England. The scales yielded five and three strong correlations, respectively. The image of Brazil was found to be negative in the former scale, whereas the latter one showed a positive image. The present research has contributed not only to further the discussion on the existing gap in the literature regarding “country image” but also to provide useful information for both marketing professionals and government agencies with the aim of strengthening the image of Brazil.     

Asian development pathways and sustainable socio-technical regimes

Rapid industrialisation in Asia is generating a significant new demand for raw materials and pressure on local, regional and global environments. In the future these demands and pressures are expected to increase markedly. These concerns are models of development that assume that economic growth follows a pattern leading to a convergence between the structure, growth and productivity of economies over the long run. In these models, the structure of industries and sectors, technological capabilities and consumer preferences are regarded as converging towards patterns established in more advanced economies. By extension, convergence is also assumed to hold for the resource intensity and environmental pressure associated with growth in industrialising countries. This paper argues for greater attention to the resource and environmental quality of development. It argues that by applying ideas from an emerging literature on ‘systems innovation’ it becomes possible to envisage the emergence of new, more resource-efficient socio-technical systems as the basis of more sustainable development pathways in developing Asia. Such sustainable socio-technical systems will emerge in the context of interaction between domestic and globalised markets, knowledge flows and governance. Key issues for a research agenda are set out.     

Human resources audit

Human resource management (HRM) has experienced a strong evolution. In order to provide useful information to managers, it is necessary to evaluate the results generated by the design and implementation of personnel policies. This is the goal of the HR audit that includes two different analyses and valuations: the HR policies and their level of fit with the strategy of the firm, and the characteristics of human capital. Several criteria have been used to assess different HR policies. Nevertheless, the measurement of the value that human capital brings to the firm is a very complex topic. Consequently, different models are being presented that aim to properly solve this challenge. This paper will analyze the HR function from two perspectives: the evaluation of the implemented policies and the quality of human capital in relation to real competencies, and the capability to learn and develop new skills.     

American GARCH employee stock option valuation

We implement a flexible simulation-based approach for the fair value of employee stock option (ESO) that accounts for the vesting period, departure risk and voluntary suboptimal early exercise. We introduce GARCH effects on the underlying asset and we analyze the price bias with respect to the constant volatility case. We also perform a sensitivity analysis with respect to changes in several ESO characteristics. We compare this valuation with FAS 123 method revealing a FAS overvaluation. Finally, we value a real ESO plan providing the confidence intervals for the estimated ESO prices.     

Trading with Asymmetric Volatility Spillovers

Abstract:  We study the profitability of trading strategies based on volatility spillovers between large and small firms. By using the Volatility Impulse-Response Function of Lin (1997) and its extensions, we detect that any volatility shock coming from small companies is important to large companies, but the reverse is only true for negative shocks coming from large firms. To exploit these asymmetric patterns in volatility, different trading rules are designed based on the inverse relationship existing between expected return and volatility. We find that most strategies generate excess after-transaction cost profits, especially after very bad news and very good news coming from large or small firm markets. These results are of special interest because of their implications for risk and portfolio management.