Optimal safety stock levels of subassemblies and manufacturing components

In order to control the time to market and manufacturing costs, companies produce and purchase many parts and components before receiving customer orders. Consequently, demand forecasting is a critical decision process. Using modular product design and super bills of materials are two effective strategies for developing a reliable demand forecasting process. They reduce the probability of stockouts in diversified production contexts. Furthermore, managing and controlling safety stocks for pre-assembled modules provide an effective solution to the problem of minimizing the effects of forecast errors. This paper develops, evaluates, and applies innovative cost-based analytical models so that the optimal safety stock of modular subassemblies and components in assembly to order and manufacturing to order systems, respectively, can be rapidly quantified. The implementation of the proposed models in two industrial case applications demonstrates that they significantly reduce the safety stock inventory levels and the global logistical cost.     

The Impact of Gender Similarity on Employee Satisfaction at Work: A Review and Re‐Evaluation*

abstract We used data from the British 1998 Workplace Employee Relations Survey (WERS98) to examine key unanswered questions about the impact of gender similarity on employee satisfaction at work. The study sample consisted of 11,848 men and 11,278 women from over 1700 workplaces across Britain. In line with gender‐specific compositional arguments, the effects of gender similarity were found to be asymmetrical for men and women, with similarity tending to have a greater positive impact on men than on women. The effects involved were primarily linear in nature. Net of the potentially confounding influence of other factors, they were also found to be quite weak, weaker than has commonly been suggested in the literature.     

Italian consumer awareness of layer hens' welfare standards: a cluster analysis

Animal welfare has assumed in recent years an increasing significance for European consumers, becoming part of the Community Agricultural Policy strategy that encourages farmers to achieve higher standards of animal welfare. Undoubtedly, the superior social sensitivity towards animal welfare has produced over time notable changes within European Union (EU) Policy. However, while EU legislation has progressively focused on granting animals better possibilities to express their behavioural repertoire, recent analysis shows that consumer knowledge of animal welfare compulsory standards is still quite limited. Drawing on the results of a direct survey on 300 Italian food shoppers, our research analyses consumer knowledge of the welfare standards of laying hens. Our findings highlight important market opportunities and policy implications. Our research shows that, although the majority of the sample expressed concern on hen husbandry systems, most of respondents were unaware of the current mandatory labelling system for eggs. Through cluster analysis three segments were found: the inactive consumer cluster, the conflicted consumer cluster and the ethically competent consumer cluster. This segmentation is especially valuable for producers of ‘animal‐friendly’ eggs to identify market opportunities and formulate appropriate marketing strategies.     

Incorporating financial market volatility to improve forecasts of directional changes in Australian share market returns

Financial Markets and Portfolio Management - This study examines whether incorporating volatility improves the forecast of directional changes in the returns of Australia’s banking,...     

The influence of entrepreneurs’ immigrant status and time on the perceived likelihood of exporting

We contribute in this paper to the scant literature on the factors and conditions influencing the development of different perceptions of potential international opportunities for immigrant and native entrepreneurs in the pre-internationalization phase. Specifically, we investigate what factors influence the perceived likelihood entrepreneurs have of exporting. Building on entrepreneurial intentions and opportunity-based entrepreneurial processes, we propose a cognitive account of perceived likelihood of exporting based on entrepreneurs’ perceptions of the desirability and feasibility of export opportunities. We investigate how the immigrant status (i.e., individual characteristics) and time (i.e., contextual factors) influence the relationship between the desirability and feasibility of exporting, and entrepreneurs’ perceived likelihood of exporting. We employ an experimental design on a matched-pair sample of 108 native and immigrant entrepreneurs in domestic technology-based firms. The results are a unique account of the cognitive antecedents of the perceived likelihood of exporting under different temporal conditions, comparing immigrant and native entrepreneurs. We discuss theoretical and practical implications.

     

Does partnership at work increase trust? An analysis based on the 2004 Workplace Employment Relations Survey

In the late 1990s, partnership at work was embraced with some enthusiasm by a number of stakeholders in employment relations and incorporated in the 1999 Employment Relations Act. The implementation of the Information and Consultation Regulations has also been extensively signalled. We might therefore expect to see some evidence of partnership‐related practices in Britain. The 2004 Workplace Employment Relations Survey (WERS 2004) provides an opportunity to explore the extent of partnership practice, and also, for the first time, to explore its link to trust relations. This article reports evidence from WERS 2004 suggesting that partnership practice remains relatively undeveloped and that it is only weakly related to trust between management and employee representatives and to employees’ trust in management. Direct forms of participation generally have a more positive association with trust than representative forms. There is also modest evidence that trust may be associated with certain workplace outcomes. The case for partnership and more particularly representative partnership as a basis for mutuality and trust is not supported by this evidence.     

A comprehensive view of intelligent transport systems for urban smart mobility

ABSTRACT

Information accuracy and decision-making speed are of paramount importance in managing today’s mobility of goods and people inside the city. Intelligent Transport Systems (ITS) can provide road users with updated information and forecasts on both traffic and weather conditions. The result is a higher efficiency in the use of resources and a better management of physical flows. The purpose of this paper is to conduct an in-depth review on the role of ITS supporting urban Smart Mobility, in order to identify the main gaps in the literature and propose future research streams. In total, 71 papers have been thoroughly analysed: they are mainly focused on technology, with limited attention to value creation. Even though some benefits have been examined, a general lack of quantitative models emerged. Eventually, there is a lack of contributions considering both people and freight transport, even if they are strongly related, especially in an urban environment.     

Using choice experiments to assess smallholder farmers' preferences for pig breeding traits in different production systems in North-West Vietnam

Livestock form key components of the livelihood strategies of many of the world's poorest people. However, despite the potential to alleviate poverty and improve food security through livestock development interventions, the lack of smallholders' participation in the planning and design of breeding programs has often been a major cause of the failure of such programs. Particularly in developing countries where livestock production is still mostly subsistence-oriented and livestock fulfil manifold functions a considerable number of livestock breeding programs have failed. The development of adequate tools to characterise these functions, bearing in mind that these are expressed only rarely in properly functioning markets, is therefore important.This paper seeks to advance the application of such methodologies to the smallholder pig sector in Vietnam. A choice experiment was applied across 140 households involved in pig breeding in order to assess farmers' preferences and the trade-offs for a list of adaptive and productive traits. These included growth, reproduction, disease resistance, feed requirements and appearance.The findings indicate that smallholders highly value both adaptive and performance traits, particularly in resource-driven (i.e. subsistence) production systems. Performance traits were more highly valued in the demand-driven (i.e. market-oriented) systems. These findings have implications for breeding program breed choice and breeding objectives.     

On linking microsimulation and computable general equilibrium models using exact aggregation of heterogeneous discrete-choice making agents

Our paper contributes by bridging the gap between the (partial equilibrium) microsimulation and the computable general equilibrium (CGE) approaches, by making use of exact aggregation results from the discrete choice literature: heterogeneous individuals choosing within a set of discrete alternatives may be aggregated into a representative agent with (possibly multiple-level) constant elasticity-of-substitution/transformation preferences/technologies. These results therefore provide a natural link between the two policy evaluation approaches. We illustrate the usefulness of these results by evaluating potential effects of population ageing on the dynamics of income distribution and inequalities, using a simple overlapping generations model where individuals make leisure/work decisions, and choose a profession among a discrete set of alternatives.