Improving global spare parts distribution chain performance through part categorization: A case study

Spare parts inventory management is a complex problem and in most cases part categorization is needed to create a manageable number of control groups to focus management efforts more effectively. Usually multi-dimensional or multi-criteria classifications are used, and there are several examples of classification schemes available in the literature. The complexity increases even more when taking into consideration that a distribution chain consists of many parties. Thus, in addition to internal inventory control factors, external factors such as supplier performance, customer behavior and related demand patterns affect the controllability of the various parts.In the paper we try to expand existing classification schemes that cover only one part of the supply chain into a decision tool covering three sides of the chain: the company's distribution center with its internal processes, supplier with supply processes and customer with demand processes. The complexity that is created by the expanded view is reduced by considering two separate links: demand link and supply link. At first the links are analyzed separately considering the most relevant factors of each one and afterwards they are combined into a categorization matrix to classify the parts.The categorization scheme is tested in a large international company for improving its spare parts distribution chain performance. In the case company's demand link, part value and demand variability were used as the factors to create seven categories. In supply link, three categories are created by using availability risk of the material as the categorizing factor. The spare parts distribution chain performance is analyzed with service performance and stock-out cost key performance indicators before and after improvement actions. Finally, it is discussed how widely the insights from the case experience can be generalized towards developing a generic management tool for such a complex situation.     

Contractual preferences and moral biases: social identity and procedural fairness in the exclusion game experiment

Many people may suffer from moral biases when making allocation decisions having consequences to others. This means that some factors hinder people from finding, or constructing, their true social preferences in those situations. As a counterforce to this, numerous devices of moral priming have evolved—such as parenting, formal education as well as various formal and informal contracting procedures. This paper focuses on the influences of social identity and the perceived fairness of contracting procedures on subjects’ behaviour in situations of allocation decisions. The analysis of experimental data suggest, first, that males are less likely than females to engage in other-regarding behaviour in a pre-agreement situation where two active players divide an endowment among themselves and a third, passive, player. However, this difference disappeared after the joint contract of the rule of dividing the endowment was made. Second, it was found that students of economics are less likely than other students to behave in an other-regarding way before the contract; this difference remained also in decisions after the contract was made. Finally, both a random selection mechanism and a majority voting mechanism were rated fair by the majority of the subjects. However, the data suggests that fairness ratings are positively associated with compliant behavior only in the case of the majority voting mechanism.     

Subsidizing unit donations: matches,rebates, and discounts compared

Experimental Economics - An influential result in the literature on charitable giving is that matching subsidies dominate rebate subsidies in raising funds. We investigate whether this result...     

Dynamic stochastic analysis of the farm subsidy-efficiency link: evidence from France

The existing literature on the subsidy-efficiency nexus is almost exclusively based on static modelling and thus ignores the inter-temporal nature of production decisions. The present paper contributes to this literature by developing a dynamic stochastic frontier model, which is then estimated using a sample of French farms over the period 1992–2011. For comparison purposes, the static counterpart of the dynamic model is also estimated. The results indicate that, in the dynamic case as well as in the static one, public subsidies are negatively associated with farm technical efficiency. Nevertheless, these linkages are found to be weak, and they are much weaker when dynamic aspects are taken into account.     

Optimal taxation and public provision for poverty reduction

The existing literature on optimal taxation typically assumes there exists a capacity to implement complex tax schemes, which is not necessarily the case for many developing countries. We examine the determinants of optimal redistributive policies in the context of a developing country that can only implement linear tax policies due to administrative reasons. Further, the reduction of poverty is typically the expressed goal of such countries, and this feature is also taken into account in our model. We derive the optimality conditions for linear income taxation, commodity taxation, and public provision of private and public goods for the poverty minimization case and compare the results to those derived under a general welfarist objective function. We also study the implications of informality on optimal redistributive policies for such countries. The exercise reveals non-trivial differences in optimal tax rules under the different assumptions.     

The Political Economy of Occupational Family Policies: Comparing Workplaces in Britain and Germany

With a shift in the political debate to more market‐driven social policy approaches during the past decade, politicians in a number of European countries have argued that employers should take on greater responsibilities in the provision of social policy. But why should employers get involved? After reviewing the relevant literature on firm‐level social policy, we analyse the conditions and causal pathways that lead to their provision. Our findings show that (i) the skill structure and level of the workforce are important conditions for firm‐level engagement; (ii) employers have usually been the ‘protagonists’; (iii) the role of unions has been more limited — in Germany they can largely be characterized as ‘consenters’, whereas in Britain, their impact is negligible; (iv) in accordance with the specific systems of industrial relations, the design in Germany very much follows the concept of social partnership; in Britain the design is usually based on unilateral management decisions; and (v) based on these conditions and causal pathways, ‘enclave social policy’ is the likely result of the expansionary policy development, although in Germany, these policies have the potential of becoming an element of ‘industrial citizenship’.     

Switching costs and relationship profits in bank lending

This paper studies how the cost of switching banks affects the profits available from relationship based lending when the relationship produces inside information. Lower switching cost compounds the adverse selection problem, discouraging outsider banks to depress loan rates. The adverse selection effect eases off along with higher switching cost, leading to more aggressive bidding and thereby reduction in insider profits. Above a certain threshold, however, the adverse selection effect vanishes completely and the insider profits turn increasing in the switching cost. The model predicts that the availability of relationship credit is non-monotonously related to the magnitude of the switching cost.     

Environmental cost-benefit analysis of alternative timing strategies in greenhouse gas abatement: A data envelopment analysis approach

Assessing the benefits of climate policies is complicated due to ancillary benefits: abatement of greenhouse gases also reduces local air pollution. The timing of the abatement measures influences both the economic costs and ancillary benefits. This paper conducts efficiency analysis of ten alternative timing strategies, taking into account the ancillary benefits. We apply the approach by Kuosmanen and Kortelainen [Valuing Environmental Factors in Cost-Benefit Analysis Using Data Envelopment Analysis, Ecological Economics 62 (2007), 56-65], which does not require prior valuation of the environmental impacts. The assessment is based on synthetic data from a dynamic applied general equilibrium model calibrated to The Netherlands. Our assessment shows that if one is only interested in GHG abatement at the lowest economic cost, then equal reduction of GHGs over time is preferred. If society is willing to pay a premium for higher ancillary benefits, an early mid-intensive reduction strategy is optimal.     

Old dogs learning new tricks? The effect of age and generation on shopping behaviour

ABSTRACT

Previous research has shown that both age and generational cohort membership affect shopping orientation and store choice criteria, although the results are mixed. This study applied a longitudinal research setting to investigate the choice orientations of six generational cohorts and seven age groups, respectively, in the context of non-grocery shopping trips. The study was based on data collected through four household surveys conducted in the Turku area, Finland, over 17 years. An exploratory factor analysis was used to identify six choice orientation dimensions that appeared as sufficiently similar in all four cross-sectional surveys. The results show that although both age and generation, if used as sole independents in a model, only explain 0.1 to 13 per cent of the variation between the categories (one-way ANOVA), in most cases, the differences are statistically significant. Age performed slightly better when the models were run for each year separately. However, in line with the underlying assumption of the generational theory, the relative importance attached to each of the choice orientation dimensions in early adulthood remained somewhat stable when the generational cohorts aged.