An ex ante evaluation of mobile depots in cities: A sustainability perspective

Today, a large share of cost, congestion, and emission in cities is attributed to light goods vehicles like carrier vans distributing to the last mile. The aim of many policy agendas is to reach cleaner cities with less disturbance from the distribution vehicles. Several suggestions have been put forward and tested in research and practice, such as access restrictions, multimodal transport, and use of cleaner vehicles. In this paper, we develop a case for a more sustainable freight distribution within cities using an ex ante case study. The idea of the mobile depot is built on the iteration between historical transitions within cities and contemporary developments in urban freight distribution, and then analyzed ex ante both quantitatively in calculations and qualitatively in two stakeholder workshops. The idea is integrated and multimodal, based on a mobile depot (e.g., a bus, truck, barge, or tram) that circles the city and connects to low emission last mile delivery options such as LEVs (Light Electrical Vehicles) or cargo bikes. We found that such a system can be environmentally and socially better for the city context, while maintaining economic viability above a certain utilization rate of the mobile depot for the transport operators.     

Do neighboring municipalities matter in industrial location decisions? Empirical evidence from Spain

This paper focuses on industrial location, assuming that entrepreneurs not only consider the advantages associated with a certain municipality, but also those coming from nearby areas. Exploratory analysis reflects the existence of spatial patterns in the creation of manufacturing establishments and sheds light on the geographical scope on which agglomeration economies operate in industrial location. Spatial Probit models and standard Probit models with spatially lagged explanatory variables are estimated to test whether neighboring municipalities’ location decisions and characteristics, including agglomeration economies, matter in industrial location choices. Results show that neighboring municipalities location decisions and characteristics help to explain location decisions of new establishments for 11 manufacturing industries in Spanish municipalities (NUTS V) over the period 1991–1995.     

Coordination of efforts in disaster relief supply chains: the moderating role of resource scarcity and redundancy

Connecting to the ongoing conversation on the importance of effective coordination, in this paper, we empirically examine the impact of key theoretical modes of coordination, i.e. resource sharing, standardisation of operations, and synchronisation in disaster relief supply chains, on the performance of the humanitarian organisations. Survey data are collected from 101 humanitarian organisations in the emerging countries within Southeast Asia. Data are used to test a conceptually developed model, using structural equation modelling–partial least square (SEM-PLS) approach. The results reveal the significant impact of resource sharing and standardisation on performance outcomes in terms of resources used, responsiveness, and flexibility, while resource sharing is highly weakened by resource scarcity and redundancy. The managerial implication and recommendations are concluded for further research.     

关于电子商务与中国发展电子商务的若干思考

本文首先分析了电子商务的概念，发展前景，特性和诸多模式的性质，阐述了中国目前发展电子商务的意义，战略和措施，探讨了政府在电子商务发展中的角色与定位。     

Estimating the size of the shadow economy in Spain: a structural model with latent variables

There has recently been a revival of international interest in measuring the size of the shadow economy. The current study adopts an approach to the Spanish case that is based on the theory of unobservable variables. This methodology involves the estimation of structural models (MIMIC) which analyses a set of causes of the shadow economy while simultaneously taking into account its influence upon a series of indicators. The proposed model permits the determination of a relative evolution over time of the size of the shadow economy, which requires the calibration of the model with an exogenous estimation in order to obtain real values. The exogenous estimation employed is that obtained by a monetary method based on a money demand function. The results show a considerable shadow economy, measuring between 8 and 18.8% of GDP in the period 1976–2002, and demonstrate that the shadow economy is significantly influenced by the tax burden, the degree of regulation and unit labour costs. A positive correlation is obtained between GDP, money demand and the level of the shadow economy.     

The shadow economy in three Mediterranean countries: France,Spain and Greece. A MIMIC approach

This paper offers estimations of the evolution of the shadow economy in three Mediterranean countries, namely France, Spain and Greece. A multiple indicators and multiple causes model based on the latent variable structural theory has been applied. As established by Giles (Working paper on monitoring the health of the tax system, 1995), filtered data to solve the non-stationary problems are used. The model includes the tax burden (both as a whole and disaggregated into direct taxes, indirect taxes and social security contributions), a proxy of regulation burden, theu nemployment rate and self-employment as causes of the shadow economy and the GDP growth rate, the labour force participation ratio and the currency ratio as indicators of the underground economy. The results confirm that unemployment, the fiscal burden and self-employment are the main causes of the shadow economy in these countries, and confirm that an inverse relationship exists between the official GDP growth rate and that of the unofficial economy. This paper has benefited from the comments and suggestions of the anonymous referees. The usual disclaimer applies. The paper was partly written when third author was visiting Real Colegio Complutense at Harvard University. The hospitality of this Institution is gratefully acknowledged.