ECONOMETRIC ANALYSIS OF EUROPEAN CARBON DIOXIDE EMISSIONS BASED ON RECTANGULAR SUPPLY-USE TABLES

This paper formalises the so-called Supply-Use Based Econometric (SUBE) approach that allows for the introduction of econometric analysis in the calculation of backward input–output multipliers of the Leontief-type quantity model, using rectangular supply and use tables. The SUBE approach does not require any kind of inverse matrix and incorporates the traditional approach (with square supply-use tables) as a particular case. The empirical analysis shows that the SUBE carbon dioxide multipliers for the EU27 are considerably lower than those obtained by the traditional Leontief inverse. In an application of the SUBE approach, the European economy appears to emit about 10% less carbon dioxide than in a situation in which it would not import any intermediate inputs from outside the EU27.     

Employees' choices in learning how to use information and communication technology systems at work: strategies and approaches

The purpose of this paper is to promote the understanding of how employees learn to use information and communication technology (ICT) systems at work. The elements of a learning activity in the context of ICT use are identified from the literature. In particular, approaches to learning, learning strategies and problem‐solving strategies are reviewed. The empirical part of the study examines how employees choose to start learning how to use ICT systems, and how they choose to learn while solving problems related to system use. The data were collected using qualitative semi‐structured interviews with 39 employees in three organizations. The interviewees usually preferred to learn how to use ICT quickly and without investing too much effort. The interviewees preferred informal learning and problem‐solving strategies. The most commonly used strategies were to try things out alone or together with peers, or to ask for help from peers. The main conclusions of the study are that the users' learning intentions affect the kind of learning support they need and that ICT learning is best approached as a learning activity strongly rooted in collaboration and the social context.     

On-line group decision support by preference programming in traffic planning

Preference programming is a decision support technique which allows decision makers to give preference statements of weight ratios in terms of intervals instead of single numbers in a value tree. Individual preferences, based on single number statements, can be combined into an interval model, and the negotiation proceeds by focusing on decreasing the width of the intervals. The preference programming approach was evaluated with a realistic traffic planning problem by using the HIPRE 3+ Group Link software. The results from nine test groups indicate that preference programming is an operational group decision support technique which initiates negotiations and efficiently directs the discussion towards issues which are relevant in reaching a consensus.     

Outsourcing and Offshoring: Implications for Productivity of Business Services

This paper reviews the implications of outsourcing and offshoringfor the productivity of business services in the UK. Officialstatistics indicate that business-service productivity has grownby over 20 per cent in the last 7 years at the same time asemployment grew by 20 per cent. The paper considers possiblefactors that account for the simultaneous growth of employmentand productivity. First, we discuss outsourcing and offshoring,and their role in enhancing productivity through greater specialization,standardization, and consolidation of business processes, anda shift to higher value-added services. Outsourcing of businessservices is interpreted as part of corporate restructuring,namely as the unbundling of corporate functions as well as verticaldisintegration. Second, as some services become more like products,both low-skilled and high-skilled jobs are subjected to productivitygrowth through standardization and digitization. It is argued,however, that the future of business-service productivity ison a knife-edge, depending on the mix of two sources of productivityenhancement—namely greater standardization and capturingvalue from customized solutions. Footnotes ¹ E-mail addresses: mari.sako{at}sbs.ox.ac.uk     

INTEGRATING A HOUSEHOLD DEMAND SYSTEM IN THE INPUT–OUTPUT FRAMEWORK. METHODOLOGICAL ASPECTS AND MODELLING IMPLICATIONS

In this paper we argue that an accurate representation of household consumption behaviour is central to the analysis and comparison of policy interventions addressing sustainable consumption. Therefore, we propose to extend an input–output model with a specific household consumption model, at the core of which is a system of equations explaining the allocation of the households' overall expenditure across different purposes, such as buying food, the consumption of fuel for heating or electricity for cooling, education of children or travelling in terms of total expenditure and relative prices. This paper shows that the integration of a specific module for household consumption in a standard input–output model is an improvement for the analysis of the policies aimed at altering consumer behaviour.     

Civil society and the right to have access to social security in South Africa

This article examines transformation in South Africa's social security system from a human rights and civil society perspective. Three claims are made: rights can be realised by civil society organisations, civil society organisations can transform social security, and the realisation of social security rights by civil society organisations can give us a means to address many of the problems identified with the involvement of NGOs in development. The basis of this assessment is a performative conception of rights, derived from the Grootboom legal judgment, which would allow civil society action to address the problems inherent in the social security system in South Africa. An analysis is thus made of this kind of public action and it is shown how it can be subsumed under the 1996 South African Constitution, and how the Constitution could transform civil society organisations' social action. Civil society action, it is proposed, could be valuable in further reforming the South African social security system, and in realising rights as autonomous social action.     

A model for R&D performance measurement

R&D activities are increasingly costly and risky and, as a consequence, measuring their performance and contribution to value becomes critical. This paper illustrates a formal model for measuring R&D performance, based upon a balanced and synthetic evaluation of quantitative indicators from five different perspectives of performance: financial, customer, innovation and learning, internal business, alliances, and networks. The model is built in coherence with the suggestions coming from the theory of measurement in soft systems, which gives relevant guidelines for ensuring validity, objectivity and inter-subjectivity of the model. Then, an application in a real R&D setting is described, which helps to understand the model and to enlighten its main advantages and limits.     

Single factor models with Markovian spot interest rate: an analytical treatment

In the spirit of the Heath–Jarrow–Morton methodology, we provide an analytical characterization of bond prices within the context of single factor term structure models in which the spot rate follows a Markov process and the volatility structure of zero coupon bond returns is stochastic. Also, a perturbative analysis of the extended Cox–Ingersoll–Ross model is proposed. Received: 7 February 2001 / Accepted: 8 June 2002     

Patterns of dominant flows in the world trade web

The large-scale organization of the world economies is exhibiting increasing levels of local heterogeneity and global interdependency. Understanding the relation between local and global features calls for analytical tools able to uncover the global emerging organization of the international trade network. Here we analyze the world network of bilateral trade imbalances and characterize its overall flux organization, unraveling local and global high-flux pathways that define the backbone of the trade system. We develop a general procedure capable to progressively filter out in a consistent and quantitative way the dominant trade channels. This procedure is completely general and can be applied to any weighted network to detect the underlying structure of transport flows. The trade fluxes properties of the world trade web determine a ranking of trade partnerships that highlights global interdependencies, providing information not accessible by simple local analysis. The present work provides new quantitative tools for a dynamical approach to the propagation of economic crises.