Hayek, Hicks e a ascensão do walrasianismo

O artigo discute a origem e a evolução dos conceitos de equilíbrio e tempo que Hicks utilizou para interpretar a Teoria Geral de Keynes. O trabalho está organizado em duas partes. Na primeira, analisaram-se os trabalhos de Hayek. Examinaram-se sua concepção de equilíbrio intertemporal e projeto de desenvolver uma teoria dos ciclos. Por último, discutiram-se a implementação desse projeto e seus problemas. Na segunda parte, foi examinado como Hicks, ao refletir sobre os problemas da teoria de Hayek, desenvolveu seus próprios conceitos de equilíbrio e tempo.

Lumpiness, capital adjustment costs and investment dynamics

Aggregate investment in the US economy displays a hump-shaped pattern in response to shocks, and the autocorrelation of aggregate investment growth is positive for the first few quarters, turning negative for the later quarters. This paper shows that this feature of the data is the natural outcome of a two-sector consumption/investment model designed and calibrated to reproduce plant-level evidence on capita: accumulation. (C) 2012 Elsevier B.V. All rights reserved.

Flexibility and modeling in business processes: a multi-dimensional relationship

Over the last few years, Business Process Management (BPM) has achieved increasing popularity and dissemination. An analysis of the underlying assumptions of BPM shows that it pursues two apparently contradicting goals: on the one hand it aims at formalising work practices into business process models; on the other hand, it intends to confer flexibility to the organization - i.e. to maintain its ability to respond to new and unforeseen situations. This paper analyses the relationship between formalisation and flexibility in business process modelling by means of an empirical case study of a BPM project in an aircraft maintenance company. A qualitative approach is adopted based on the Actor-Network Theory. The paper offers two major contributions: (a) it illustrates the sociotechnical complexity involved in BPM initiatives; (b) it points towards a multidimensional understanding of the relation between formalization and flexibility in BPM projects.