In this book, Andrew Harvey sets out to provide a unified and comprehensive theory of structural time series models. Unlike the traditional ARIMA models, structural time series models consist explicitly of unobserved components, such as trends and seasonals, which have a direct interpretation. As a result the model selection methodology associated with structural models is much closer to econometric methodology. The link with econometrics is made even closer by the natural way in which the models can be extended to include explanatory variables and to cope with multivariate time series. From the technical point of view, state space models and the Kalman filter play a key role in the statistical treatment of structural time series models. The book includes a detailed treatment of the Kalman filter. This technique was originally developed in control engineering, but is becoming increasingly important in fields such as economics and operations research. This book is concerned primarily with modelling economic and social time series, and with addressing the special problems which the treatment of such series poses. The properties of the models and the methodological techniques used to select them are illustrated with various applications. These range from the modellling of trends and cycles in US macroeconomic time series to to an evaluation of the effects of seat belt legislation in the UK.

Forecasting, Structural Time Series Models and the Kalman Filter

Established in 2006, TATA Africa Services (Nigeria) Limited operates as the nodal point for Tata businesses in West Africa. TATA Africa Services (Nigeria) Limited has a strong presence in Nigeria with investments exceeding USD 10 million. The company was established in Lagos, Nigeria as a subsidiary of TATA Africa Holdings (SA) (Pty) Limited, South Africa and serves as the hub of Tata’s operations in Nigeria and the rest of West Africa.

What About Us

Sustainable Development Goals

Keywords: a Vocabulary of Culture and Society

What makes organizations so similar? We contend that the engine of rationalization and bureaucratization has moved from the competitive marketplace to the state and the professions. Once a set of organizations emerges as a field, a paradox arises: rational actors make their organizations increasingly similar as they try to change them. We describe three isomorphic processes-coercive, mimetic, and normative—leading to this outcome. We then specify hypotheses about the impact of resource centralization and dependency, goal ambiguity and technical uncertainty, and professionalization and structuration on isomorphic change. Finally, we suggest implications for theories of organizations and social change.

The iron cage revisited: Institutional isomorphism and collective rationality in organizational fields (Chinese Translation)

Understanding and Supporting Management Decision- Making. South East Asian Case Studies on Environmental Management Accounting

The challenge of using Environmental Management Accounting (EMA) tools such as full cost accounting to improve waste and recycling management has been acknowledged for over a decade. However, research on assessing and understanding local government use of EMA, especially broader levels of EMA, is lacking. This study investigates the link between the nature and drivers of EMA practice for waste and recycling services based on a survey conducted with local governments in New South Wales, Australia. The study finds that although social and organisational factors are related to the uptake of EMA, local governments are subject to stronger functional demands than institutional pressures in their use of more expansive EMA such as indirect and external costs and impacts. This implies that the use of EMA in local government is viewed more as an adaptive activity to cope with functional challenges and achieve efficiency, than as an institutional imperative to achieve social acceptance.

Environmental management accounting in local government: Functional and institutional imperatives

Environmental accounting for waste management: A study of local governments in Australia

The need for monetary information within corporate water accounting

Purpose




This paper aims to compare the influence of different legal systems on corporate sustainability management practices. Against the background of growing internationalization of business activities, it additionally considers whether internationalization allows companies to circumvent the influence of national authorities.




Design/methodology/approach




Three legal systems are compared using regression analyses of more than 200 large corporations in five countries: common law (USA and Australia), German code law (Germany) and French code law (France and Spain).




Findings




The impact of national and international authorities is found to be strongest in French code law countries. In addition, the influence of international authorities is stronger for corporations with higher shares of international sales. For both national and international authorities, the degree of internationalization is found to moderate the influence of the legal system on corporate sustainability practices.




Practical implications




The legal system in place influences the relative effectiveness of national and international authorities over company sustainability practices and needs to be taken into account in policymaking. To be effective, international authorities need to work with or substitute for national authorities in promoting corporate sustainability practices in countries depending on their legal systems.




Originality/value




This research applies and quantitatively tests La Porta’s (1998) framework on legal systems in the new context of corporate sustainability.

Roger Burritt

Papers

Understanding and Supporting Management Decision- Making. South East Asian Case Studies on Environmental Management Accounting

Environmental management accounting in local government: Functional and institutional imperatives

Environmental accounting for waste management: A study of local governments in Australia

The need for monetary information within corporate water accounting

Legal Systems, Internationalization and Corporate Sustainability: An empirical analysis of the influence of national and international authorities