Conservation agriculture practices adopted in southern Brazil

The adoption of conservation agriculture (CA) practices are essential for soil and water conservation. In CA, farmers must adopt no-tillage (NT) with crop rotation to maintain a permanent soil cover. In Brazil, mainly in the South region, for CA to be more efficient, practices such as contour farming and agricultural terraces should also be adopted. Thus, the objective of this study is to determine the extent to which NT has been adopted with crop rotation and others soil and water conservation practices. Data from the Agricultural Census in Paraná State, southern Brazil, were used. For the data analysis, the relationship between the level of adoption of NT and the use of crop rotation, contour farming and agricultural terraces was analyzed. A factor and cluster analysis were performed to distinguish regions in terms of soil and water conservation practices. The results show good overall soil and water conservation practices, although heterogeneity has been observed in the adoption practices between regions. Adoption of NT is high in almost all the studied regions. The conservation practice most widely used with NT is contour farming, whereas the least used is agricultural terraces. Conservation practices for runoff control are being neglected by farmers.     

The effects of Information Technology on absorptive capacity and organisational performance

Information Technology (IT) offers many opportunities for firms to succeed. The aim of this paper is to present a model to reflect how technical IT skills and the use of IT in interdependent tasks may influence the development of organisational absorptive capacity, both potential and realised, which also affects organisational performance. Since knowledge constitutes one of the main resources for organisations to gain competitive advantages and helps firms to improve their organisational performance, absorptive capacity is a key factor in success. This model was tested empirically using a sample of 160 European technological firms. The results of our analysis suggest that the mastery of technical IT skills and the use of IT in interdependent tasks positively affect potential and realised absorptive capacities, which in turn enhances organisational performance. The study concludes by presenting some theoretical and practical implications, limitations, and future research lines.     

Well-being and the Wealth of Nations: How are They to Be Defined?

Questions relating to well-being have recently returned to the limelight, notably with the publication in September 2009 of the Stiglitz-Sen-Fitoussi commission report on the measurement of economic performance and social progress. Has this commission changed the terms of the debate on what a society's wealth and well-being are? Has it proposed new paradigms? In accepting the limitations of GDP as a key indicator of well-being, has it developed a new theoretical foundation and new evaluation criteria suited to a very different situation and to very different priorities from those that prevailed at the time when GDP first became established as a measure of national economic performance? These are the main questions raised and reviewed by this paper.     

The effect of disclosure on the pay-performance relation

We examine whether greater transparency leads to improved evaluation and rewarding of management. We posit that disclosure improves board effectiveness at monitoring executives and in strengthening the link between pay and performance. We use management guidance as our empirical proxy for disclosure and document the following. We predict and find higher sensitivity of CEO compensation to performance (both accounting and stock returns) for firms that issue management guidance than for firms that do not. Our results are robust to multiple tests that address the potential endogeneity of management’s decision to issue guidance (using a Heckman self-selection model, employing a matched-sample approach, and identifying a subsample of firms in which increased disclosure is likely to be exogenous), tests that control for alternative explanations, and tests that use conference calls as an alternative disclosure metric.     

Case Study: The Engineering Economics of RFID in Specialized Manufacturing

Calibrated tools are essential to producing highly specialized, defect-free parts. These tools are used in many processes in specialty manufacturing operations. Personnel could use the improper tool if the calibrated tool has been lost or stolen. This results in reduced business productivity and increased cost due to poor quality. This study demonstrates the cost effectiveness of using a radio frequency identification (RFID) system to track calibrated tools throughout a production facility. The costs of RFID tool tracking are described and return on investments of plausible scenarios are determined. Also, sensitivity analysis is performed utilizing spider plot and tornado diagrams.     

Innovation and the evolution of industries

The analysis of innovation and the evolution of industries has witnessed major progress in several areas. In the last years, several contributions at the empirical, appreciative, econometric and modelling levels have greatly advanced our understanding of innovation, industrial dynamics and the evolution of industries. This paper reviews these contributions. A discussion follows on four key challenges that are required for a better understanding of the relationship between innovation and the evolution of industries: the analyses of demand, knowledge, networks and coevolution.     

The Welfare of Investment Deductibility Under a Flat Tax

This paper analyses the welfare effects of investment deductibility in a contest of endogenous growth generated by learning–by–doing and knowledge spillovers. We present a model where a set of revenue neutral fiscal policies, each characterized by different degrees of investment deductibility and different uniform tax rates on income, have been introduced. We show that, given the ratio of public expenditures to national product, partial investment deductibility turns out to be welfare enhancing when the intertemporal elasticity of substitution of consumption is sufficiently small. Our result means that a pure consumption tax—although ensuring more saving and faster growth—is not always preferable to a revenue neutral tax system in which both consumption and investment are taxed.     

Maastricht: New and Old Rules

Thanks to the Maastricht Treaty and similar arrangements, central banks nowadays enjoy considerable independence. This is generally believed to be the result of relatively recent debates, which led to the conclusion that sheltering monetary authorities from the pressures of fiscal policymakers is a prerequisite for monetary stability. However, in history this point has in fact been a recurrent tenet. We start with David Ricardo’s arguments in favour of central bank independence and against monetisation of public deficits. After WWI, the latter issue was at the heart of the 1920 International Financial Conference of the League of Nations, which fostered and guided the establishment of many new central banks, and shaped various policymaking arrangements of today’s monetary authorities. JEL Classification Numbers: B12, B22, E42, E58, E61     

A semi-automated system for interoperability assessment: an ontology-based approach

ABSTRACT

A plethora of approaches to assess the ability of companies to interoperate can be found in the literature. Nevertheless, most of the current assessment approaches are following manual-conducted processes, which can be laborious, time-consuming and costly. Therefore, this paper aims at developing a knowledge-based system for supporting an interoperability assessment process using an ontology as its knowledge model. The resulting system allows identifying potential interoperability problems and related solutions based on the knowledge model including information of the assessed enterprise(s). A real business case is presented for evaluating the proposed approach.     

On characterizations of distributions by expected values of order statistics and record values with gap

In this paper, we obtain some recurrence relationships for conditional expectations of nonadjacent order statistics and record values when the distribution function is absolutely continuous, and we prove that the distribution function is uniquely determined by the distribution of conditioned record values and by the expected values of these records. Further, different distributions are characterized by these relationships.