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We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in the construction of hegemonies in SEA research in Brazil. In particular, we examine the role of hegemony in relation to the co-option of SEA literature and sustainability in the Brazilian context by the logic of development for economic growth in emerging economies. The methodological approach adopts a post-structural perspective that reflects Laclau and Mouffe’s discourse theory. The study employs a hermeneutical, rhetorical approach to understand and classify 352 Brazilian research articles on SEA. We employ Brown and Fraser’s (2006) categorizations of SEA literature to help in our analysis: the business case, the stakeholder–accountability approach, and the critical case. We argue that the business case is prominent in Brazilian studies. Second-stage analysis suggests that the major themes under discussion include measurement, consulting, and descriptive approach. We argue that these themes illustrate the degree of influence of the hegemonic politics relevant to emerging economics, as these themes predominantly concern economic growth and a capitalist context. This paper discusses trends and practices in the Brazilian literature on SEA and argues that the focus means that SEA avoids critical debates of the role of capitalist logics in an emerging economy concerning sustainability. We urge the Brazilian academy to understand the implications of its reifying agenda and engage, counter-hegemonically, in a social and political agenda beyond the hegemonic support of a particular set of capitalist interests.

The objective of this chapter is to illustrate how globalization affects labor mobility and work. The impact of globalization ranges from a profound restructuring of productive agriculture and rural labor markets to the forms through which production and labor are controlled – including the internal and external systems of food quality and safety standardization. These aspects require a broad readaptation and modernization of food distribution models and the standardization of technical principles. In the sector of local food distribution, these changes have significantly affected the lives of those involved, especially in terms of increased competitiveness and the escalation of the demands associated with the enhancement of the quality of products. Moreover, accelerated technological innovations, such as information technology, have facilitated the compression of time and space and shaped forms of social resistance. In this scenario, the reduction of logistic costs in the production and distribution of commodities has become one of the fundamental conditions for the viability of large companies. This is more the case for industries that deal with highly perishable produce such as fresh food. Through an analysis of the perspectives of workers in the refrigerated cargo industry, the chapter illustrates the pressure that fall upon the individual routine of those involved in this field and the ensuing changes in this sector's operating standards. The study was conducted in the city of Recife, in the northeastern portion of Brazil.

The purpose of this paper is to present the results of a metallurgical, mechanical and tribological characterization of the weld and heat-affected zone (HAZ) of aluminothermic welding of premium rails used in heavy haul, looking into the origins of the squat defects associated with rail wear.

A full factorial design of experiment was carried out for 24 welds of premium and super premium rails. The factors studied were chemical composition, welding gap and preheating time. The welds were inspected visually and by ultrasound to detect superficial and internal defects and characterized by macrographic analysis, hardness profile, tensile tests and microstructural characterization in scanning electronic microscopy. Pin-on-disk test were carried out to compare the tribological behavior of the different regions of the weld rail.

Squat formation was shown to be associated with spheroidized pearlite regions formed on the HAZ of the welds, presenting near half the hardness of the weld metal. Thermal analysis showed that spheroidized pearlite is a result of partial austenitization at these positions. Tribological tests showed that low hardness regions presented smaller wear resistance than both the weld metal and the parent rail. Tensile test of the whole region resulted in brittle fracture along the weld metal.

The results showed that it is essential to reduce the dimensions of the HAZ and the width of the hardness drop area to mitigate squat formation in the HAZ edges.

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-01-2020-0020/

This paper aims to propose an approach based upon the principal component analysis (PCA) to define a contribution rate for each variable and then select the main variables as inputs to a neural network for energy load forecasting in the region southeastern Brazil.

The proposed approach defines a contribution rate of each variable as a weighted sum of the inner product between the variable and each principal component. So, the contribution rate is used for selecting the most important features of 27 variables and 6,815 electricity data for a multilayer perceptron network backpropagation prediction model. Several tests, starting from the most significant variable as input, and adding the next most significant variable and so on, are accomplished to predict energy load (GWh). The Kaiser–Meyer–Olkin and Bartlett sphericity tests were used to verify the overall consistency of the data for factor analysis.

Although energy load forecasting is an area for which databases with tens or hundreds of variables are available, the approach could select only six variables that contribute more than 85% for the model. While the contribution rates of the variables of the plants, plus energy exchange added, have only 14.14% of contribution, the variable the stored energy has a contribution rate of 26.31% being fundamental for the prediction accuracy.

Besides improving the forecasting accuracy and providing a faster predictor, the proposed PCA-based approach for calculating the contribution rate of input variables providing a better understanding of the underlying process that generated the data, which is fundamental to the Brazilian reality due to the accentuated climatic and economic variations.

At the outset, though, and before brief summaries of each of these cases are presented, it is important to underscore two key points that guide the organization of the entire volume. First, capital mobility is a complex phenomenon that assumes various forms as different types of capitals move at different velocities. Second, capital mobility is a necessary and irreplaceable component of capitalism. As for the first aspect, we will consider three types of capital: financial capital, productive capital, and labor. Obviously, these three forms of capital are endowed with different features that affect their behaviors and their ability to move through time and space. While all these three forms of capital share the common requirement that they need to be utilized in increasingly accelerated manners if capital accumulation had to expand, they also display tendencies that favor financial and productive capital and subordinate labor. If effect, the subordination of labor to financial and productive capital is one of the primary characteristics of globalization and one item that allowed the rapid expansion of capital accumulation over the last two decades.