Multi‐objective crop planning using pareto‐based evolutionary algorithms

The scarcity of water is a growing problem worldwide. The increasing use of water in industrial, urban, and agricultural applications together with the continuous increase in population require the proposal of efficient solutions. In the case of agricultural use, it is necessary to not only maximize the economic benefits, but also to establish optimal water‐saving crop planning, especially for water‐deficient regions. Due to the multi‐objective nature of these problems, the decision‐making process is complex. Fortunately, the increase in computational resources available in recent years has allowed researchers to develop efficient computational algorithms to deal with real and complex optimization problems, including agricultural ones. In particular, multi‐objective evolutionary algorithms (MOEAs) are known for their ability to optimize several objective functions simultaneously to provide a representative set of the Pareto front, which is a set of problem solutions representing a trade‐off between the best values of each of the objectives. This article proposes solving a multi‐objective crop planning problem using two Pareto‐based MOEAs. Results obtained when solving this problem using real data collected from a large number of greenhouses in Spain to show the advantages of using these multi‐objective approaches.     

The internal capital markets of business groups: Evidence from intra-group loans

We study business groups? internal capital markets using a unique data set on intra-group lending in Chile (1990–2009). In line with groups? financing advantage, firms that borrow internally have higher investment, leverage, and return on equity (ROE) than other firms. At the margin, controlling shareholders have higher cash-flow rights in borrowing firms than in lending firms. However, there is no robust evidence of minority shareholders losing out from intra-group loans as tunneling predicts. Our evidence is consistent with the idea that strict regulation and disclosure requirements for intra-group loans, which are features of the Chilean market, reduce the risk of expropriation in pyramids.     

Strategic Alignment,Performance, and Value

ABSTRACT

The paper discusses the reaching of superior value based on strategic alignment and the adoption of performance measurement systematics, which are based on multiple and integrated perspectives, using primary data obtained through the survey of companies of high complexity and impact in the Brazilian economy. The operationalization was developed from the adoption of multivariate analysis, which revealed the existence of correlations between the variables studied, reinforcing assumptions about reaching superior value based on the improvement of the mechanisms that support the strategic management dimensions with the backdrop of performance management practices based on the principles of Kaplan and Norton (2001 Kaplan , R. S. , and Norton , D. P. (2001). Organização Orientada para a Estratégia . Rio de Janeiro : Campus. [Google Scholar]) for organizations focused on strategy and the Balanced Scorecard approach. The findings confirm the importance of the association among strategic alignment vectors to reach a superior value and the existence of different clusters of organizations dedicated to reach and support value, mainly through combining the organization's relational capabilities (Soft Skills). The study deepens the discussion on strategic alignment of organizations through the introduction and testing of the Institutional Steering, Performance Maturity, and Balanced Performance constructs.     

ENDOGENOUS CYCLICAL GROWTH WITH A SIGMOIDAL DIFFUSION OF INNOVATIONS

The model we propose in this paper is an extension of the one described in Freeman et al. [Freeman, S., Hong, D. and Peled, D. (1999) Endogenous Cycles and Growth with Indivisible Technological Developments. Review of Economics Dynamics, 2, 403–432]. In our model, we incorporate the process of diffusion of major innovations and analyze macroeconomic effects on consumption, capital and aggregate output. Following Bresnahan and Trajtenberg [Bresnahan, T. and Trajtenberg, M. (1995) General Purpose Technologies: Engines of Growth?. Journal of Econometrics, 65, 83–108.], Helpman [Helpman, E. (ed.) (1998) General Purpose Technologies and Economic Growth. MIT Press] and Lipsey et al. [Lipsey, R.G., Carlaw, K. and Bekar, C. (2005) Economic Transformations: General Purpose Technologies and Long Term Economic Growth. Oxford University Press.] we assimilate major innovations with the emergence of certain GPTs, and we suggest that the diffusion process for these technologies, at a large scale, might follow an S-shaped pattern. The proposed model presents optimum stationary solutions which are cyclical and have a wave dynamic within each cycle. The cycles are characterized by certain co-movements in consumption, R&D investment, capital accumulation and output. Consideration of the innovation diffusion process highlights new aspects of endogenous cycles and long-run growth.     

Efficiency and performance in gas distribution. Evidence from Brazil

This article analyses the current state of the gas distribution industry in Brazil, by identifying the main factors that determine its efficiency. In order to test the performance of the industry, we have calculated the firms’ technical efficiency during the period 2001–2009. We analyse whether some economic and technological factors as consumer density, load factor or regulation, among others, have affected the performance of this industry. We show that companies serving markets with different customer characteristics (diversification) have reached higher levels of efficiency and evolved faster. Moreover, the private ownership and price cap regulation are more efficient in relation to public ownership and cost of service regulation. These findings are important to support the improvement of the regulation of gas distribution in the Brazilian states.     

Conjoint analysis of industry location preferences: evidence from the softwood lumber industry in the US

Conjoint Analysis (CA) was used to study location preferences among members of the softwood lumber industry in the southern and western regions of the US. This industry was selected as an example of a resource-based industry to test several hypotheses derived from location theory. Decision-makers, owners and managers, identified price of logs and distance to sources for logs as the most important location factors. A secondary category included wages and energy costs. Other variables such as cost of land, quality of access roads and distance to markets are less important. There were statistically significant differences in the part-worth estimates of raw materials and wage costs among decision-makers but not between regions in an ordered model for site preference. Marginal analysis of the price of logs stressed its importance as the major location factor in the softwood lumber industry.     

The measurement of technical efficiency: a neural network approach

The main purpose of this paper is to provide an introduction to artificial neural networks (ANNs) and to review their applications in efficiency analysis. Finally, a comparison of efficiency techniques in a non-linear production function is carried out. The results suggest that ANNs are a promising alternative to traditional approaches, econometric models and non-parametric methods such as data envelopment analysis, to fit production functions and measure efficiency under non-linear contexts.     

Coaches’ migration: a qualitative analysis of recruitment,motivations and experiences

This study examines sport coaches’ perceptions about their experiences abroad. Coaches are part of a diverse new set of mobilities occurring in the sport labour market. However, few authors explored the individual cases of coaches’ migration. Here, we examine coaches’ recruitment process, motivations to migrate and their experiences abroad. Participants were five migrant coaches chosen through purposive sampling to achieve a pool of deep and rich data regarding the research topic. Data was collected using semi-structured interview questionnaires. For the exploration and analysis of the qualitative data, we used MAXQDA 11 software package. The results showed that all coaches migrated through an informal mechanism of recruitment which relied on their networks. Their discourse suggested they fit three types of migration referred in the literature: ambitionist, cosmopolitan and pioneer. Their experiences abroad were mainly related to their professional career and adaptation. All coaches reported that their experience was positive and they recommend that other coaches migrate as well. These results are important for the understanding of sport migration not least because coaches are at the core of the migration process of various stakeholders.     

Business incubation: innovative services in an entrepreneurship ecosystem

This article studies the process of business services provision by business incubators. It considers this provision as an innovative and dynamic process, carried out in an open innovation context, where many elements from the entrepreneurship ecosystem (EE) interact. Thus, the article creates new knowledge because conceptually, it defines and relates all the key elements that are the source of innovation and value added: business services themselves, the EE, the context of open innovation and the features of that interaction. This conceptualization is tested empirically in two different scopes, a broad one with 255 business incubators around the world, and a Spanish case with two university incubators with some references to a foreign two-country study. Results detect some patterns of service provision according to ownership, size and partnership of the business incubators and show the efficacy of the cooperation of the private and public sectors and the universities.     

Controlling shareholders and market timing in share issuance

We examine market timing in the equity issuance of firms controlled by large shareholders using a hand-collected data set of controlling shareholders' ownership stakes in Chile between 1990 and 2009. When a firm issues shares, the controlling shareholder can either maintain or change his ownership stake depending on how many of the new shares he subscribes. Issuance predicts poor future returns and is preceded by high returns, but only when the controlling shareholder's stake is significantly reduced. Consistent with market timing, the results are stronger in the absence of institutional investors and in hot issuance markets.