Purpose: This study aims to analyze the influence of entrepreneurial passion and creativity on entrepreneurial intent. It also examines the mediating role of entrepreneurial self-efficacy between the personal/cognitive variable and entrepreneurial intention. Originality/value: By stressing the importance of cognitive and emotional variables that may influence entrepreneurial intentions among university students (such as creativity and entrepreneurial passion), this study shows the important role that universities have in the development of entrepreneurial intent. According to the Social Cognitive Theory (SCT), the environment influences individual behavior and, therefore, universities should encourage an entrepreneurial environment, enabling the creation of new jobs and companies. Design/methodology/approach: Data were collected through a survey with business and technology students from a Brazilian university. In total, 338 valid responses were obtained, which were analyzed through structural equation modeling. The data were collected in a cross-sectional manner and by a stratified and non-probability sampling method. To address the research hypothesis and to attain the objectives of the study, all constructs were adapted from relevant literature in the field of entrepreneurship. The structural model was examined in relation to the model fit, which enabled the hypothesis to be tested. Findings: Results showed both a direct and indirect positive relationship between entrepreneurial passion on entrepreneurial intention. Regarding the creativity factor, results indicated only an indirect effect of creativity on entrepreneurial intention, this relationship being mediated through entrepreneurial self-efficacy. No significant differences were found in the model regarding age, gender, graduation program, entrepreneurial family background, role models or family income.
A mathematical model of a mineral melting cupola furnace for stone wool production has been developed for improving cupola operation. The 1-D, first-engineering-principles model includes mass and heat balances for the gas phase, five solid phases, and four liquid phases. The gas and solid/liquid phases flow countercurrently. Seven chemical reactions account for the conversions of coke, iron oxide, limestone, and gaseous species. The heterogeneous reactions of coke conversion are limited by both kinetics and mass transport. Heat transfer between phases is modeled including both convection and radiation. The model predicts gas concentrations; mass flow rates; and temperature profiles of the solid, melt, and gas in the cupola, as well as heat loss to the water-cooled walls. Inputs to the model include the coke, rock, and blast air properties, the blast air amount, and the coke percentage in the charge. The unknown model parameters are estimated on the basis of input/output measurements. A comparison of the predicted and measured concentration and temperature profiles inside the cupola shows good agreement.
This research aims at analyzing how sustainability is being incorporated by industrial focal companies on supply chain practices within Rio Grande do Sul state, Brazil. An exploratory qualitative research was performed using a multiple case study strategy where four focal companies were investigated. These focal companies actuate with their supply chains in the electric-electronic, energy and footwear industries. Findings concluded that the economic pillar is still the most important for the investigated companies. It was also noted that the environmental pillar is becoming even more relevant, and the social one is still incipient within the practices of the industrial focal companies of the supply chains investigated.
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