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Proposição de um framework teórico-empírico para gestão de riscos na cadeia de suprimentos sustentável
(Universidade Federal de São Carlos, 2019-10-10) Souza, Thiago Alves de; Alcântara, Rosane Lúcia Chicarelli; https://lattes.cnpq.br/6141230203546076; https://lattes.cnpq.br/5674317433971352
Over the past few years, organizations have sought to integrate the different aspects of sustainability into their business by addressing environmental, social and economic issues more effectively. An efficient way to implement sustainability in operations can be through the sustainable management of your supply chains. Sustainable supply chains, however, are exposed to a number of risks, such as unsustainable supplier behavior, characterization of a bad public image, workplace accidents, environmental contamination, reputational and image loss, among other issues that may negatively affect your performance. The relationship between the sustainable supply chain and risk management has been pointed by several authors as a conducive area for research. Thus, aiming to fill the gap on the joint theme, the aim of this study is to build a model for sustainable supply chain risk management. To build the theoretical framework, a systematic literature review with 150 articles was performed. Eleven risk source categories were created and 69 risk types were found, in addition to surveying 28 types of mitigation strategies in 4 categories. From an empirical point of view, a unique Case Study was conducted in conjunction with the Critical Incident Technique in a beverage industry. Semi-structured interviews were conducted with 18 respondents from the organization and the information obtained was treated through Content Analysis in the QSR Nvivo 11 software. The results presented discuss the types of risks found that were transportation, laws, standards and regulations, supplies and environment. It was also noted that the organization assesses risk based on the probability and impact criteria. The case study made it possible to survey 51 types of mitigation strategies that were allocated into 22 categories. The organization also develops risk learning by highlighting the key lessons learned in the event of a completed occurrence. Finally, an expanded theoretical-empirical model has been built that enables supply chains to become increasingly sustainable as they have a risk management orientation, thus achieving a number of benefits such as increased preparedness and reduced risk. vulnerability.
Vidros: sólidos ou líquidos? Uma análise via simulação computacional
(Universidade Federal de São Carlos, 2019-10-10) Michelin, José Vitor; Rino, José Pedro; https://lattes.cnpq.br/6801067322823031; https://lattes.cnpq.br/4394314973749403
For many centuries there were different definitions of what glass would be, this discussion persists to current days. Is glass a solid or liquid material? In this work, we answer this question through computational simulations of the main properties of the crystalline solid, liquid and glass materials, comparing its behavior and results. We studied four types of materials models, silicon (Si), zirconium (Zr), silica (SiO 2 ) and alloy of Zr 50 Cu 50 . We have shown that there is a physical change in the process of between the supercooled liquid and the glass, which relates the high viscosity that the glass has with the relaxation time. Based on our results, we affirm that glass does not is a solid nor a liquid, it is a state of matter unique and we create a new definition for it: Glass, within a human time scale, is a physical states of matter with a globally amorphous structure, containing nuclei organized at medium atomic distances throughout the material. It has a temperature called the glass transition, where ergodicity is broken kinetically. Below this temperature, the relaxation time and viscosity increase infinitely, giving the material mechanical rigidity. This state of matter is not thermodynamically stable, which causes it to relax spontaneously over time, with the crystal as its final destination over a very large time limit.