124 documents found, page 1 of 13
Simulation of ideal material blocks using cellular automata
Tlemçani, Mouhaydine; El Bouziani, Nada; Fernandes, SaraWe consider deterministic and probabilistic cellular automata to study and describe certain types of patterns in idealized material blocks. We have partic- ular interest in patterns similar to fractures. The inter- nal structure of these material blocks is assumed to be unknown and probabilistic cellular automata are used to obtain distributions for the referred internal struc- ture. We consider the 1D case. Ce...
Using Couplings to Suppress Chaos and Produce a Population Stabilisation Strategy
Lopes, Luís M.; Grácio, Clara; Fernandes, Sara; Fournier-Prunaret, DanièleThe chaotic behaviour of dynamical systems can be suppressed if we couple them in some way. In order to do that, the coupling strengths must assume particular values. We illustrate it for the situation that leads to a fixed point behaviour, using two types of couplings corresponding either to a diffusive interaction or a migrative one. For both of them, we present strategies that easily calculate coupling streng...
Convergence rates for sequences of bifurcation parameters of nonautonomous dyna...
Silva, Teresa; Silva, Luís; Fernandes, SaraIn this paper we study a 2-parameter family of 2-periodic nonautonomous systems generated by the alternate iteration of two stunted tent maps. Using symbolic dynamics, renormalization and star product in the nonautonomous setting, we compute the convergence rates of sequences of parameters obtained through consecutive star products/renormalizations, extending in this way Feigenbaum’s convergence rates. We also ...
O associativismo popular em Portugal no século XXI
Nunes, Nuno; Pereira, Jéssica Chainho; Neves, José Soares; Fernandes, Sara0 associativismo popular está presente na vida quotidiana de praticamente todos nós, ainda que o saber acumulado sobre ele não tenha ainda alcançado um patamar de relevância social, cultural, política, económica ou territorial. Este livro pretende, através das perspetivas de analise sociais, diminuir esse hiato e trazer para o grande público associativismo popular português no dealbar do seculo XXI. Ao longo da...
Artificial Intelligence in Higher Education: Institutional Marketing Strategies...
Serafim, Ana; Fernandes, Sara; Mesquita, Cristina; Veloso, Cláudia M.; Sousa, Bruno BarbosaArtificial Intelligence (AI) presents significant challenges and opportunities in educational practices. As AI technologies evolve, they offer transformative potential for personalized learning and administrative efficiency, but they also raise critical ethical concerns that must be addressed. The following sections outline the main aspects of AI's impact on education. The integration of Artificial Intelligence...
Neuropotenciação e identidade pessoal
Fernandes, SaraNeuropotenciação e Identidade Pessoal levanta perguntas que já não são ficção: e se tocar no cérebro fosse reinventar o Eu? Podemos melhorar a mente sem perder a nossa identidade? Num cruzamento envolvente entre filosofia, neurociência, psiquiatria e literatura, a autora convida-nos a explorar os riscos e as promessas das novas tecnologias cerebrais. Um livro desafiante, atual e imperdível para quem quer pensar...
Carnosic acid production from sugarcane syrup by engineered yeast in fed-batch ...
Carsanba, Erdem; Fernandes, Sara; Beato, Felipe; Carvalho, Luís Carlos; Pintado, Ana; Lopes, Ana; Ribeiro, Mónica; Leal, Tânia; Pintado, ManuelaPhenolic diterpene carnosic acid (CA) is widely used in the food, nutritional health, and cosmetic industries due to its antioxidative and antimicrobial properties. This work aimed to overproduce CA in Saccharomyces cerevisiae from sugarcane syrup in fed-batch 2 L bioreactor fermentation. A geranylgeranyl diphosphate (GGPP)-producing strain modified with genes encoding the enzymes copalyl diphosphate synthase (...
Educação menstrual e saúde de jovens portuguesas - fatores associados à prática...
Condessa, Isabel; Fernandes, Sara; Antão, Celeste; Anastácio, ZéliaThomas, Gallagher e Thomas (2001) consideram que as mudanças de competência motora dependem essencialmente de três ordens de fatores: biológicos (p.e. genética, crescimento, puberdade), de envolvimento (p.e. oportunidades, encorajamento) e sua interação (p.e. práticas vivenciadas nas diferentes fases de desenvolvimento). Por outro lado, mais recentemente a Organização Mundial da Saúde (WHO, 2018) referia que os...
Innovative pedagogical tools for parasitology based on interactive learning
Sequeira, Susie; Sousa, Mariana; Fernandes, Sara; Barreiros, Luísa; Cunha, Agostinho; Cruz, Agostinho; Fernandes, Sara; Barreiros, LuisaParasitic infections in children, in particular ectoparasitoses, remain a public health challenge within the school context in Portugal. As part of the curricular unit “Agentes e Vectores de Doença I” included in the first year of the Bachelor of Pharmacy, pedagogical tools have been developed to raise awareness on this issue among the various stakeholders involved in primary education. The developed activities...
Simulation of ideal material blocks using cellular automata
Correia Ramos, C.; El Bouziani, Nada; Tlemçani, Mouhaydine; Fernandes, SaraWe consider deterministic and probabilistic cellular automata to study and describe certain types of patterns in idealized material blocks. We have particular interest in patterns similar to fractures. The internal structure of these material blocks is assumed to be unknown and probabilistic cellular automata are used to obtain distributions for the referred internal structure. We consider the 1D case. Certain ...