87 documents found, page 1 of 9
Dengue disease: Applying personal protective measures with delay
Brito da Cruz, Artur M. C.; Rodrigues, Helena Sofia; Monteiro, M. Teresa T.Dengue is a vector-borne disease considered one of the major concerns in public health especially in tropical and subtropical areas. Some prevention measures should be used to reduce the impact of the mosquito bites. In this work, the simultaneous use of three personal protective measures - skin repellent, treated bed net and insecticide-treated clothes - is analyzed. A constrained optimization problem taking i...
Assessing multiple personal protections for dengue: An optimal control approach
Brito da Cruz, Artur M. C.; Rodrigues, Helena Sofia; Monteiro, M. Teresa T.Dengue is a disease that has a heavy financial burden, both for governments and for individuals. In this research, the main focus is the study of combined Personal Protective Measures (PPM), using an optimal control perspective. At the same time, an extra parameter is also considered in the mathematical formulation: the willingness of the population to use these measures. The increase of 25% of the population w...
Engaging with real-world phenomena through Matlab programming projects
Monteiro, M. Teresa T.; Hornink, G; Vieira, FláviaThis presentation aims to report a pedagogical experience carried out in a course unit of a graduate programme in Computer Engineering at the University of Minho. The course unit, Numerical Methods and NonLinear Optimization (NMNO), integrates the first semester of the third year. The experience took place in 2021-2022 with 146 students, and it was supported by Centre IDEA-UMinho within the project 2Be-Learning...
Curved layer path planning on a 5-axis 3D printer
Duarte, João; Espírito Santo, Isabel; Monteiro, M. Teresa T.; Vaz, A. Ismael F.Purpose – This paper aims to provide an approach to print shell-type objects using a 5-axis printer. The proposed approach takes advantage of the two additional printer degrees of freedom to provide a curved layer path planning strategy. Design/methodology/approach – This paper addresses curved layer path planning on a 5-axis printer. This printer considers movements along the three usual axes together with two...
An optimal control problem applied to a wastewater treatment plant
Monteiro, M. Teresa T.; Espírito Santo, I. A. C. P.; Rodrigues, Helena SofiaThis paper aims to present a mathematical model that describes the operation of an activated sludge system during one day. Such system is used in the majority of wastewater treatment plants and depends strongly on the dissolved oxygen, since it is a biological treatment. To guarantee the appropriate amount of dissolved oxygen, expensive aeration strategies are demanded, leading to high costs in terms of energy ...
An optimal control problem applied to a wastewater treatment plant
Monteiro, M. Teresa T.; Santo, Isabel Espírito; Rodrigues, Helena SofiaThis paper aims to present a mathematical model that describes the operation of an activated sludge system during one day. Such system is used in the majority of wastewater treatment plants and depends strongly on the dissolved oxygen, since it is a biological treatment. To guarantee the appropriate amount of dissolved oxygen, expensive aeration strategies are demanded, leading to high costs in terms of energy ...
Household costs for personal protective measures for dengue disease
Cruz, Artur M. C. Brito da; Rodrigues, Helena Sofia; Monteiro, M. Teresa T.Dengue is a vector-borne disease considered one of the major concerns in public health. Measures can be used to reduce the impact of the mosquito around the houses. In this paper, the main focus is mosquito bites prevention through the use of personal protective measures (PPM), such as skin repellent and bed nets. It is proposed a system with six ordinary differential equations, modeling the interaction human-m...
Innovating to improve – An experience in a computer engineering programme
Monteiro, M. Teresa T.; Hornink, Gabriel; Vieira, FláviaThis paper presents a pedagogical experience carried out in a course unit of a master’s programme in Computer Engineering at the University of Minho. The course unit, Numerical Methods and Nonlinear Optimization, is placed in the first semester of the third year and the experience took place with 184 students in the academic year 2020-2021. Until then, it had been taught in a traditional way, with theoretical l...
A qualitative analysis of a Mycoplasma genitalium epidemiological model
Almeida, Ricardo; Monteiro, M. Teresa T.; Venturino, Ezio; Machado, LuísThe objective of the article is to present a qualitative analysis of a mathematical model for the spread of a sexually transmitted infection caused by Mycoplasma genitalium. Recent investigations revealed that this pathogen is becoming resistant to the use of macrolides and can turn into a superbug in the next few years. We present an epidemiological model to describe the spread of the disease. The equilibrium ...
Household costs for personal protective measures for Dengue disease
Britoda Cruz, A. M. C.; Rodrigues, H. S.; Monteiro, M. Teresa T.Dengue is a vector-borne disease considered one of the major concerns in public health. Measures can be used to reduce the impact of the mosquito around the houses. In this paper, the main focus is mosquito bites prevention through the use of personal protec tive measures (PPM), such as skin repellent and bed nets. It is proposed a system with six ordinary differential equations, modeling the interaction human-...