Deolinda Rasteiro

Deolinda Rasteiro
Instituto Politécnico de Coimbra | IPC · Departamento de Física e Matemática

PhD, Mathematics

About

43
Publications
9,561
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
263
Citations
Introduction
Deolinda Rasteiro currently works at the Departamento de Física e Matemática, Instituto Politécnico de Coimbra. Deolinda does research in Biomedical Engineering, Computer Engineering and Engineering Education. Their current project is 'Path Optimization'.
Additional affiliations
December 2000 - present
Instituto Politécnico de Coimbra
Position
  • Professor
October 2000 - present
Instituto Politécnico de Coimbra
Position
  • Professor

Publications

Publications (43)
Article
Full-text available
In recent years, the use of personal data in marketing, scientific and medical investigation, and forecasting future trends has really increased. This information is used by the government, companies, and individuals, and should not contain any sensitive information that allows the identification of an individual. Therefore, data anonymization is e...
Article
Full-text available
Intermittent vesical self-catheterisation is a legitimate and safe technique that has been reported since the 1970s as a solution for the treatment and prevention of vesical urinary complications resulting from spinal cord injury. This practice, using clean technology, has been asserting itself as one of the best alternatives for people with neurog...
Chapter
There are eight Mathematical competencies proposed by B. Alpers et al. in the Framework for Mathematical Curricula in Engineering Education, previously proposed in the Danish KOM. However, some of the competencies identified are difficult to evaluate in higher education since there is a large number of students in the classrooms and therefore the p...
Chapter
The concepts taught during a Statistical Methods course make use of different mathematical skills and competencies. The idea of presenting a real problem to students and expect them to solve it from beginning to end is, for them, a harder task then just obtain the value of a probability given a known distribution. Much has been said about teaching...
Chapter
A multiple integral is often defined as an operator in which the integrand involves a function of more than one variable and which requires for evaluation repetition of the integration process. A so-called simple integral finds the area under a curve in one dimension. A double integral can find the area under a two-dimensional curve (a surface). Si...
Chapter
Linear programming was developed during World War II, when a system with which one wanted to maximize the efficiency of resources was of utmost importance. The word “programming” was a military term that referred to activities such as planning schedules efficiently or deploying men optimally. George Dantzig, a member of the US Air Force, developed...
Chapter
Random graph theory was initially proposed by Paul Erdős and Alfred Rényi in the 1950s. A book of Béla Bollobás presented the first systematic and extensive group of results of random graphs. Associating to each edge of a random graph a real random variable, we obtain a probabilistic network. The determination of an optimal path between two nodes i...
Chapter
This chapter contains some programs and specific software that could help lecturers to solve some of the proposed problems. Algorithms and mathematical contents are included in corresponding chapters in the book.
Chapter
In 2017, we proposed a European project: Rules_Math, in order to find new rules to assess mathematical competencies. This proposal was a consequence of what we were facing separately in our daily classes. We teach mathematics in several engineering schools, and we want to change the way of teaching and learning for engineering students. Some univer...
Chapter
This paper presents a system named ExoBike, a structure similar to a bicycle, that takes over the function of an exoskeleton with rehabilitation purposes. The proposed system enables the control of limb movements based on the sensor data and the patient intentions. For that it has an adapted seat and several mechanical interface zones that have a s...
Article
We have been working, for some years, in the application of mathematics to different engineering problems with the main goal of improving our students’ motivation and make possible for them to connect and apply what they learn in Calculus classes to other engineering subjects. We describe a case study with students of Electrotechnical Engineering f...
Article
Gliomas are the most common and aggressive primary brain tumours, with a short-life expectancy in their highest grade. Magnetic Resonance Imaging is the most common imaging technique to assess brain tumours. However, performing manual segmentation is a difficult and tedious task, mainly due to the large amount of information to be analysed. Therefo...
Article
Full-text available
In aircraft components maintenance shops, components are distributed amongst repair groups and their respective technicians based on the type of repair, on the technicians skills and workload, and on the customer required dates. This distribution planning is typically done in an empirical manner based on the group leader’s past experience. Such a p...
Article
RESUMO: A análise da distribuição da pressão plantar tem vindo a assumir uma elevada importância, tanto do ponto de vista da abordagem clínica como no contexto da biomecânica ocupacional, por exemplo na ajuda a tomadas de decisão quanto ao tipo de dispositivos a usar no quotidiano. A identificação das principais caraterísticas associadas à distribu...
Conference Paper
Full-text available
PALAVRAS-CHAVE: Distribuição da Pressão Plantar, Deformidades do Pé. RESUMO: A análise da distribuição da pressão plantar tem vindo a assumir uma elevada importância, tanto do ponto de vista da abordagem clínica como no contexto da biomecânica ocupacional, por exemplo na ajuda a tomadas de decisão quanto ao tipo de dispositivos a usar no quotidiano...
Conference Paper
The work aimed to obtain a statistical model for predicting the intensities of the pixels for the different types of brain tissue in magnetic resonance images using Gaussian mixture models by Dirichlet process (GMMDP). The experimental work shows the implementation of the Gaussian mixture model by Dirichlet process to perform the segmentation of br...
Conference Paper
Gliomas are among the most common and aggressive brain tumours. Segmentation of these tumours is important for surgery and treatment planning, but also for follow-up evaluations. However, it is a difficult task, given that its size and locations are variable, and the delineation of all tumour tissue is not trivial, even with all the different modal...
Conference Paper
Brain tumour segmentation from Magnetic Resonance Imaging (MRI) scans have an important role in the early tumour diagnosis and radiotherapy planning. However, MRI images of the brain contain complex characteristics, such as high diversity in tumour appearance and ambiguous tumour boundaries, even when using multi-sequence MRI images. We propose a f...
Conference Paper
Full-text available
In the dynamics of modern society, supported by the potential of ICTs and given the high failure and dropout rates in higher education, particularly in mathematics courses taught in undergraduate engineering, a study was carried out aiming to understand the impact of the use of social networks in the educational processes. In particular, it is inte...
Conference Paper
Full-text available
Protecting Data Warehouses (DWs) is critical, because they store the secrets of the business. Although published research and best practice guides state encryption is the best way to assure the confidentiality of sensitive data and maintain high performance, this adds overheads that jeopardize their feasi-bility in DWs. In this paper, we propose a...
Conference Paper
Full-text available
No comportamento do ser humano, a mão tem funções ligadas à expressividade, à habilidade e capacidade em realizar tarefas, ao sentido do tato e a diversas funções indispensáveis no quotidiano. A mão funciona como um elo entre os seres e tudo aquilo que os rodeia. Contudo, o desgaste e a perda da capacidade de preensão são consequências do seu manus...
Chapter
The problem considered is the optimization of the value of a certain utility function defined over a general resistor random network. A probabilistic interpretation to the qualities in electric network will be given. To the network arcs there are associated parameters which represent the time/length/probability that an object takes to travel from a...
Conference Paper
Full-text available
Decision support for 24/7 enterprises requires 24/7 available Data Warehouses (DWs). In this context, web-based connections to DWs are used by business management applications demanding continuous availability. Given that DWs store highly sensitive business data, a web-based connection provides a door for outside attackers and thus, creates a main...
Conference Paper
Full-text available
The paradigm stemming from the Bologna Declaration, by putting on the student the focus of the teaching/learning process, brings out the need to converge the implementation of strategies for information and communication models to the interests, motivations and learning styles of students so that changes attitude and behavior towards teaching rever...
Conference Paper
Full-text available
This paper aims to explain the entire action plan undertaken in an exploratory study, framed in the project "ACAM – Assessment of competencies/improvement actions" with the objective of better understanding how, where and why students learn or not learn Mathematics. The final purpose is drawing up programs of support to address the lack of skills c...
Conference Paper
Full-text available
The paradigm that came as a result of Bologna’s Declaration admits an assumption of change that aims to replace a teacher-centered model in the transmission of knowledge by a model student-centered and knowledge building. Assuming that higher education is intended to stimulate a greater initiative and autonomy of students, teaching practices used a...
Conference Paper
Full-text available
São frequentemente constatadas grandes dificuldades dos alunos das licenciaturas de Engenharia nas Unidades Curriculares da Área Científica de Matemática, nomeadamente nas referentes ao Cálculo Infinitesimal Básico que conduzem a uma elevada taxa de insucesso e por conseguinte a uma desmotivação de todos os intervenientes no processo educativo, col...
Conference Paper
Full-text available
O paradigma emanado pela Declaração de Bolonha, ao centrar no aluno o processo ensino/aprendizagem, exige ao docente do Ensino Superior uma maior capacidade crítica, uma maior exigência quanto à sua prática pedagógica e um constante envolvimento no percurso dos seus alunos. A importância e a influência que os métodos de ensino aplicados pelos docen...
Conference Paper
Full-text available
The paradigm that came as a result of Bologna’s Declaration by centering in students the teaching/learning stimulates the need to converge the implementation of information strategies and communication models, motivations, interests, and learning styles of students so that the changes in attitude and behaviour towards education and learning results...
Conference Paper
Full-text available
Considerando os elevados índices de reprovação e de abandono no ensino superior, nomeadamente nas unidades curriculares de Matemática, evidencia-se questionar sobre quais as metodologias e estilos de ensino aplicados e quais os ambientes de aprendizagem utilizados que melhor permitam uma corresponsabilização dos alunos no processo educativo e que p...
Conference Paper
Full-text available
The students' performance in national examinations of second level school education / access to third level education is often poor. The same result is also present in the Program for International Student Assessment (PISA), which induces that, students who have access to third level education in general have difficulties in basic mathematics conte...
Conference Paper
Full-text available
O paradigma emanado pela Declaração de Bolonha, admite um pressuposto de mudança que visa substituir um modelo centrado no professor e na transmissão de conhecimento por um modelo centrado no aluno e na construção de conhecimento. Surge assim, neste novo ambiente de ensino/aprendizagem, uma maior exigência ao docente do ensino superior, uma maior c...
Article
Several risk score models are available in literature to predict death/myocardial infarction event for coronary artery disease (CAD) patients, within a short period of time. However, the choice of the most adequate model is not straightforward since there might not be a consensus about the best model to use in clinical practice Moreover, individual...
Chapter
This research is grounded in the view that organizations are information processing systems. Organizations design their structure, processes, and information technologies for the purpose of processing, exchanging, and distributing the information required for their functions. The volume of information exchanged is not always the same. Thus in order...
Conference Paper
Full-text available
Suppose we want to obtain de optimal route in a directed random network, where the parameters associated to the arcs are real random variables following discrete distributions. The criteria that has been chosen by us to decide which route is optimal is the one that minimizes the expected value of an utility function over the considered network. The...
Article
Full-text available
The random graph theory was initially proposed by P. Erdős and A. Rényi in the 1950s–1960s. More recently, B. Bollobás presented the first systematic and extensive treatment of results in the theory of random graphs. Associating to each edge of a random graph a real random variable, we obtain a probabilistic network. The determination of an optimal...
Article
Introduction Di#erent classes of stochastic optimal path problems are considered in the literature. The first work known in this area is due to Frank [1] where the shortest optimal path over a probabilistic graph is determined. The most common criterion to determine the optimal path is the one that maximizes the expected value of an utility functio...
Article
Full-text available
: In this paper, the optimal path problem will be studied from a global point of view and having no restrictions imposed on the network. The concepts of boundness and finiteness will be presented for the general problem and will be studied in two particular cases. Special emphasis will be given to the optimality principle since it allows one to des...

Network

Cited By

Projects

Projects (5)
Project
III. International Conference on Mathematics and its Applications in Science and Engineering will be organized by Technical University of Civil Engineering of Bucharest (Romania) during 4-7 July 2022. Please visit: https://icmase.com/
Project
The proposed project entails the development of an exoskeleton-like fixed bicycle for neuro degenerative diseases diagnosis, training and recovering patients as well as bone trauma physiotherapy. The ExoByke structure resembles a fixed bicycle with a number of actuator and wireless sensors, whose operation may be adapted to patient condition and pathology recovering demands. Using the Exobyke, the medical staff shall be able to provide the patients with individually adapted therapies such that effort and movements are applied considering a specific patient pathology. Moreover, stimulus that are closely related to reality are provided to patients through a virtual reality based solution while patient feedback is studied by sensor fusion with inertial sensors. Data is stored so that patient case analysis may be executed by medical staff at later time and convenience.
Archived project
The proposed project entails the development of an exoskeleton-like fixed bicycle for neuro degenerative diseases diagnosis, training and recovering patients as well as bone trauma physiotherapy. The ExoByke structure resembles a fixed bicycle with a number of actuator and wireless sensors, whose operation may be adapted to patient condition and pathology recovering demands. Using the Exobyke, the medical staff shall be able to provide the patients with individually adapted therapies such that effort and movements are applied considering a specific patient pathology. Moreover, stimulus that are closely related to reality are provided to patients through a virtual reality based solution while patient feedback is studied by sensor fusion with inertial sensors. Data is stored so that patient case analysis may be executed by medical staff at later time and convenience.