Browsing by Author "Rocha, Pedro"
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- An Application of Preference-Inspired Co-Evolutionary Algorithm to SectorizationPublication . Ozturk, E. Goksu; Rocha, Pedro; Sousa, Filipe; Lima, Maria Margarida; Rodrigues, Ana Maria; Soeiro Ferreira, José; Catarina Nunes, Ana; Lopes, Isabel Cristina; Oliveira, CristinaSectorization problems have significant challenges arising from the many objectives that must be optimised simultaneously. Several methods exist to deal with these many-objective optimisation problems, but each has its limitations. This paper analyses an application of Preference Inspired Co-Evolutionary Algorithms, with goal vectors (PICEA-g) to sectorization problems. The method is tested on instances of different size difficulty levels and various configurations for mutation rate and population number. The main purpose is to find the best configuration for PICEA-g to solve sectorization problems. Performancemetrics are used to evaluate these configurations regarding the solutions’ spread, convergence, and diversity in the solution space. Several test trials showed that big and medium-sized instances perform better with low mutation rates and large population sizes. The opposite is valid for the small size instances.
- Cold-Water Immersion Has No Effect on Muscle Stiffness After Exercise-Induced Muscle DamagePublication . Pinto, João; Rocha, Pedro; Torres, RuiObjective: To analyze the effect of cryotherapy on muscle stiffness after exercise-induced muscle damage. Design: A leg-to-leg comparison model. Setting: University research laboratory. Participants: Thirty (30) untrained men (21.1 ± 1.6 years, 177.6 ± 6.4 cm, 75.9 ± 10.0 kg, and 15.9 ± 2.9% fat mass) with no history of lower-limb injury and no experience in resistance training. Intervention: All participants underwent a plyometric exercise program to induce muscle damage; however, randomly, one leg was assigned to a treatment condition and subjected twice to cold-water immersion of the lower limb at 10°C (±1°C) for 10 minutes, while the other leg was assigned to control. Main Outcomes Measures: Longitudinal stiffness and passive transverse stiffness were evaluated on the soleus and gastrocnemius muscles at 4 moments: pre-exercise, immediately after exercise, 24 hours, and 72 hours after the damage protocol. Furthermore, pressure pain threshold (PPT) and maximal voluntary isometric contraction (MVIC) were also assessed in the same periods. Results: No significant differences between control and cryotherapy were observed in regard to MVIC (P = 0.529), passive longitudinal stiffness (P = 0.315), and passive transverse stiffness (P = 0.218). Only a significant decrease was observed in PPT on the soleus muscle in the cryotherapy compared with the control leg immediately after exercise (P = 0.040). Conclusions: The results show that cryotherapy had no influence on muscle stiffness. However, cryotherapy had a positive effect on PPT immediately after exercise.
- Creating homogeneous sectors: criteria and applications of sectorizationPublication . Lopes, Isabel Cristina; Lima, Maria Margarida; Ozturk, E. Goksu; Rodrigues, Ana Maria; Nunes, Ana Catarina; Oliveira, Cristina; Soeiro Ferreira, José; Rocha, PedroSectorization is the process of grouping a set of previously defined basic units (points or small areas) into a fixed number of sectors. Sectorization is also known in the literature as districting or territory design, and is usually performed to optimize one or more criteria regarding the geographic characteristics of the territory and the planning purposes of sectors. The most common criteria are equilibrium, compactness and contiguity, which can be measured in many ways. Sectorization is similar to clustering but with a different motivation. Both aggregate smaller units into groups. But, while clustering strives for inner similarity of data, sectorization aims at outer homogeneity [1]. In clustering, groups should be very different from each other, and similar points are classified in the same cluster. In sectorization, groups should be very similar to each other, and therefore very different points can be grouped in the same sector. We classify sectorization problems into four types: basic sectorization, sectorization with service centers, resectorization, and dynamic sectorization. A Decision Support System for Sectorization, D3S, is being developed to deal with these four types of problems. Multi-objective genetic algorithms were implemented in D3S using Python, and a user-friendly web interface was developed using Django. Several applications can be solved with D3S, such as political districting, sales territory design, delivery service zones, and assignment of fire stations and health services to the population.
- KeepingTrack: Helping dementia autonomyPublication . Sousa, Maria; Bastos, António; Rocha, Pedro; Bártolo, João; Peixoto, Sónia; Guimarães, Pedro; Marques, ArcelinaCurrently, the most developed countries are facing an increase in average life expectancy. This increase is mainly due to high technological advances in terms of techniques for preventing, diagnosing and treating diseases. In this way, more and more degenerative diseases will appear, including dementia. This disease affects memory, reasoning, judgment and learning capacity. Its carriers may, among other things, try to run away from home, lose their sense of direction and present changes in their personality leading to a state of mental confusion. In this way appears KeepingTrack, which, with a GPS pulse tracker and a camera capable of identifying when a patient leaves home, will allow the monitoring of patients diagnosed with this disease, ensuring their safety and assistance, without constant personal supervision by the caregiver, thus preserving the patient's daily autonomy. There are already several devices that serve this same purpose, but they present difficulties in terms of device portability, battery life and in maintaining an online history that is available for consultation.
- Livro de resumos do 9º Encontro Nacional de Engenharia e Gestão IndustrialPublication . Ávila, Paulo; Lopes, Manuel; Pinto Ferreira, Luís; Pereira, Teresa; Mota, Alzira; Rocha, Pedro; Azevedo, JulianaA 9ª edição do Encontro Nacional de Engenharia e Gestão Industrial foi realizada no Instituto Superior de Engenharia do Porto (ENEGI 2022). Este encontro foi coorganizado pelos alunos de Engenharia e Gestão Industrial e docentes dos cursos de Licenciatura e Mestrado de Engenharia e Gestão Industrial do Instituto Superior de Engenharia do Porto. Cientificamente foi apoiado pelos diretores de curso das licenciaturas, mestrados e programas doutorais, na área da Engenharia e Gestão Industrial, lecionados em Portugal. Este encontro visou dar resposta à vontade de partilha de conhecimento entre estudantes, docentes, investigadores e quadros de empresas de todo o país, que anualmente se reúnem para debater as diferentes áreas da Engenharia e Gestão industrial. O evento compreendeu da apresentação de trabalhos realizados por alunos dos cursos de Engenharia e Gestão Industrial, apresentação de empresas, sessões plenárias e debates em mesa-redonda. A comissão organizadora agradece a todos os conferencistas, aos moderadores das sessões, aos oradores principais, à comissão científica que procedeu à revisão dos resumos das comunicações, às empresas participantes, e ao suporte institucional da Presidência do Instituto Superior de Engenharia do Porto.
- Mobile application to support children with anxiety disordersPublication . Fonseca, Nuno; Almeida, Ana; Moreno, Maria; Simões De Almeida, Raquel; Faria, Luiz; Marques, António da Silva; Matos, Paulo; Rocha, Pedro; Martins, ConstantinoThis paper describes WEBECOOL, a hybrid web/mobile application with the purpose of improving the self-management of anxiety disorders. The development of WEBECOOL was driven by a multidisciplinary collaboration between computing engineers, psychologists and psychiatrics. The first stage of the web/mobile application test was performed to assess the satisfaction with the technological proposal. Also, several components were identified as crucial and were employed in WEBECOOL: stress management, problem solving, medication adherence, symptoms monitoring and social interaction. WEBECOOL also pretends to include caregivers in the process, with the purpose of implementing better help therapy strategies.