Estilos e percepções dos alunos sobre ensino e aprendizagem da matemática

Admitimos que os estilos de aprendizagem dos alunos podem influenciar a sua percepção acerca dos aspectos essenciais para aprender e ensinar Matemática. Neste sentido, através da aplicação do questionário CHAEA, adaptado para língua portuguesa, identificamos os estilos preferenciais de aprendizagem de uma amostra de alunos do ensino superior, em função dos estilos: activo, reflexivo, teórico e pragmático. Através de um questionário construído para o efeito identificamos as percepções desses mesmos alunos relativamente aos aspectos que consideram essenciais para o ensino e aprendizagem da Matemática. Posteriormente relacionamos os estilos de aprendizagem dos alunos com as opiniões relativas aos aspectos considerados. Dos aspectos associados ao ensino e aprendizagem da Matemática, os alunos realçam: as qualidades pessoais do professor, as atitudes do professor, as estratégias, as atitudes dos alunos, o conhecimento relativo à Matemática e sua utilização

Open educational resources : higher education students’ knowledge and use

Information and communication technologies represent one of the main innovation factors within the teaching and learning process, especially in Higher Education. In this context, the search for building useful and grounded knowledge using strategies which meet students’ needs and interests requires the use of innovative resources, among which we highlight digital educational resources, particularly open educational resources (OER). The open educational resources issue has deserved the attention of teachers, students and institutions. Considering the present situation as well as the importance given to OER and to the role these may play in supporting learning, the aims of this paper are as follows: assess the digital educational resources features most valued by higher education students; verify the extent to which students’ IT knowledge influences their assessment of digital educational resources; identify the knowledge that higher education students have of OER; assess the knowledge that higher education students have of open educational resources platforms. In order to achieve the proposed aims, we focus our attention on open educational resources, starting by assessing digital educational resources’ features as well as the connection between students’ IT knowledge and that same assessment. We also assess the knowledge that higher education students have of OER as well as of their corresponding platforms. The data was obtained through a questionnaire conducted within a sample of 315 students at a Portuguese higher education institution. Among the results obtained, we highlight that the most valued features of digital educational resources are: free access; any time access; allows reuse; and free and open. The results show that there is a positive, low, or very low correlation between students’ IT knowledge and the features associated with digital educational resources. In addition to this, the results show an almost inexistent knowledge of the OER concept and of their uses as well as of the existing OER platforms. The data indicates that there is still a long way to go so that OER may be part of the resources used by students to improve their learning.CIEC – Research Centre on Child Studies, UM (FCT R&D 317

Appreciation of virtual learning environments by higher education teachers

Virtual learning environments have become more and more important in all levels of education, especially in Higher Education. With this paper we intend to identify the appreciation that a sample of university teachers made regarding the use of information and communication technologies (ICT) in their courses, the characteristics of digital resources associated with the Sakai environment and the availability of digital resources in that environment. Data were obtained using an online survey. The results obtained indicate that the most valued aspects of using ICT within the courses were the resources availability and access as well as time saving. The most valued characteristics of digital resources were their accessibility and easy use. With respect to resources availability, the most valued were the publishing of general information and of course-related digital resources

Local sclerotherapy with Polydocanol (Aethoxysklerol®) for the treatment of Epistaxis in Rendu-Osler-Weber or Hereditary Hemorrhagic Telangiectasia (HHT): 15 years of experience*

Producción CientíficaHereditary Haemorrhagic Telangiectasia or Rendu-Osler-Weber syndrome is a rare autosomal dominant vascular disease characterized by mucocutaneous and gastrointestinal telangiectases and localized arteriovenous malformations in lung, brain and liver. Epistaxis, due to rupture of telangiectases of the nasal mucosa, is the most frequent clinical manifestation, leading in many cases to severe impairment of the quality of life in the patients. Though several treatments have been used to reduce epistaxis, none have been completely effective, with the exception of polydocanol (Aethoxysklerol®) in submucosal or subpericondrial injections, which was first presented in 2000 with very good results. After fifteen years using polydocanol in submucosal injections on 45 patients and with nearly 300 injections, we have observed that in 95% of all cases, their nose bleeds improved with respect to frequency and quantity without any important side effects. There was just one case of septal perforation, another with increased septal perforation, and one patient who suffered from dizziness and blurred vision for a few minutes. In this paper the results obtained using this technique over a fifteen-year period will be presented and evaluated

A extensão popular e biocêntrica: vivências em formação universitária no Ceará e Rio Grande do Sul

This article is a summary of works and research being developed in Núcleo de Psicologia Comunitária– NUCOM (Community Psychology project - NUCOM) of the Federal University of Ceará and the Universityof Santa Cruz do Sul. It provides references that combine their methodologies. It discusses the questfor autonomy through community mobilization and biocentric education and that brings the debate of lifeas the center of the universe. It develops the relationship between extension and wisdom from studies inCommunitarian Psychology and about the Amerindian people, specifically the Guarani, problematizing themeaning of knowledge itself and its relation with extension, research and teaching in university studies. Forthe Guarani people learning is developed as a desire to know, which includes corporality, intuition, spiritualityand thinking in a collective organization purpose. Their view about knowledge is part of our culture andit is often left out because it does not represent the dominant economic and European knowledge, but itwith our practice of university education. The extension provides a full and transdisciplinary training, andis necessary as a human and professional education.Este artigo é uma síntese de trabalhos e pesquisas que vêm sendo desenvolvidos no Núcleo de Psicologia Comunitária da Universidade Federal do Ceará e na Universidade de Santa Cruz do Sul. São referências que combinam em suas metodologias a busca da autonomia através da mobilização comunitária e a educação popular e biocêntrica, que traz a discussão da Vida como centro do Universo. Desenvolvemos a relação entre extensão e sabedoria, a partir de estudos em Psicologia Comunitária com os povos ameríndios, especificamente os Guarani, problematizando o sentido de conhecimento e da própria extensão em sua relação com a pesquisa e o ensino na formação universitária. Para os povos Guarani a aprendizagem é desenvolvida como desejo de saber e inclui a corporeidade, a intuição, a espiritualidade e o pensamento dentro de um propósito coletivo de organização. Esta concepção sobre o conhecer é parte de nossa cultura, sendo muitas vezes deixada de lado por não representar o conhecimento europeu e econômico dominante, mas se encontra com as nossas práticas de formação universitária. A extensão possibilita uma formação integral e transdisciplinar, sendo necessária como formação humana e profissional

A percepção da sociologia das ausências na cadeia de suprimentos da indústria de máquinas agrícolas

Studies on supply chain management have been focused on competitiveness from the alignment of suppliers to the company’s main strategic interests, with the assumption that this alignment benefits all chains. In this approach, unmet interests of these suppliers are hidden when submitted to the subordination of the main company. This work aimed to understand how the supply chain of the agricultural machinery industry is managed, with the sociology of absences as a category of analysis. This is a descriptive and qualitative approach research, with the participation of six respondents, executives of companies providing implements for the three main agricultural machinery companies in the world. During the research, we sought to connect seven dimensions of supply chain management with the macro-sociological procedure of investigation of the sociology of absences. The results showed that the supply chain management of the agricultural machinery industry promotes the five non-logical existence (monocultures), putting smaller companies’ supply chain members in a situation of absence and concealment, disregarding their knowledge and interests.info:eu-repo/semantics/publishedVersio

Venous thromboembolism risk factors and practices of prophylaxis: ENDORSE study results in Portugal

BACKGROUND: Venous thromboembolism (VTE) risk assessment is a cornerstone for the achievement of best practices and outcomes. Epidemiologic data and practices related to venous thromboprophylaxis as considered by the global ENDORSE study, (Epidemiologic International Day for the Evaluation of Patients at Risk for Venous Thromboembolism in the Acute Hospital Care Setting), enrolled 68,183 patients from 32 countries, in which Portugal. Within ENDORSE, data from all participant countries analyzed to determine their risk of VTE and to evaluate the suitability of prophylaxis. METHODS: European patients were enrolled from randomly selected hospitals in Portugal (European Hospital Register), according to ENDORSE study inclusion/exclusion criteria. The Seventh ACCP evidence-based consensus guidelines were employed to evaluate VTE risk and prophylaxis use. RESULTS: From a total of 3,145 beds assessed, 2,183 were considered eligible and 1,632 met all criteria. Of these, 860 (52.7%; 95% CI 50.3-55.1) were at risk of VTE: 525 surgical patients (68.9%; 95% CI 65.5-72.1) and 335 medical patients (38.5%; 95% CI 35.3-41.2). The rate of prophylaxis according to ACCP guidelines in overall patients at risk was 58.5% (503 patients). The prophylaxis rate for VTE was 59% (310 patients) in surgical patients and 57.6% (n = 193) in medical patients. 39.7% of surgical patients and 39.4 % of medical patients who did not meet the criteria for prophylaxis were also on prophylaxis with an anticoagulant, which was considered to be inappropriate. CONCLUSIONS: More than a half of these hospitalized patients in Portugal were deemed at risk of VTE and less than two-thirds of them received appropriate prophylaxis. New strategies are required for implementation of venous thromboprophylaxis in Portuguese hospitals

Microalgal systems for wastewater treatment: technological trends and challenges towards waste recovery

Wastewater (WW) treatment using microalgae has become a growing trend due the economic and environmental benefits of the process. As microalgae need CO2, nitrogen, and phosphorus to grow, they remove these potential pollutants from wastewaters, making them able to replace energetically expensive treatment steps in conventional WW treatment. Unlike traditional sludge, biomass can be used to produce biofuels, biofertilizers, high value chemicals, and even next-generation growth media for “organically” grown microalgal biomass targeting zero-waste policies and contributing to a more sustainable circular bioeconomy. The main challenge in this technology is the techno-economic feasibility of the system. Alternatives such as the isolation of novel strains, the use of native consortia, and the design of new bioreactors have been studied to overcome this and aid the scale-up of microalgal systems. This review focuses on the treatment of urban, industrial, and agricultural wastewaters by microalgae and their ability to not only remove, but also promote the reuse, of those pollutants. Opportunities and future prospects are discussed, including the upgrading of the produced biomass into valuable compounds, mainly biofuels.This research was funded by the Foundation for Science and Technology (FCT) through UIDB/04326/2020 and the GreenTreat (PTDC/BTA-BTA/31567/2017) and Red CYTED P319RT0025— RENUWAL—Red Iberoamericana para el Tratamiento de Efluentes con Microalgas projects and CRESC-Algarve and the European Regional Development Fund (ERDF) programs via the ALGAVALOR (ALG-01-0247-FEDER-035234) project.info:eu-repo/semantics/publishedVersio

Aggressive Neuroblastoma in a Pediatric Patient with Severe Hemophilia A

Despite the extensive information regarding hemophilia's hemorrhagic complications, the literature on cancer in hemophilia is scarce, especially in pediatric patients. Many uncertainties remain concerning diagnosis and workup. We report a rare case of two severe diseases (neuroblastoma and hemophilia A (HA)) concomitantly present in the same pediatric patient. We highlight that the diagnosis of severe HA did not have a negative impact on the patient's oncologic course. This case also illustrates the significance of the cooperation among different specialties and hospitals when caring for the same patient.info:eu-repo/semantics/publishedVersio

Green chemistry and biorefineries: common future?

Green Chemistry and Biorefinery concepts are two approaches helping to develop new and more sustainable processes.The implementation of both methodologies impels to fossil-independent future with bioeconomy based on natural feedstock like biowaste and industrial by-products. The development of technologies for valorisation of these resources is a key role of society in the creation of sustainable and more environmentally friendly future. Shortly after the Rio Declaration on Environment and Development, Anastas and Warner presented 12 Principles of Green Chemistry but more a decade before Trevor Kletz in his Jubilee lecture entitled “What you don’t have, can’t leak” draw the frames in which scientific and industrial work should be performed. This basis of green chemistry created a fundament for further development and implementation of Anastas and Warner principles of green chemistry. One of these frames is integration of green chemistry principles in the biorefinery concept. The biorefinery is an industrial facility (or network of facilities) that cover an extensive range of combined technologies aiming to full sustainable transformation of biomass into their building blocks with the concomitant production of biofuels, energy, chemicals and materials, preferably of value added products. One of the principles of green chemistry is the use of more sustainable solvents. Some examples of them are ionic liquids (ILs) and supercritical fluids (scF). This work will demonstrate the successful examples of lignocellulosic biomass valorisation using green solvents answering the question regarding the feasibility of future biorefineries made in a greener manner