Santos-Pereira, Carla
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Santos-Pereira
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Carla
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Carla Santos Pereira
Biography
Carla Santos Pereira é Professora Auxiliar do Departamento Ciência e Tecnologia (DCT) da Universidade Portucalense (UPT), Doutorada em Matemática pelo Instituto Superior Técnico de Lisboa (IST), Mestre em Probabilidades e Estatística pela Faculdade de Ciências da Universidade de Lisboa (FCUL) e Licenciada em Estatística pela UPT. Atualmente é Presidente do Conselho Pedagógico da UPT e Coordenadora do Mestrado em Ciência de Dados. Tem vários anos de experiência na lecionação de variadas disciplinas nas áreas da Matemática e da Estatística em diversas Licenciaturas, Mestrados e Doutoramentos, na Universidade Portucalense, na FEUP e no ISEP. É investigadora do REMIT – Research on Economics, Management and Information Technologies, sendo autora de várias publicações científicas na área da Estatística Multivariada.
Afiliação:
Centro de Investigação: REMIT
Departamento: DCT
DD11-7CE2-337F
12794047600
G-9695-2016Research Projects
Organizational Units
REMIT – Research on Economics, Management and Information Technologies
Centro de investigação que que tem como objetivo principal produzir e disseminar conhecimento teórico e aplicado que possibilite uma maior compreensão das dinâmicas e tendências económicas, empresariais, territoriais e tecnológicas do mundo contemporâneo e dos seus efeitos socioeconómicos. O REMIT adota uma perspetiva multidisciplinar que integra vários domínios científicos: Economia e Gestão; Ciências e Tecnologia; Turismo, Património e Cultura.
Founded in 2017, REMIT – Research on Economics, Management and Information Technologies is a research unit of Portucalense University. Based on a multidisciplinary and interdisciplinary perspective it aims at responding to social challenges through a holistic approach involving a wide range of scientific fields such as Economics, Management, Science, Technology, Tourism, Heritage and Culture.
Grounded on the production of advanced scientific knowledge, REMIT has a special focus on its application to the resolution of real issues and challenges, having as strategic orientations:
- the understanding of local, national and international environment;
- the development of activities oriented to professional practice, namely in the business world.
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Publication Open Access O aparecimento de valores omissos no contexto da regressão logística.1996 - Santos-Pereira, CarlaUm dos problemas mais complexos na análise estatística de dados é o problema da ocorrência de valores omissos. Ele pode surgir em várias situações oriundas de diversos factores tais como o tipo de estudo realizado, o processo de amostragem utilizado e o objectivo do inquérito elaborado. Neste trabalho tenta-se alertar para esta situação mencionando-se algumas alterações que poderão ocorrer quando se procede ao ajustamento de um modelo de regressão logística. São ainda apresentadas algumas soluções nomeadamene pela aplicação de algumas técnicas a um exemplo no contexto da medicina.Publication Open Access Os fatores potenciadores da estratégia de internacionalização e o desempenho internacional das empresas portuguesas2019-11 - Durão, Natércia; Lobo, Carla Azevedo; Santos-Pereira, CarlaA remoção progressiva das barreiras ao comércio internacional abriu portas e criou oportunidades tanto para as grandes como para as pequenas empresas, não se restringindo apenas às empresas mais ousadas ou às especialmente vocacionadas para atividades externas. As modalidades de internacionalização também deixaram de ser apenas a tradicional exportação para um cliente distante ou a abertura de uma filial no exterior, para passarem a incorporar as mais variadas formas de internacionalização, desde o comércio intraempresa, investimentos cruzados entre empresas de diversos países e sobretudo variados tipos de acordos de cooperação em que participam empresas de diversas dimensões, empresas financeiras, governos, instituições supranacionais, entre outras. Pode acontecer, inclusive, que a internacionalização por parte de certa empresa se inicie não pela exportação de bens ou serviços, mas logo pela criação de uma unidade produtiva no exterior ou que simplesmente nasça já global, as chamadas born globals. A justificar algumas destas mudanças ocorridas nas últimas décadas estiveram algumas alterações que têm repercussões nas estratégias de internacionalização das empresas: o protagonismo adquirido pelas empresas de pequena e média dimensão que, através de métodos muito diversos, estendem a sua atividade além-fronteiras, mostrando que a atividade externa não é um exclusivo das grandes multinacionais; toda a evolução das tecnologias de informação e comunicação exerceu também um efeito muito positivo nesta nova era da internacionalização.Publication Open Access Método de classificação com rejeição por indecisão e observação atípicas.2004 - Pires, Ana M.; Santos-Pereira, CarlaNum problema típico de classificação, o objectivo é criar uma regra de decisão que permita afectar um objecto, de origem desconhecida, a uma de c classes pré-definidas, a partir dos valores observados de um conjunto de p variáveis numa amostra de treino. Na impossibilidade de separação absoluta ou numa situação de dúvida (quando as funções de decisão assumem valores muito idênticos ou a quando da existência de observações atípicas-outliers) poderá ser preferívelnão classificar do que optar por classificar com uma probabilidade de erro elevada. Nesse caso introduz-se uma opção de rejeição, por indecisão ou por existência de observações atípicas pelo que de uma forma genérica teremos um classificador em c + 2 classes. Neste trabalho apresenta-se um método de classificação em c + 2 classes com especial realce no tratamento das observações atípicas. Propõe-se uma nova regra de rejeição de outliers, RRO, baseada em análise de clusters e utilização de distâncias tipo Mahalanobis com estimadores clássicos e robustos que demonstrou ter bom comportamento em simulações de dados normais e não normais, com e sem outliers. Como método de clustering utilizaram-se o k-means, pam (partitioning around methods) e mclust (model based clustering) e para estimadores do vector de médias e de matriz de covariâncias o RMCD25 (Reweight Mininum Covariance Determinant com um ponto de rotura aproximado de 25%), os estimadores clássicos e o estimador OGK de Maronna e Zamar. O método apresentado é ilustrado com dois exemplos práticos.Publication Restricted Access Teaching and learning Modelling and Specification based on gamification2020-06 - Fonseco Escudero, David; Ferreira, Maria João; Durão, Natércia; Moreira, Fernando; Santos-Pereira, CarlaVideo games are understood by society, particularly young people, and young adults, as a form of entertainment. However, given the transformation of society towards the digital, in recent years the games have crossed the barriers of entertainment, and have been used in more ambitious environments and purposes, especially in business and education. In this context, this practice is called gamification, being used at education and aims to make the teaching and learning more attractive and motivating. Gamification, as noted, has the principles of video games, i.e., leverage the elements of the games, which underpin its enormous success, to make learning more engaging, customizable and relevant. Its use in the teachinglearning process has been carried out in parallel with active methodologies, and in the use of learning management systems that include various elements of the game to be integrated into teaching, learning and evaluation activities. In this paper, the gamified programmatic contents idea is presented, and it specifies a level-based programmatic contents structure as well as other gamification elements used, such as points and different types of rewards, the progress bar, the leaderboard, content locking and trading. The gamified programmatic contents will be implemented on the Moodle platform.Publication Open Access Mobile learning with gamification and augmented reality in portuguese high education2017 - Ferreira, Maria João; Durão, Natércia; Moreira, Fernando; Santos-Pereira, CarlaThe new technologies such as devices and mobile internet are becoming mainstream at a massive new scale. They are disrupting the ways organizations; namely higher education has operated for decades. Higher education schools must transform their teaching learning process and approaches to change how they engage with their students, innovate around new techniques and models and rethink how they operate. To lead in this digital era, higher education professors must use IT to enable students’ intimacy at a massive scale, establish high-value in and out of the school. The future is promising for higher education transforming and overcome in this era. In this context is critical to understand whether users (students and professors) are receptive and aware to adapt to this new trends before deciding to implement teaching-learning approaches on mobile technology. The aim of this study is to investigate the perception if the Portuguese Universities professors using Mobile Learning with gamification and augmented reality and if so how they can be used to promote student’s engagement inside and outside of the classroom.Publication Open Access Reflective teaching: Interpreting the results of pedagogical surveys at higher education2018 - Sá, S.; Costa-Lobo, Cristina; Santos-Pereira, Carla; Jesus-Silva, Natacha; Durão, NatérciaObtaining feedback from students is an essential requirement of reflective teaching, allowing teachers to refine their practice. In the scope of the student evaluation of teaching effectiveness at higher education, in this article they are analyzed the constituent axes and the results of satisfaction survey in a Portuguese private institution of higher education, with the purpose of measure teaching effectiveness. The quantitative study was based on pedagogical surveys, one survey for each curricular unit attended by students at one Portuguese private higher education institution. A performance evaluation of a set of 68 teachers was made, in a full-time working regime, by students. Teaching activity is evaluated according to nine items using a 7-level Likert scale, in which level 1 represents the lowest and the 7 the highest. The following characteristics were also included in the study: gender, department, years of service in the institution, professional category, academic degree, work area, number of courses taught and annual school service, in number of hours. In this work are presented the results of exploratory and inferential analysis of student’s answers to the survey applied in the year 2015-2016. Analyzes were made with the intention of verify if teacher's professional category, gender and years of service have influence on any of the items representatives of pedagogical skills. It is emphasized that whatever the semester, the professional category does not influence the pedagogical skills; gender and years of service of the teacher has no influence on the ability of the teacher to create conditions for the active participation of the students nor about the ability of the teacher to create a favorable climate for learning. This impact was evaluated for the two semesters in the 2015/2016 school year, using ANOVA one-way, MANOVA one-way and two-way parametric, correlation analysis-Pearson correlation and Reliability Analysis (Cronbach's Alpha). It is noteworthy, in the results, that the better the pedagogical skills, the better are their relationships with students. The results are discussed presenting contributions to the field of Institutional Management in Higher Education.Publication Open Access On optimal reject rules and ROC curves2005 - Pires, Ana M.; Santos-Pereira, CarlaIn this paper we make the connection between two approaches for supervised classification with a rejectio option. The first approach is due to Tortorella and is based on ROC curves and the second is a generalisation of Chow's optimal rules.Publication Open Access The importance of internationalization strategy for innovation in Portuguese firms2020-08 - Durão, Natércia; Santos-Pereira, Carla; Azevedo, Mónica; Maldonado, Isabel; Lobo, Carla AzevedoInnovation and internationalization seem to be vital strategies for the survival and growth of companies facing an increasingly competitive global environment. The twoway link between these two factors has become a topic of interest among researchers. Although innovation and internationalization are highly related activities, the role played by innovation in the internationalization process of firms has been analysed by internationalization, others consider that innovation can be a consequence of internationalization process. Given the great importance of small and medium-sized enterprises (SMEs) for the growth of economies, part of literature has paid special attention to this kind of enterprises. The aim of this study is to explore the relationship between innovation and internationalization within Portuguese firms, in particular to analyse whether Portuguese entrepreneurs consider innovation as an important factor in the process of internationalisation. To achieve this goals, we will use descriptive and inferential data analysis techniques.Publication Open Access A comparative study about mobile learning in Iberian Peninsula Universities: Are Professors Ready?2017 - Moreira, Fernando; Santos-Pereira, Carla; Ferreira, Maria João; Durão, NatérciaMobile technology is increasingly an element to be considered a paradigm that is changing in education in general, and in higher education in particular. In addition, computers and information technology have increased educational opportunities and have opened the way to new teaching/learning approaches. Due to this, several concepts from the e-learning, m-learning and u-learning appeared. Therefore, it is critical to understand whether users (students and professors) are receptive and aware to adapt to this new paradigm before deciding to implement teaching learning methods based on mobile technology. Thus, it is necessary to make a fundamental question “How do professors percept m-leaning?” In this context, the aim of this paper is to investigate the perception of higher education professors in Portugal and Spain (Iberian Peninsula) regarding the m-learning, and to identify the needs of professors as they relate to mobile technologies and how they can be used to promote student’s engagement inside and outside of the classroom. The main results obtained allow us to conclude that the majority of Iberian Peninsula professors have knowledge on how to perform the most trivial task with mobile devices and a high results about the utilization of both augmented reality and gamification applications.Publication Restricted Access Collaborative Learning supported by mobile devices: A case study in Portuguese High Education Institutions2016 - Ferreira, Maria João; Durão, Natércia; Moreira, Fernando; Santos-Pereira, CarlaCollaborative learning has been getting more importance in educational environment as one type of mobile learning application. In this learning environment there are a shift of learning approach, i.e. in a traditional approach the focus is on the teacher and in static and repetitive contents, oppositely with a collaborative learning the learn is centered in the students where they have a critical apprehension of contents that goes beyond the classroom, students could learning in different places. Learning supported by mobile technologies is becoming a new approach towards education, and it is single in the way that offers opportunities to learn anywhere and anytime. This paper introduces the foundations of collaborative learning supported by mobile technologies as well as presenting and analysing the evolution of collaborative learning supported by mobile devices in Portuguese (North region) Higher Education Institutions between 2009/2010 and 2014/2015.